The Hierarchy of Legal Norms in France: Constitutional Supremacy, International Treaties, European Union Law, and National Legislation

The Hierarchy of Legal Norms in France: Constitutional Supremacy, International Treaties, European Union Law, and National Legislation

Introduction

The French legal system is founded on the principle that legal rules do not all possess the same authority. They form an organised structure in which certain norms establish the conditions under which others may be adopted, interpreted, and applied. A statute must comply with the Constitution; an administrative regulation must respect the legislation and constitutional rules governing its adoption; and public authorities must exercise their powers within the limits imposed by superior legal norms.

This arrangement is commonly described as the hierarchy of legal norms (hiérarchie des normes). It is fundamental to the rule of law because it prevents public authorities from exercising unlimited power and provides a legal framework for resolving conflicts between different sources of law.

In France, the hierarchy is particularly interesting because it involves several overlapping legal orders. At the national level, the Constitution of 4 October 1958 occupies the highest position. It establishes the institutions of the Republic, defines their powers, protects fundamental rights, and determines the legal conditions under which international commitments may become part of the domestic legal order.

International treaties occupy a position superior to ordinary legislation under Article 55 of the Constitution, provided the applicable constitutional conditions are satisfied. European Union law has an additional and distinctive status: the French Constitution recognises France’s participation in the Union, while the Court of Justice of the European Union maintains that EU law must take precedence over conflicting national rules within the scope of EU competence. This relationship has required sustained dialogue between French courts and European institutions.

The result cannot be adequately explained by drawing a simple pyramid in which every legal source has an unambiguous position in relation to every other source. The Constitution is supreme within the French domestic legal order, treaties generally prevail over statutes, and EU law enjoys primacy within its own legal order. These principles must be understood together, rather than treated as interchangeable statements.

This article examines the constitutional foundations of the hierarchy of norms, the position of international treaties, the special status of European Union law, the relationship between legislation and regulations, and the judicial mechanisms through which conflicting legal rules are reviewed. It also explains why the hierarchy of norms is not merely an abstract theoretical concept but a practical foundation of French constitutional government.

1. The Concept of the Hierarchy of Legal Norms

The hierarchy of legal norms is the principle that legal rules possess different levels of authority and that lower-ranking rules must comply with the requirements established by higher-ranking rules.

A legal system cannot function coherently if every public authority is free to adopt rules without regard to the rules governing its own powers. Parliament must act within the Constitution; the Government must respect both the Constitution and legislation; and administrative authorities must exercise their powers in accordance with the applicable legal framework.

The hierarchy therefore performs several essential functions.

First, it establishes the legal limits of public authority. A government decree cannot lawfully override a statute, and a statute cannot validly disregard constitutional requirements. Each public institution must act within the legal authority assigned to it.

Second, it protects legal certainty. Individuals and organisations need to know which rules apply and which legal instruments take precedence when provisions conflict.

Third, it supports the protection of fundamental rights. Constitutional provisions, international human rights instruments, and applicable European Union guarantees impose limits on the exercise of public power.

Fourth, it provides a framework for judicial review. Courts and other competent institutions can examine whether a legal rule complies with superior norms and determine the legal consequences of incompatibility.

The French Ministry of Justice describes the principal sources of law as the Constitution, international treaties, European law, statutes, regulations, and jurisprudence, organised according to their legal authority. Ministère de la justice+1

1.1. The influence of the theory of legal hierarchy

The modern understanding of legal hierarchy is frequently associated with the work of Austrian jurist Hans Kelsen, whose theory of the legal order described law as a structured system of norms deriving their validity from higher-ranking norms.

In simplified terms, a legal rule is valid because it has been adopted in accordance with a rule that authorises its creation. A ministerial order, for example, must be based on a lawful regulatory power; a regulation must respect the statute under which it is adopted; and legislation must comply with the constitutional framework.

This theoretical approach is useful for understanding French law, although the practical operation of the French system is more complex than a purely linear hierarchy suggests. International law and European Union law have their own principles of authority, while the French Constitution establishes the conditions under which these external legal commitments operate domestically.

The hierarchy of norms is therefore both a national constitutional principle and a framework for managing relationships between different legal orders.

1.2. A simplified overview of the French hierarchy

Within the domestic legal order, the principal structure can be represented as follows:

1. Constitution and constitutional block

Constitution of 1958, Declaration of 1789, Preamble of 1946, Environmental Charter, and recognised constitutional principles

2. International treaties and European Union law

Treaties under Article 55; EU primary and secondary law under the Union’s legal order and the French Constitution

3. National legislation

Organic laws, ordinary statutes, and legislative ordinances

4. Regulations

Decrees, ministerial orders, prefectural orders, and municipal orders

5. Individual administrative decisions and implementing acts

Permits, appointments, administrative authorisations, and other individual measures

Simplified domestic overview. The relationship between EU law, international law, and the Constitution requires separate analysis and cannot be reduced to a single universally accepted ranking across legal orders.

This representation is useful as an introduction, but it should not be interpreted as suggesting that international treaties and EU law are identical or that every treaty has the same legal effect. Their position depends on the relevant constitutional provisions, the nature of the instrument, and the legal order in which a conflict arises.

2. The Constitution as the Supreme Norm in the French Domestic Legal Order

The Constitution of 4 October 1958 is the highest-ranking source of law within the French domestic legal order. It establishes the institutional structure of the Fifth Republic, distributes powers between public authorities, and recognises fundamental rights and constitutional principles.

Its supremacy means that legislation, regulations, and administrative acts must comply with the constitutional framework.

2.1. The Constitution and the constitutional block

The French Constitution cannot be understood solely by reading the articles of the 1958 constitutional text. Its constitutional authority extends to a collection of documents and principles commonly described as the bloc de constitutionnalité, or constitutional block.

The constitutional block includes:

• The Constitution of 4 October 1958.
• The Declaration of the Rights of Man and of the Citizen of 1789.
• The Preamble to the Constitution of 1946.
• The Charter for the Environment of 2004.
• Fundamental principles recognised by the laws of the Republic (principes fondamentaux reconnus par les lois de la République).
• Other principles and objectives that the Constitutional Council has recognised as having constitutional value.

The constitutional status of the Declaration of 1789 and the Preamble of 1946 became particularly significant through the Constitutional Council’s decision of 16 July 1971, Liberté d’association. That decision established the importance of constitutional review of legislation by reference to principles found beyond the operative articles of the 1958 Constitution.

The Charter for the Environment, adopted constitutionally in 2005, further expanded the range of rights and principles protected at constitutional level.

Consequently, the constitutional review of legislation may concern freedom of association, equality, freedom of expression, property rights, the rights of defence, environmental protection, and other constitutional guarantees.

The constitutional block is therefore the substantive standard against which the conformity of legislation with the Constitution is assessed.

2.2. Constitutional supremacy and Article 54

Article 54 of the Constitution addresses the relationship between international commitments and the constitutional order.

It provides that where the Constitutional Council, following a referral by an authorised constitutional authority, declares that an international commitment contains a clause contrary to the Constitution, authorisation to ratify or approve that commitment may take place only after the Constitution has been revised.

This provision is particularly important because it establishes a constitutional safeguard before France undertakes an international obligation that would conflict with its constitutional framework.

The mechanism is preventive. Rather than allowing an international commitment to enter into force domestically while contradicting the Constitution, Article 54 requires the constitutional difficulty to be resolved first.

The procedure has played an important role in France’s relationship with European integration. Constitutional revisions have been adopted on several occasions to permit the ratification of European treaties and accommodate the development of the European Union.

Article 54 therefore demonstrates that international commitments do not automatically displace the French Constitution within the domestic legal order. The Constitution determines the conditions under which France may undertake those commitments. Conseil d’État+1

2.3. Constitutional review of legislation

The Constitutional Council (Conseil constitutionnel) is the principal institution responsible for reviewing the constitutionality of legislation.

Under Article 61, certain categories of legislation, particularly organic laws and parliamentary rules of procedure, are subject to mandatory review before promulgation or entry into force. Ordinary statutes may also be referred to the Council by the President of the Republic, the Prime Minister, the presidents of the two parliamentary assemblies, or sixty deputies or sixty senators.

The Council examines whether the legislation complies with the Constitution and the constitutional block.

The 2008 constitutional reform introduced a further mechanism: the question prioritaire de constitutionnalité (QPC), which entered into force in 2010. Under Article 61-1, a party to judicial proceedings may argue that a legislative provision applicable to the case infringes rights and freedoms guaranteed by the Constitution.

The question is not submitted directly to the Constitutional Council by the litigant. It passes through the competent supreme court: the Conseil d’État for administrative proceedings or the Cour de cassation for judicial proceedings. If the statutory conditions are satisfied, the question is referred to the Constitutional Council.

If a provision is declared unconstitutional, Article 62 provides for its repeal, either from the date of publication of the decision or from a later date determined by the Council. The Council may also establish conditions governing the effects of the repeal.

This system ensures that the Constitution remains a practical standard governing legislation, including provisions that have been in force for many years.

The distinction between constitutional review and review of compatibility with international treaties is important. The Constitutional Council is not generally the institution responsible for deciding whether an ordinary statute complies with an international treaty; that task belongs principally to the ordinary and administrative courts, as discussed below. Sénat+1

3. International Treaties in the French Legal Order

International treaties occupy a special position in French law. They are agreements concluded between states or between states and international organisations, creating legal obligations governed by international law.

Treaties may concern human rights, trade, diplomatic relations, environmental protection, criminal cooperation, investment, taxation, or many other matters. Their significance for the French legal system arises from the fact that they may create obligations that national authorities and courts must respect.

The Constitution of 1958 recognises the domestic authority of international commitments, particularly through Articles 52 to 55.

3.1. Article 55: The superiority of treaties over statutes

Article 55 provides that treaties or agreements duly ratified or approved have, upon publication, authority superior to that of statutes, subject to the condition that the agreement is applied by the other party.

This provision establishes an important principle: a valid international treaty may prevail over an ordinary French statute, including a statute adopted after the treaty.

The rule is significant because it means that Parliament is not entirely free to adopt legislation inconsistent with France’s international obligations. Where the conditions of Article 55 are satisfied, domestic legislation must be applied consistently with the relevant treaty.

For example, if a French statute conflicts with an applicable provision of the European Convention on Human Rights, a French court may be required to give effect to the treaty obligation rather than apply the incompatible statutory provision.

The legal effect is not necessarily the invalidation of the statute. Rather, the court may refuse to apply the conflicting provision in the case before it. The statute remains formally part of French legislation unless it is repealed or otherwise removed through the appropriate constitutional or legislative process.

Article 55 is therefore a rule concerning the authority and application of international commitments within the domestic legal order. Légifrance+1

3.2. Conditions for the domestic authority of treaties

The superiority recognised by Article 55 is subject to legal conditions. A treaty does not automatically acquire superior authority over statutes merely because France has signed it.

The principal requirements include the following.

First, the treaty must have been duly ratified or approved. The Constitution distributes authority concerning international commitments between the President of the Republic, the Government, and Parliament. Article 52 provides that the President negotiates and ratifies treaties, while the Government is informed of negotiations concerning international agreements that are not subject to ratification. Certain categories of treaties require parliamentary authorisation under Article 53.

Second, the treaty must have been published. Publication makes the international commitment accessible and allows it to be invoked within the domestic legal order where the other requirements are met.

Third, the condition of reciprocity may apply. Article 55 refers to the application of the treaty by the other party. This reflects the traditional requirement that the other contracting party must also fulfil its obligations. However, reciprocity is not applied identically to all categories of international instruments. In particular, the European Convention on Human Rights and treaties establishing individual human-rights guarantees cannot be treated as ordinary reciprocal exchanges of obligations between states. The specific nature of the instrument and the applicable jurisprudence must be considered.

Fourth, the provision relied upon must be capable of producing the relevant legal effect. Not every treaty provision can necessarily be invoked directly by an individual before a French court. Some provisions establish obligations between states and require further legislative or administrative implementation. Others may confer rights or impose sufficiently clear obligations that can be relied upon in domestic proceedings.

These conditions explain why the domestic application of international law requires more than identifying a treaty to which France is a party.

3.3. The distinction between signature, ratification, approval, and publication

International agreements generally pass through several stages before they acquire their full legal effect.

• Signature authenticates the negotiated text and may create obligations under international law, including the obligation not to defeat the treaty’s object and purpose in circumstances recognised by international law. Signature does not necessarily mean that the treaty is already binding in full.
• Ratification is the formal act through which a state expresses its consent to be bound by a treaty where ratification is required.
• Approval is another recognised method of expressing consent to be bound, used according to the nature of the agreement and the applicable constitutional procedure.
• Publication makes the treaty officially accessible within the domestic legal order and is a condition expressly mentioned in Article 55.

Article 53 is particularly important because it identifies categories of international commitments that cannot be ratified or approved without parliamentary authorisation. These include treaties and agreements concerning peace, commerce, international organisations, state finances, matters governed by legislation, civil status, and certain territorial arrangements.

The constitutional framework therefore combines executive responsibility for international relations with parliamentary involvement in commitments that affect important areas of national law.

3.4. Direct effect of treaty provisions

An important question is whether an individual can rely directly on a treaty provision before a French court.

The answer depends on the nature and wording of the provision, its purpose, and the legal framework governing the treaty.

A provision may be directly invocable where it is sufficiently clear and precise and does not require further implementing measures to produce the relevant legal effect. A provision addressed primarily to states, requiring legislative or administrative action, may not confer an immediately enforceable individual right.

The Conseil d’État has developed a substantial body of jurisprudence concerning the direct effect of international treaty provisions. Its decision in GISTI et FAPIL of 11 April 2012 is particularly important. The court clarified the approach to determining whether a treaty provision can be invoked by individuals, focusing on the intention of the parties, the general structure of the treaty, and the content of the provision.

This distinction matters in practice. A treaty may be binding on France at the international level without every one of its provisions being directly enforceable by an individual in domestic litigation.

3.5. International human-rights treaties

International human-rights instruments are particularly significant in the French legal order because they provide additional protection for individual rights and freedoms.

The most important example is the European Convention on Human Rights, adopted within the Council of Europe in 1950. It protects rights including the right to life, the prohibition of torture, the right to liberty and security, the right to a fair trial, freedom of expression, freedom of religion, and respect for private and family life.

The Convention is not an instrument of the European Union. It belongs to the separate legal framework of the Council of Europe, an international organisation distinct from the EU.

France is also bound by other international human-rights instruments, including the International Covenant on Civil and Political Rights and the Convention on the Rights of the Child.

These treaties may influence the interpretation and application of French legislation. They are particularly important in criminal proceedings, immigration matters, family law, administrative decisions, freedom of expression, and the protection of vulnerable individuals.

A person who considers that their rights under the European Convention on Human Rights have been violated may, after satisfying the admissibility requirements and exhausting effective domestic remedies, bring an application before the European Court of Human Rights in Strasbourg.

The Court’s judgments are binding on the state concerned under the Convention. They do not operate as ordinary domestic statutes, but they impose international obligations and may require legislative, administrative, or judicial measures to address violations.

The Convention thus forms a significant part of the legal environment within which French authorities and courts operate.

4. The Relationship Between the Constitution and International Treaties

The fact that treaties prevail over statutes does not mean that they prevail over the French Constitution.

French constitutional jurisprudence has consistently maintained that the Constitution remains the supreme norm within the domestic legal order. The relationship is therefore different at each level: treaties generally prevail over ordinary legislation, but the Constitution retains its superior position in domestic law.

4.1. The Sarran et Levacher decision of 1998

One of the most important decisions on this subject was delivered by the Conseil d’État on 30 October 1998 in Sarran et Levacher.

The dispute concerned provisions of the Constitution and their relationship with international commitments. The Conseil d’État reaffirmed that the superiority granted to treaties by Article 55 does not extend to the Constitution itself.

The decision established a fundamental distinction:

• Treaties have authority superior to statutes under Article 55.
• The Constitution remains superior to treaties within the French domestic legal order.

The Cour de cassation adopted a similar position in its judgment of 2 June 2000, Fraisse.

These decisions are central to understanding the French constitutional approach to international law. They establish that France may undertake international obligations, but those obligations do not automatically displace the Constitution as the supreme domestic norm. Conseil d’État+1

4.2. The practical significance of Article 54

Article 54 provides a mechanism for resolving potential conflicts before an international commitment is ratified or approved.

If the Constitutional Council determines that a treaty contains a provision contrary to the Constitution, the treaty cannot be ratified or approved unless the Constitution is first amended.

This mechanism is particularly relevant where international agreements require changes to the distribution of public powers, the functioning of national institutions, or the protection of constitutional principles.

The procedure demonstrates that constitutional supremacy is not necessarily an obstacle to international cooperation. Rather, the Constitution provides a formal mechanism through which France may decide whether and how to accommodate new international commitments.

4.3. Constitutional supremacy and international responsibility

The supremacy of the Constitution within the domestic legal order does not eliminate France’s international obligations.

If a state fails to comply with a treaty, it may incur international responsibility even if the national authorities consider that the relevant domestic rule has constitutional status.

This distinction is important. Domestic constitutional hierarchy determines how French institutions understand and apply national law. International law determines the obligations France has undertaken towards other states or international organisations.

A state generally cannot rely on its internal law as a justification for failing to perform an international treaty obligation. The principles of international responsibility operate independently of the domestic ranking of legal norms.

Consequently, a constitutional conflict may create a difficult legal and political situation: a domestic authority may be required to respect the Constitution while France remains internationally bound by an obligation that creates tension with it.

The constitutional procedure under Article 54 seeks to prevent such conflicts from arising at the point of ratification. It cannot, however, eliminate every possible tension between domestic constitutional law and international commitments.

5. European Union Law: A Distinct Legal Order

European Union law occupies a distinctive position in the French legal system. Although it is international in origin, it has developed into an autonomous legal order with its own institutions, sources, judicial system, and principles of application.

France is a founding member of the European integration project and participates in the EU under the constitutional framework established by Title XV of the Constitution of 1958.

The relationship between French law and EU law is therefore more complex than the ordinary relationship between domestic statutes and international treaties.

5.1. Article 88-1 of the French Constitution

Article 88-1 provides the constitutional foundation for France’s participation in the European Union. It recognises that the Republic participates in the EU, composed of states that have chosen freely to exercise certain of their competences in common under the Treaty on European Union and the Treaty on the Functioning of the European Union.

The provision reflects the constitutional recognition of European integration and provides the basis for important obligations arising from EU membership.

One particularly significant consequence is the constitutional requirement to transpose EU directives into national law. The Constitutional Council has recognised that the transposition of directives is a constitutional requirement resulting from Article 88-1, subject to the limits associated with constitutional identity.

Article 88-1 does not simply repeat Article 55. It provides a specific constitutional basis for participation in a legal order whose institutions exercise powers conferred by the Member States under the EU treaties.

5.2. The hierarchy of norms within the European Union

EU law has its own internal hierarchy.

At the highest level is primary EU law, which includes:

• The Treaty on European Union.
• The Treaty on the Functioning of the European Union.
• Protocols attached to the treaties.
• The Charter of Fundamental Rights of the European Union, which has the same legal value as the treaties under Article 6 of the Treaty on European Union.
• General principles of EU law recognised by the Court of Justice of the European Union.

Below primary law is secondary EU law, adopted by the institutions of the Union within their competences.

The principal forms of secondary legislation include regulations, directives, and decisions. These instruments have different legal characteristics and effects.

The distinction between primary and secondary law is important because EU institutions must exercise their powers within the limits established by the treaties. A regulation or directive cannot lawfully contradict the primary law on which the Union’s legal authority is based.

EUR-Lex, the official EU legal information portal, explains this structure and distinguishes primary law from secondary legislation, delegated acts, and implementing acts. EUR-Lex+1

5.3. Regulations

An EU regulation is a binding legal act of general application. Under Article 288 of the Treaty on the Functioning of the European Union, a regulation is binding in its entirety and directly applicable in all Member States.

Direct applicability means that a regulation does not generally require national transposition legislation in order to become part of the applicable legal framework.

For example, an EU regulation concerning data protection, product standards, or financial regulation may apply directly in France once it enters into force, subject to its provisions and any implementation measures it requires.

National authorities and courts must apply the relevant regulation within its scope. French legislation may provide supplementary rules where the EU instrument permits or requires them, but national measures cannot contradict the regulation.

The directly applicable character of regulations is one of the most visible ways in which EU law affects national legal systems.

5.4. Directives

An EU directive is different. Under Article 288 TFEU, it is binding upon each Member State to which it is addressed as to the result to be achieved, while leaving national authorities the choice of form and methods.

Directives therefore generally require transposition into domestic law.

France may implement a directive through legislation, regulations, or a combination of both, depending on the subject and the constitutional distribution of national powers.

For example, a directive concerning employment conditions may require amendments to the Labour Code, while a directive dealing with consumer protection may require changes to the Consumer Code and related regulations.

The obligation to transpose directives is particularly significant in France because Article 88-1 gives this obligation constitutional recognition.

However, the absence of correct transposition does not mean that every directive provision automatically operates in the same manner as a regulation. Under the jurisprudence of the Court of Justice, sufficiently clear, precise, and unconditional provisions of a directive may, after the transposition deadline has expired, be invoked vertically against the state or an emanation of the state, subject to the applicable conditions. Directives do not, as a general rule, have horizontal direct effect enabling an individual to impose an untransposed directive provision directly against another private individual.

National courts must also interpret domestic law, so far as possible, consistently with the wording and purpose of applicable directives.

5.5. Decisions and other EU legal acts

EU decisions are binding in their entirety. Where they specify addressees, they are binding only on those addressees.

They may concern particular Member States, companies, individuals, or other legal entities. Their legal effects depend on their content and the persons or institutions to which they are addressed.

The EU institutions also adopt delegated acts and implementing acts. These are non-legislative instruments that operate within the framework established by the relevant legislative acts and the EU treaties.

The resulting structure is a legal order in which different instruments possess different legal effects. National authorities must identify the type of EU act involved before determining how it applies in France.

6. The Primacy of European Union Law

One of the most important principles of EU law is the principle of primacy, sometimes called supremacy. It means that where a rule of EU law applies and conflicts with a rule of national law, the EU rule must take precedence in the circumstances governed by EU law.

The principle was developed through the jurisprudence of the Court of Justice of the European Union (CJEU). It is essential to the uniform application of EU law across the Member States.

6.1. The development of primacy in European jurisprudence

Two early decisions are particularly important.

In Van Gend en Loos v Nederlandse Administratie der Belastingen (Case 26/62, 1963), the Court of Justice established that certain provisions of the European Community legal order could confer rights directly on individuals, which national courts were required to protect.

In Costa v ENEL (Case 6/64, 1964), the Court developed the principle that Community law could not be overridden by conflicting national legislation without undermining the legal order created by the European treaties.

The Court’s reasoning was based on the distinctive nature of the European legal system. Member States had transferred or pooled the exercise of certain competences through the treaties, creating obligations that could not be neutralised unilaterally through later domestic legislation.

The principle was subsequently reinforced in Simmenthal (Case 106/77, 1978), where the Court held that national courts must give full effect to applicable Community law and set aside conflicting national provisions, whether adopted before or after the relevant EU rule.

The principle is now a fundamental element of the EU legal order. It is reflected in the Declaration concerning primacy annexed to the Lisbon Treaty and in the consistent jurisprudence of the CJEU.

6.2. Primacy and direct effect are different principles

Primacy and direct effect are closely related, but they are not identical.

Primacy concerns the priority of EU law when a conflict arises with national law.

Direct effect concerns whether a particular EU provision can be relied upon by an individual before a national court without the need for further implementing measures.

A rule may be binding on France under EU law but may not necessarily be directly invocable by an individual in every type of proceeding. The legal effect depends on the instrument and the wording of the provision.

For example, a regulation is directly applicable under Article 288 TFEU, but whether a particular provision can be invoked in litigation depends on whether it is sufficiently clear, precise, and unconditional.

A directive is binding as to the result to be achieved, but it generally requires transposition. Under the conditions established by EU jurisprudence, certain provisions may nevertheless be relied upon vertically after the transposition deadline has expired.

This distinction is important for understanding how EU law operates in French courts. Primacy does not mean that every EU instrument automatically creates an enforceable individual right in every dispute.

6.3. The position of French courts

French courts have gradually incorporated the principle of primacy into domestic jurisprudence.

The Cour de cassation accepted the priority of international and European commitments over conflicting statutes in its 1975 decision Administration des douanes v Société des cafés Jacques Vabre. The Conseil d’État later adopted a similar approach in its 1989 decision Nicolo.

These decisions were important because they established that French courts could review the compatibility of statutes with international and European commitments, including where the statute had been adopted after the relevant treaty.

The decisions also helped distinguish the role of constitutional review from the review of compatibility with international and European obligations.

Today, French administrative and judicial courts must apply EU law within its field of application, taking account of the jurisprudence of the CJEU. Where necessary, they may refer questions of interpretation or validity to the Court of Justice under Article 267 TFEU.

6.4. The role of the Court of Justice of the European Union

The CJEU plays a central role in ensuring the uniform interpretation and application of EU law.

National courts are responsible for applying EU rules in individual cases, but they may encounter questions concerning the meaning or validity of an EU provision.

Under Article 267 TFEU, national courts may refer questions to the CJEU for a preliminary ruling. Courts against whose decisions there is no judicial remedy under national law are, subject to the conditions developed in the Court’s jurisprudence, generally required to make a reference where a necessary question of EU law arises and the relevant exceptions do not apply.

The preliminary-ruling procedure does not transfer the entire national dispute to the CJEU. The Court interprets EU law or rules on the validity of an EU act, while the national court applies that interpretation to the facts and resolves the proceedings.

This judicial dialogue is especially important in France, where the Conseil d’État and Cour de cassation regularly engage with EU law and the jurisprudence of the CJEU.

7. Reconciling EU Primacy with the Supremacy of the French Constitution

The relationship between EU law and the French Constitution is one of the most complex aspects of the hierarchy of norms.

From the perspective of EU law, the primacy principle applies to national law, including national constitutional rules, within the scope of EU law. From the perspective of French constitutional law, however, the Constitution remains the supreme norm within the domestic legal order.

French institutions have sought to reconcile these positions through constitutional provisions, judicial interpretation, and the concept of constitutional identity.

7.1. The constitutional recognition of European integration

Article 88-1 is central to this relationship. By recognising France’s participation in the European Union, it provides a constitutional foundation for the exercise of certain national competences through EU institutions.

This constitutional recognition distinguishes EU law from ordinary international agreements. France is not simply implementing a series of separate treaty obligations; it participates in a legal order with institutions capable of adopting binding acts that apply across Member States.

The Constitutional Council has relied on Article 88-1 in recognising the constitutional requirement to transpose directives. In its decision of 10 June 2004 concerning the Law on Confidence in the Digital Economy, it recognised that transposition of directives into domestic law is a constitutional requirement.

The Council has also developed the idea that constitutional review of legislation implementing EU law must take account of the special position of EU obligations.

7.2. Constitutional identity

The French constitutional approach includes the concept of identité constitutionnelle de la France, or constitutional identity of France.

In certain circumstances, the Constitutional Council has indicated that it will protect principles inherent in French constitutional identity when examining legislation implementing EU obligations.

This approach seeks to reconcile the constitutional requirement to implement EU law with the preservation of fundamental constitutional principles that are specific to the French constitutional order.

The concept should not be understood as a general permission to disregard EU law whenever a national authority considers a domestic rule important. It is a narrowly framed constitutional safeguard, developed through jurisprudence and connected to the specific constitutional responsibilities of national institutions.

The Constitutional Council’s decisions of 10 June 2004 and 27 July 2006 are important in this development. In 2021, the Council applied the concept in its decision concerning the protection of personal data and the prevention of serious public-order offences, identifying a principle inherent in the constitutional identity of France relating to the prohibition of delegating general police powers to private persons.

The precise scope of constitutional identity remains a matter of legal interpretation and institutional dialogue. Conseil d’État+1

7.3. The Conseil d’État and the Arcelor decision

The Conseil d’État has also developed a method for reconciling EU obligations with French constitutional requirements.

Its decision of 8 February 2007 in Société Arcelor Atlantique et Lorraine concerned a challenge to a national regulatory measure implementing an EU directive.

The Conseil d’État developed a method of review based on identifying whether the constitutional principle invoked by the applicant has an equivalent protection under EU law.

Where an equivalent principle exists within EU law, the administrative court examines the national measure in light of the relevant EU standard and may, where necessary, refer a question to the CJEU.

Where no equivalent protection exists under EU law, the Conseil d’État may examine the national measure directly against the constitutional requirement.

The method seeks to preserve constitutional guarantees while respecting the specific mechanisms of EU law.

The Arcelor decision is an important example of judicial dialogue between national constitutional principles and European legal obligations. Conseil d’État+1

7.4. The limits of the domestic constitutional approach

The French position does not resolve every theoretical disagreement between national constitutional supremacy and EU primacy.

The CJEU maintains that EU law must take precedence over conflicting national law within its scope, while French constitutional institutions retain responsibility for safeguarding the Constitution in the domestic legal order.

These positions are based on different understandings of legal authority. EU law derives its authority from the treaties and the autonomous legal order established by them; French constitutional law derives its authority from the national constitutional framework.

In practice, the two systems operate through cooperation between courts, the preliminary-ruling procedure, constitutional interpretation, and the obligation of national authorities to respect EU law.

The relationship is therefore best understood as one of structured legal interaction rather than as a simple contest in which one institution always replaces the other.

8. National Legislation: Organic Laws, Ordinary Statutes, and Ordinances

Below the Constitution and the applicable international and European legal obligations, national legislation occupies a central position in the French legal system.

The Constitution distributes legislative authority principally through Articles 34, 37, and 38. It also recognises different categories of legislative instruments, including organic laws, ordinary statutes, and government ordinances adopted under parliamentary authorisation.

8.1. Organic laws

Organic laws (lois organiques) are special legislative instruments that implement or supplement provisions of the Constitution.

They regulate matters that the Constitution expressly reserves to organic legislation. These may concern the organisation and functioning of public institutions, the status of certain officeholders, the rules governing elections, and the procedures of constitutional institutions.

Organic laws occupy a special position in the legislative framework. They are not constitutional amendments and cannot override the Constitution. However, they are subject to a specific adoption procedure and mandatory constitutional review under Article 61.

The Constitution establishes procedural requirements for their adoption, including special voting rules in certain circumstances. The Constitutional Council must examine an organic law before its promulgation.

Organic laws therefore stand within the legislative framework but are distinguished from ordinary statutes by their constitutional function and adoption procedure.

8.2. Ordinary statutes

Ordinary statutes (lois ordinaires) are adopted by Parliament in accordance with the legislative procedure established by the Constitution.

Article 34 identifies the principal subject areas reserved to legislation. These include civil rights and fundamental guarantees, nationality, civil status and legal capacity, criminal offences and penalties, taxation, electoral systems, and certain aspects of public finance and social security.

Parliament also determines fundamental principles in other areas identified by Article 34, including national defence, education, property rights, labour law, and social security.

The precise scope of legislative authority is determined by the constitutional text and the interpretation developed by the Constitutional Council.

Ordinary statutes must comply with the Constitution, applicable international commitments, and EU law. They must also respect the constitutional rules governing the division between legislative and regulatory authority.

8.3. Government ordinances under Article 38

Article 38 allows the Government, for the implementation of its programme, to request parliamentary authorisation to adopt measures that would normally fall within the domain of legislation.

These measures are adopted by ordinances (ordonnances).

The procedure involves several stages:

1. The Government requests authorisation from Parliament through an enabling law.
2. Parliament specifies the purpose, scope, and duration of the authorisation.
3. The Government adopts the ordinance, generally after consultation with the Conseil d’État.
4. The ordinance is published and enters into force according to its provisions.
5. A ratification bill must be submitted within the period established by the enabling law.

Since the 2008 constitutional reform, ratification must be express. The constitutional and legal status of an ordinance also depends on the stage of the procedure and the nature of the provisions concerned.

Ordinances are particularly important in modern French legislation because they allow the Government to adopt substantial legal reforms within a framework authorised by Parliament. They have been used in areas such as contract law, labour law, administrative simplification, and economic regulation.

They should not be confused with ordinary executive regulations. Article 38 ordinances concern matters that ordinarily fall within the legislative domain and are adopted under a specific constitutional authorisation.

8.4. The relationship between statutes and codes

As discussed in the previous article on codification, many legislative provisions are incorporated into official codes.

A statute may create new legal rules, amend an existing code, or repeal provisions that are no longer applicable. The fact that a rule appears in the Civil Code, Criminal Code, Commercial Code, or another code does not change the constitutional basis of its authority.

A code is a structured legislative instrument, not an independent constitutional level.

For example, a provision of the Civil Code adopted through legislation has legislative force. A regulatory provision incorporated into the regulatory part of a code derives its authority from the executive’s regulatory power.

The distinction between the source and the legal rank of a provision is therefore essential.

9. Regulations and the Executive’s Regulatory Power

Regulations (règlements) are legal rules adopted by executive or administrative authorities within the powers granted to them by the Constitution and legislation.

They are subordinate to the Constitution, applicable international obligations, EU law, and legislation. Their purpose is to implement statutes, regulate matters falling within the regulatory domain, and organise the operation of public administration.

9.1. Article 37 and the regulatory domain

Article 37 of the Constitution establishes that matters outside the legislative domain have a regulatory character.

This provision is significant because it defines the residual authority of the executive. Parliament does not possess unlimited power to regulate every administrative and technical detail of public life. The Constitution reserves certain matters to legislation and allows the Government to regulate other areas.

The division is not always perfectly clear. Article 34 identifies broad legislative subjects, while Article 37 covers matters not reserved to Parliament.

The Government may also adopt implementing regulations where legislation expressly requires further rules to make a statutory framework operational.

9.2. Types of regulations

French regulations take several forms.

Decrees (décrets) may be adopted by the President of the Republic or the Prime Minister, depending on the constitutional and legal basis. Some decrees are adopted after consultation with the Conseil d’État.

Ministerial orders (arrêtés ministériels) are adopted by ministers within their areas of competence.

Prefectural orders (arrêtés préfectoraux) are adopted by prefects exercising state authority at the territorial level.

Municipal orders (arrêtés municipaux) are adopted by mayors within their legal powers, including local administrative and public-order responsibilities.

The authority of each instrument depends on the powers granted to the issuing institution. A minister, prefect, or mayor cannot adopt a rule outside the scope of their legal competence.

9.3. Regulations and the principle of legality

The principle of legality requires administrative authorities to comply with superior legal norms.

An administrative regulation must respect the Constitution, applicable international and European obligations, legislation, and the general legal principles applicable to the authority adopting it.

For example, a ministerial order cannot lawfully introduce a new tax where the Constitution reserves the relevant matter to legislation. Similarly, a mayor cannot impose restrictions on individual freedoms without a lawful basis and a legitimate public-order justification.

The Conseil d’État plays a central role in reviewing the legality of administrative regulations. Where an administrative act is unlawful, it may be annulled through judicial review, particularly through an action for annulment for excess of power (recours pour excès de pouvoir).

The principle ensures that executive authorities remain legally accountable and cannot use regulatory power to override the legislative framework.

10. Individual Administrative Decisions and the Application of Legal Norms

At the lower levels of the legal hierarchy are individual administrative decisions and other measures applying general rules to specific persons or situations.

Examples include:

• A building permit.
• A residence authorisation.
• A professional licence.
• A public-sector appointment.
• A tax assessment.
• An administrative sanction.
• A decision granting or refusing a public benefit.

These decisions must comply with the general legal rules governing their adoption. An administrative authority cannot lawfully issue an individual decision that contradicts a statute or regulation, exceeds its legal powers, or violates applicable constitutional, international, or European requirements.

For example, a local authority cannot refuse an application on a ground prohibited by legislation or impose a condition that has no legal basis.

The legality of individual administrative decisions may be challenged before the administrative courts, subject to the relevant jurisdictional and procedural rules.

This illustrates the practical operation of the hierarchy: general legal norms establish the conditions within which individual administrative decisions may be adopted.

11. Jurisprudence and General Principles of Law

French law is traditionally described as a civil-law system in which legislation occupies the central position. Nevertheless, judicial decisions play an important role in clarifying and applying legal rules.

Jurisprudence (jurisprudence) refers to the body of judicial decisions interpreting and applying the law. It is not generally treated as a legislative level equivalent to statutes or regulations, but decisions of the highest courts have substantial practical authority.

11.1. The role of the Cour de cassation

The Cour de cassation is the highest court within the ordinary judicial order.

It reviews decisions of lower courts on points of law and seeks to ensure consistent interpretation of legal provisions. Its jurisprudence is particularly important in civil law, commercial law, employment law, and criminal law.

Although the Court does not normally decide factual questions in the same way as a trial court, its interpretations of legal provisions influence the development of French law.

A judgment of the Cour de cassation cannot formally amend the Civil Code or Criminal Code. Nevertheless, its interpretation of statutory provisions may become highly influential in subsequent cases.

11.2. The role of the Conseil d’État

The Conseil d’État is the highest court of the administrative judicial order and also provides advisory opinions to the Government on legislative and regulatory matters.

Its judicial decisions are particularly important in administrative law, constitutional administration, public services, public liability, and the relationship between domestic law and international or European obligations.

The Conseil d’État has played a major role in developing the practical application of the hierarchy of norms, especially through decisions such as Nicolo, Sarran et Levacher, and Arcelor.

11.3. General principles of law

French administrative jurisprudence has also developed general principles of law (principes généraux du droit).

These principles may apply even where no specific statutory provision expressly addresses the relevant issue. They include principles relating to equality, the rights of defence, legal certainty, and the protection of individuals against arbitrary administrative action.

Their precise legal rank depends on the context and the relevant jurisprudence. They should not be confused with constitutional principles, although some principles may have both statutory or constitutional significance in different contexts.

General principles of law contribute to the coherence of the legal order by ensuring that administrative authorities respect fundamental requirements of legality and fairness.

11.4. Jurisprudence and the hierarchy of norms

Judicial decisions must themselves respect superior legal norms. A court cannot lawfully interpret a statute in a manner that contradicts the Constitution or applicable EU law, subject to the institutional and procedural rules governing constitutional and European review.

Where a court identifies a conflict, it must use the legal mechanism appropriate to its jurisdiction.

For example, an administrative court may set aside an administrative regulation that violates a statute or treaty. A judicial or administrative court may refuse to apply a statute incompatible with an applicable treaty. A constitutional question may be referred through the QPC procedure.

Jurisprudence therefore operates within the hierarchy while helping to define its practical meaning.

12. Judicial Review and the Resolution of Conflicts Between Legal Norms

The hierarchy of legal norms would have little practical significance without institutions capable of ensuring compliance with it. French law therefore provides several mechanisms through which courts and constitutional institutions examine whether a legal rule conforms to superior legal requirements.

The most important mechanisms are constitutional review, conventionality review, and judicial review of administrative legality. Although they may concern similar legal provisions, they are distinct procedures conducted by different institutions.

12.1. Constitutional review

Constitutional review examines whether legislation complies with the Constitution and the constitutional block.

The Constitutional Council performs this function through two principal procedures.

Preventive review under Article 61 takes place before promulgation. Certain categories of legislation must be referred to the Council, while ordinary statutes may be referred by the constitutionally authorised institutions and parliamentary minorities specified in the Constitution.

The QPC procedure under Article 61-1 allows constitutional questions to arise during existing judicial proceedings. A litigant may argue that a legislative provision infringes rights or freedoms guaranteed by the Constitution.

The question is filtered by the Conseil d’État or Cour de cassation before being referred to the Constitutional Council.

If the Council declares a provision unconstitutional, Article 62 determines the consequences. The provision may be repealed immediately or from a later date specified in the decision. The Council may also regulate the effects of the repeal to protect legal certainty and avoid serious disruption.

The Constitutional Council does not generally exercise the same function as an ordinary court examining whether a statute is compatible with an international treaty. This distinction is essential to understanding the French system.

12.2. Conventionality review

Conventionality review (contrôle de conventionnalité) examines whether national legislation is compatible with France’s international and European obligations.

The Constitutional Council established an important distinction between constitutional review and conventionality review in its decision of 15 January 1975 concerning the Voluntary Interruption of Pregnancy Act.

The Council considered that it was not its responsibility, in the constitutional review procedure, to determine whether a statute complied with an international treaty. It left that responsibility to the ordinary and administrative courts.

This decision opened the way for the development of conventionality review by the two judicial orders.

The Cour de cassation subsequently confirmed the priority of international commitments over conflicting legislation in its decision of 24 May 1975, Jacques Vabre.

The Conseil d’État followed in its landmark decision of 20 October 1989, Nicolo. It accepted that it could examine whether a statute was compatible with an international treaty even where the statute had been adopted after the treaty.

These decisions established that French courts may refuse to apply a national statutory provision where it conflicts with an applicable international commitment.

Importantly, conventionality review generally does not repeal the statute. The court sets aside the incompatible provision in the dispute before it, where the conditions for doing so are satisfied. The statute remains formally in force until it is amended or repealed through the appropriate legislative or constitutional procedure.

The Conseil d’État has subsequently confirmed the distinction between constitutional review, which belongs to the Constitutional Council within its constitutional jurisdiction, and conventionality review, which is exercised by the administrative and judicial courts. Conseil d’État+1

12.3. Review of administrative legality

Administrative acts must comply with the legal rules governing the authority that adopts them.

The administrative courts examine whether administrative decisions and regulations comply with superior legal requirements. This includes constitutional provisions, legislation, applicable treaties, EU law, and general principles of law.

The principal remedy is the recours pour excès de pouvoir, an action seeking the annulment of an unlawful administrative act.

A person with the required legal interest may challenge an administrative measure on grounds such as:

• Lack of competence of the authority that adopted it.
• Procedural or formal irregularities.
• Violation of the applicable legal rules.
• Misinterpretation or incorrect application of the law.
• Misuse of power.

The Conseil d’État is the highest court in the administrative judicial order and has developed extensive jurisprudence concerning the legality of administrative acts.

12.4. The preliminary-ruling procedure under EU law

Where a French court encounters a question concerning the interpretation or validity of EU law, it may refer the question to the Court of Justice of the European Union under Article 267 TFEU.

The procedure is particularly important where the meaning of an EU regulation or directive is uncertain, or where the validity of an EU act is challenged.

The CJEU provides an authoritative interpretation or rules on validity. The French court then applies the ruling to the national proceedings.

This mechanism supports the uniform application of EU law and prevents national courts from developing conflicting interpretations of the same European provisions.

12.5. Comparing the principal review mechanisms

Type of review	Principal institution	Main question
Constitutional review	Constitutional Council	Does legislation comply with the Constitution?
Conventionality review	Administrative and judicial courts	Is national law compatible with applicable international treaties?
EU-law review	National courts, with the CJEU where necessary	Does national law comply with applicable EU law?
Review of administrative legality	Administrative courts	Does an administrative act comply with superior legal norms?
QPC procedure	Constitutional Council, following judicial filtering	Does an applicable legislative provision infringe constitutionally guaranteed rights and freedoms?

These mechanisms are complementary. A single dispute may raise several different questions, but each must be examined through the appropriate legal procedure.

13. Important French Jurisprudence on the Hierarchy of Norms

The development of the French hierarchy of norms has been shaped by several landmark judicial decisions. They illustrate how constitutional institutions and courts have gradually defined the relationship between domestic legislation, international commitments, and EU law.

Decision	Court and date	Principal significance
Liberté d’association	Constitutional Council, 16 July 1971	Recognised the constitutional significance of principles contained in the Preamble and Declaration of 1789
IVG	Constitutional Council, 15 January 1975	Distinguished constitutional review from conventionality review
Jacques Vabre	Cour de cassation, 24 May 1975	Accepted the priority of applicable treaties over conflicting statutes
Nicolo	Conseil d’État, 20 October 1989	Accepted conventionality review of statutes, including subsequent legislation
Sarran et Levacher	Conseil d’État, 30 October 1998	Affirmed the supremacy of the Constitution over international treaties in domestic law
Fraisse	Cour de cassation, 2 June 2000	Confirmed the constitutional supremacy principle within the judicial order
Loi pour la confiance dans l’économie numérique	Constitutional Council, 10 June 2004	Recognised the constitutional requirement to transpose EU directives, subject to constitutional limits
Arcelor Atlantique et Lorraine	Conseil d’État, 8 February 2007	Developed a method for reconciling constitutional review with obligations arising from EU directives
Gardedieu	Conseil d’État, 8 February 2007	Recognised state liability in circumstances involving legislation incompatible with international obligations
French Data Network and others	Conseil d’État, 21 April 2021	Further developed the relationship between EU law, constitutional requirements, and national judicial responsibilities

These decisions demonstrate that the hierarchy of norms has not developed solely through constitutional text. Its practical operation has emerged through judicial interpretation and institutional dialogue.

13.1. The significance of Nicolo

The Nicolo judgment deserves particular attention because it transformed the practical relationship between French legislation and international commitments.

Before this decision, the Conseil d’État had been reluctant to set aside a later statute because of its incompatibility with an earlier treaty. The court effectively considered that a subsequent statute reflected the will of Parliament and should therefore be applied.

In Nicolo, the Conseil d’État abandoned that approach and accepted that a statute could be examined for compatibility with an international treaty irrespective of whether it had been adopted before or after the treaty.

This decision brought administrative jurisprudence into line with the approach already adopted by the Cour de cassation in Jacques Vabre.

It also confirmed the practical effectiveness of Article 55.

13.2. The significance of Sarran et Levacher

The Sarran et Levacher decision clarified that the superiority of treaties over statutes does not mean that treaties prevail over the Constitution in the domestic legal order.

This distinction remains central to French constitutional law. It allows international commitments to operate with considerable authority while preserving the constitutional framework within which French public institutions exercise their powers.

13.3. The significance of Arcelor

The Arcelor judgment illustrates the practical difficulty of reconciling EU law with constitutional requirements.

Rather than simply refusing to apply an EU-related measure because a constitutional principle was invoked, the Conseil d’État developed a method involving comparison with equivalent protections under EU law.

This approach reflects the importance of judicial cooperation and the need to maintain both constitutional safeguards and the uniform application of European law.

14. Practical Examples: How the Hierarchy of Norms Operates

The hierarchy of norms is easier to understand when applied to concrete situations.

Example 1: A statute conflicts with the Constitution

Suppose Parliament adopts a statute that restricts a fundamental freedom in a manner incompatible with a constitutional guarantee.

Before promulgation, the Constitutional Council may be asked to examine the legislation under Article 61. If the law has already entered into force, a litigant may raise a QPC if the relevant procedural conditions are satisfied.

If the Council declares the provision unconstitutional, it may be prevented from entering into force or may be repealed under Article 62.

The statute cannot lawfully prevail over the Constitution.

Example 2: A statute conflicts with the European Convention on Human Rights

Suppose a French statute imposes a restriction that conflicts with a right protected by the European Convention on Human Rights.

A person affected by the provision may invoke the Convention before a competent French court, provided the relevant treaty provision can be relied upon in the circumstances.

If the court finds that the statute is incompatible with the Convention, it may refuse to apply the conflicting provision in the case.

The statute is not automatically repealed. The decision concerns its application in the proceedings before the court.

Example 3: A national regulation conflicts with an EU regulation

Suppose a French ministerial order imposes a technical requirement that contradicts a directly applicable EU regulation.

The national regulation cannot lawfully override the EU rule. A competent French court must give effect to the applicable EU provision and may annul or set aside the conflicting national measure through the appropriate procedure.

Example 4: A directive has not been transposed correctly

Suppose France fails to transpose an EU directive within the prescribed period.

A person seeking to rely on the directive must consider its wording, the expiry of the transposition deadline, and the nature of the defendant.

Where a provision is sufficiently clear, precise, and unconditional, it may be invoked vertically against the state or an emanation of the state. It cannot, as a general rule, be used by itself to impose an obligation directly on another private party.

The national court must also interpret domestic law consistently with the directive so far as possible.

Example 5: A local authority adopts an unlawful administrative order

Suppose a mayor adopts an order restricting an activity in a way that exceeds the authority granted by legislation.

The affected person may challenge the order before the administrative court.

If the court finds that the mayor acted outside the legal powers granted by law, or violated superior legal requirements, it may annul the order.

These examples illustrate that the consequences of a conflict depend on the nature of the legal instruments involved and the jurisdiction of the institution examining the dispute.

15. The Continuing Importance of the Hierarchy of Norms in France

The hierarchy of norms remains essential to the functioning of the French Republic because it establishes the legal conditions under which public authority may be exercised.

It ensures that Parliament operates within the Constitution, that the Government respects legislative limits, and that administrative authorities cannot adopt measures contrary to superior legal requirements.

It also reflects the transformation of the French legal system through international cooperation and European integration.

In the nineteenth century, the central challenge of French legal organisation was the establishment of a unified national legal order based on legislation and codification. In the contemporary period, the challenge is increasingly one of coordinating different legal orders while preserving constitutional guarantees.

The Constitution, international treaties, EU law, national legislation, regulations, and jurisprudence do not operate in isolation. They form an interconnected legal framework in which different institutions exercise different responsibilities.

The Constitutional Council protects constitutional requirements through constitutional review. The Conseil d’État and Cour de cassation ensure the application of international and European obligations within their respective jurisdictions. The CJEU contributes to the uniform interpretation of EU law, while the European Court of Human Rights supervises compliance with the European Convention on Human Rights.

This arrangement demonstrates that modern constitutional government depends not only on the adoption of legal rules but also on the existence of institutions capable of ensuring that those rules are respected.

The hierarchy of norms is therefore more than an ordering of legal texts. It is a mechanism for maintaining constitutional legality, protecting fundamental rights, distributing public authority, and ensuring that France’s participation in international and European legal systems remains governed by law.

Key Takeaways

• The hierarchy of legal norms establishes the relative authority of different legal rules and requires lower-ranking norms to comply with applicable superior norms.
• The French Constitution of 1958 is the supreme legal norm within the domestic legal order.
• The constitutional block includes the Constitution, the Declaration of the Rights of Man and of the Citizen of 1789, the Preamble of 1946, the Environmental Charter of 2004, and other recognised constitutional principles.
• Article 54 establishes a procedure for addressing international commitments that conflict with the Constitution before ratification or approval.
• Article 55 provides that duly ratified or approved and published treaties have authority superior to statutes, subject to the applicable conditions, including reciprocity where relevant.
• Not every treaty provision is directly invocable by an individual before a French court. Direct effect depends on the nature and content of the provision.
• French courts have affirmed that the Constitution remains superior to international treaties within the domestic legal order.
• EU law has a distinct legal status based on the EU treaties and the constitutional recognition of France’s participation in the Union under Article 88-1.
• EU regulations are directly applicable, while directives generally require national transposition, although certain directive provisions may be invoked vertically under established conditions.
• The principle of primacy requires applicable EU law to take precedence over conflicting national law within the scope of EU law.
• French constitutional institutions have developed the concept of constitutional identity to address certain conflicts between EU obligations and constitutional requirements.
• Organic laws, ordinary statutes, and ordinances are different forms of national legislation, each subject to constitutional requirements.
• Article 37 establishes the regulatory domain, while Article 34 identifies matters reserved to legislation.
• Executive regulations must comply with the Constitution, legislation, applicable international commitments, and EU law.
• Constitutional review, conventionality review, and review of administrative legality are distinct but complementary judicial mechanisms.
• Légifrance, the Constitutional Council, the Conseil d’État, the Cour de cassation, EUR-Lex, and the CJEU are essential resources for researching the hierarchy of legal norms.

Frequently Asked Questions

1. What is the hierarchy of legal norms in France?

It is the principle that legal rules have different levels of authority and that lower-ranking rules must comply with superior legal requirements. The Constitution occupies the highest position in the French domestic legal order, followed by applicable international commitments and EU law in their respective fields, national legislation, regulations, and individual administrative measures.

2. Is the French Constitution superior to international treaties?

Yes. Within the French domestic legal order, the Constitution is superior to international treaties. This principle was confirmed by the Conseil d’État in Sarran et Levacher in 1998 and by the Cour de cassation in Fraisse in 2000. However, France remains internationally bound by its treaty obligations, and domestic constitutional supremacy does not automatically remove international responsibility.

3. What does Article 55 of the French Constitution provide?

Article 55 provides that treaties or agreements duly ratified or approved have, upon publication, authority superior to statutes, subject to the condition that the other party applies the relevant agreement where reciprocity is applicable.

4. Can an international treaty override a French statute?

Yes, where the treaty satisfies the constitutional requirements and the relevant provision can be applied in the case. French courts may refuse to apply a statutory provision that conflicts with an applicable international treaty. This does not necessarily repeal the statute; it prevents its application in the particular proceedings.

5. What is the difference between constitutional review and conventionality review?

Constitutional review examines whether legislation complies with the Constitution and the constitutional block. It is principally the responsibility of the Constitutional Council.

Conventionality review examines whether national legislation is compatible with international treaties and applicable European obligations. It is carried out by the ordinary and administrative courts.

6. What is the significance of the Nicolo judgment?

In its decision of 20 October 1989, the Conseil d’État accepted that it could examine whether a French statute was compatible with an international treaty even if the statute had been adopted after the treaty. The judgment established a major development in the application of Article 55.

7. Does EU law have supremacy over French law?

Under EU law, the principle of primacy requires EU rules to take precedence over conflicting national rules within the scope of EU law. French courts recognise and apply this principle. However, French constitutional jurisprudence maintains that the Constitution remains the supreme norm within the domestic legal order. The relationship is managed through Article 88-1, constitutional jurisprudence, and judicial cooperation.

8. What is the difference between an EU regulation and a directive?

A regulation is binding in its entirety and directly applicable in all Member States. A directive is binding as to the result to be achieved but generally requires national transposition. Certain sufficiently clear, precise, and unconditional provisions of directives may be invoked vertically after the transposition deadline has expired.

9. What is constitutional identity in French law?

Constitutional identity refers to principles regarded as inherent in the French constitutional order. The concept has been used by the Constitutional Council and the Conseil d’État when examining the relationship between EU obligations and fundamental national constitutional requirements. It is a specific constitutional safeguard, not a general exemption from EU law.

10. What is the difference between an organic law and an ordinary statute?

An organic law implements or supplements constitutional provisions and is subject to a special legislative procedure and mandatory review by the Constitutional Council. An ordinary statute is adopted under the general legislative procedure and regulates matters within Parliament’s legislative competence.

11. What are ordinances under Article 38?

They are legal instruments adopted by the Government following parliamentary authorisation to regulate matters that normally fall within the legislative domain. They are used to facilitate substantial legal reforms and must follow the constitutional procedure governing authorisation and ratification.

12. Can a French regulation contradict a statute?

No. Regulations are subordinate to legislation and must comply with the legal framework governing their adoption. An unlawful regulation may be challenged before the administrative courts and annulled if it violates superior legal norms.

13. Which courts enforce the hierarchy of legal norms in France?

Different institutions have different responsibilities. The Constitutional Council reviews legislation against the Constitution. The Cour de cassation and Conseil d’État conduct conventionality review within their respective jurisdictions. Administrative courts review the legality of administrative acts. The CJEU ensures the authoritative interpretation and application of EU law.

14. Can a French court refuse to apply an unconstitutional statute?

Ordinary courts do not generally possess the same power as the Constitutional Council to declare a statute unconstitutional. However, a constitutional question may be raised through the QPC procedure. If the Constitutional Council declares the provision unconstitutional, it may be repealed under Article 62.

15. Where can the hierarchy of legal norms be researched?

The most useful official resources include Légifrance for French legislation, the Constitutional Council for constitutional decisions, the Conseil d’État and Cour de cassation for national jurisprudence, EUR-Lex for EU legislation, and the CJEU for European judicial decisions.

Conclusion

The hierarchy of legal norms is one of the fundamental principles of the French constitutional and legal order. It establishes the authority of the Constitution, defines the relationship between international commitments and national legislation, and ensures that administrative and executive powers remain subject to legal limits.

The French Constitution occupies the highest position within the domestic legal system. International treaties, once they satisfy the requirements of Article 55, prevail over statutes. European Union law operates through a distinctive legal order based on the treaties, the principle of primacy, and the constitutional recognition of France’s participation in the Union. National legislation and executive regulations must comply with these superior requirements, while individual administrative decisions must respect the entire applicable legal framework.

The development of this system has depended heavily on judicial interpretation. Decisions such as Jacques Vabre, Nicolo, Sarran et Levacher, Fraisse, and Arcelor have helped define the relationships between constitutional law, international commitments, and European obligations. The Constitutional Council, Conseil d’État, Cour de cassation, and CJEU each contribute to the functioning of this interconnected system.

Ultimately, the hierarchy of norms is not merely a technical method of ranking legal texts. It is a constitutional guarantee that public authority must be exercised according to law, that fundamental rights are protected through enforceable legal standards, and that France’s participation in international and European institutions takes place within an organised framework of legal responsibility.

Official and Further Reading Sources

French constitutional and legislative sources

1. Constitution of 4 October 1958 – Légifrance – Official constitutional text, including Articles 34, 37, 38, 54, 55, 61, 61-1, 62, and 88-1.
2. Ministry of Justice – Sources of Law – Official explanation of the sources of French law and their hierarchy.
3. Constitutional Council – Constitutional decisions, constitutional review, and information about the QPC procedure.
4. Senate – Constitutional Review of Laws – Explanation of the development and operation of constitutional review in France.
5. Conseil d’État – The Defence of Legislation – Discussion of conventionality review, constitutional supremacy, and the respective roles of French courts.

International and European legal sources

6. EUR-Lex – Hierarchy of EU Norms – Official explanation of primary and secondary EU law and the hierarchy of EU legal instruments.
7. Court of Justice of the European Union – Official judgments, preliminary rulings, and information on EU judicial procedures.
8. European Convention on Human Rights – Official text of the Convention and related materials.
9. European Court of Human Rights – HUDOC – Database of judgments and decisions of the European Court of Human Rights.
10. Conseil d’État – The Administrative Judge and EU Law – Analysis of the interaction between EU law and French administrative jurisprudence.