Public Policy Exception in Conflict of Laws

Public Policy Exception in Conflict of Laws

What Is the Public Policy Exception in Conflict of Laws?

The public policy exception is a principle of conflict of laws under which a court may refuse to apply otherwise applicable foreign or out-of-state law when applying that law would be fundamentally inconsistent with an important public policy of the forum jurisdiction.

Conflict of laws exists because a single dispute may have connections with several jurisdictions, each of which may have different legal rules. A court therefore must determine which jurisdiction’s law should govern a particular issue. Cornell’s Legal Information Institute explains that conflict of laws concerns differences between the laws of jurisdictions connected to a case and the process by which a court determines which law applies.

The public policy exception operates after or within that choice-of-law analysis.

The court may conclude:

“The law of another jurisdiction would ordinarily govern this issue, but applying that law here would conflict so seriously with an important policy of this forum that the foreign rule should not be applied.”

The exception therefore represents a tension between two competing principles.

On one side is the principle that courts should respect the legal rules of jurisdictions that have legitimate connections to a dispute.

On the other side is the principle that a jurisdiction should not ordinarily be required to apply another jurisdiction’s law when doing so would undermine a fundamental policy that its own legal system considers particularly important.

The exception is consequently a limited doctrine, not a general preference for local law.

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Why Does the Public Policy Exception Exist?

Conflict-of-laws doctrine seeks to prevent a court from automatically applying its own law whenever a case crosses a jurisdictional boundary.

Modern legal systems recognize that another jurisdiction may have a legitimate interest in regulating conduct, relationships, property, contracts, or persons connected to it.

A state may therefore apply another state’s law even when that law differs from its own.

The public policy exception recognizes that this principle has limits.

Some legal rules express policies that a jurisdiction considers so important that it will not readily permit those policies to be displaced by the law of another jurisdiction.

Examples might involve laws concerning:

• fundamental rights;
• protection against discrimination;
• usury;
• family relationships;
• limitations on contractual freedom;
• worker protections;
• certain forms of liability;
• prohibited contracts;
• regulated financial activity;
• or other matters regarded as particularly important by the forum.

But the fact that the forum’s law is different is not enough.

The foreign rule must generally create a genuine and sufficiently serious conflict with an important forum policy.

That distinction is critical.

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The Exception Is Not a General “My Law Is Better” Rule

The public policy exception can easily be misunderstood.

A court cannot simply say:

“Our state has a different law, and therefore our law should apply.”

If that were sufficient, the entire purpose of conflict-of-laws doctrine would be undermined.

Every jurisdiction could defeat a choice-of-law analysis merely by pointing to a difference between its own law and the law selected under the applicable conflict rules.

The exception is therefore ordinarily reserved for situations in which the difference is not merely ordinary legal variation but involves a policy that the forum regards as sufficiently fundamental.

This is why courts often describe public policy as a narrow exception.

The underlying principle is one of restraint.

A court should not invoke public policy simply because another jurisdiction has reached a different legislative judgment.

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Public Policy and Choice of Law

The public policy exception is closely connected to the basic choice-of-law process.

Suppose a dispute has meaningful contacts with two states.

State A permits a particular contractual arrangement.

State B prohibits it.

The parties litigate in State B.

The court first determines which state’s law should govern under the forum’s conflict-of-laws methodology.

If the analysis points to State A, the court may ordinarily apply State A’s law.

But State B may argue that applying State A’s rule would violate a fundamental policy of State B.

The court must then determine whether the circumstances justify refusing to apply the otherwise governing law.

The analysis therefore involves two distinct questions:

First: Which law ordinarily governs?

Second: Would applying that law violate a sufficiently important public policy of the forum?

The second question should not replace the first.

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The Public Policy Exception and the Forum State

The forum is the jurisdiction whose court is hearing the case.

If a lawsuit is filed in a New York court, New York is the forum.

If a lawsuit is filed in a California state court, California is the forum.

If a federal court is hearing a diversity case, the relevant conflict-of-laws analysis generally follows the choice-of-law rules of the state in which the federal court sits.

Cornell’s Wex explains that a federal diversity court determines the conflict-of-laws issue as the highest court of the state in which it sits would determine it.

The public policy exception is therefore ordinarily associated with the forum’s legal system.

But the identity of the forum does not automatically mean that forum law governs.

The whole purpose of conflict-of-laws doctrine is to determine whether another jurisdiction’s law should apply.

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Public Policy Is Not the Same as Public Interest

The phrase “public policy” can sound extremely broad.

Almost every law reflects some conception of public interest.

That does not mean that every legislative preference creates a public-policy exception.

Courts generally distinguish between:

ordinary policy differences

and

fundamental policy conflicts.

For example, two states might establish different statutory damages, different limitation periods, or different contractual requirements.

The existence of different policy choices does not necessarily justify rejecting the law selected by ordinary conflict-of-laws principles.

The exception becomes more significant when the foreign rule would undermine a principle that the forum regards as fundamental.

Thus, public policy must generally be understood in relation to the importance and strength of the particular policy, not merely the fact that a statute exists.

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Fundamental Public Policy

The concept of fundamental policy is central to modern conflict-of-laws analysis.

The Restatement (Second) of Conflict of Laws frequently frames the issue in terms of whether applying another jurisdiction’s law would violate a fundamental policy of the forum or another state with a materially greater interest in the particular issue.

The word “fundamental” matters.

A policy does not become fundamental merely because:

• it appears in a statute;
• legislators enacted it;
• the forum court prefers it;
• or the forum would reach a different result.

The stronger the claimed policy, the more persuasive the argument for displacing otherwise applicable foreign law.

Courts therefore often examine the purpose, history, importance, and scope of the forum rule.

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The Public Policy Exception and the Restatement Approach

The Restatement (Second) of Conflict of Laws has had a major influence on American conflict-of-laws doctrine.

Its approach recognizes that choice-of-law analysis should take account of factors such as:

• the needs of the interstate system;
• relevant policies of the forum;
• relevant policies of other interested states;
• protection of justified expectations;
• predictability;
• certainty;
• and ease of determining and applying the law.

Within this broader framework, the public policy of the forum can be an important consideration.

Section 187, dealing with contractual choice-of-law provisions, is particularly important because it addresses situations in which parties have expressly selected governing law.

Under the Restatement approach, a contractual choice of law is generally respected unless specified circumstances justify displacement, including conflict with a fundamental policy of a state having a materially greater interest in the particular issue.

The Supreme Court discussed this formulation in Great Lakes Insurance SE v. Raiders Retreat Realty Co., although it declined to adopt the Restatement’s § 187(2)(b) approach for federal maritime law.

This illustrates an important point:

Conflict-of-laws principles are not identical across every field of American law.

A doctrine developed for state-law conflicts may not automatically govern an area controlled by federal law.

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Public Policy and Contractual Choice-of-Law Clauses

Contracts frequently contain provisions specifying the law that will govern disputes.

For example:

“This Agreement shall be governed by the laws of State A.”

Such provisions promote predictability.

Businesses can structure transactions knowing in advance which legal system will ordinarily govern their relationship.

But contractual freedom is not unlimited.

A party may argue that the selected law conflicts with a fundamental policy of another jurisdiction.

Whether that argument succeeds depends on the applicable choice-of-law doctrine.

Courts may examine:

• whether the selected jurisdiction has a substantial relationship to the parties or transaction;
• whether another jurisdiction has a materially greater interest;
• whether the relevant policy is fundamental;
• whether the parties reasonably expected the selected law to apply;
• and whether enforcing the clause would undermine an important legislative policy.

The exact test varies by jurisdiction and subject matter.

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Great Lakes Insurance v. Raiders Retreat

The Supreme Court’s 2024 decision in Great Lakes Insurance SE v. Raiders Retreat Realty Co. illustrates the importance of context.

The dispute involved a maritime insurance contract containing a New York choice-of-law provision. The insured argued that Pennsylvania public policy should override the contractual selection of New York law.

The Supreme Court rejected that approach in the context of federal maritime law.

The Court held that choice-of-law provisions in maritime contracts are presumptively enforceable, subject to narrow exceptions, emphasizing the federal interest in uniformity and predictability in maritime commerce.

The case is particularly useful because it demonstrates that the phrase “public policy exception” cannot be applied mechanically.

The relevant question is always:

What body of law governs this particular dispute?

State conflict-of-laws doctrine, federal common law, maritime law, federal statutes, and other specialized legal regimes may produce different answers.

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Public Policy and Foreign Law

The public policy exception is especially important in international conflict-of-laws cases.

Suppose a U.S. court determines that the law of another country should govern a particular issue.

The foreign law may contain a rule that differs significantly from American law.

That difference alone does not necessarily justify refusing to apply it.

International legal systems necessarily contain different social, economic, cultural, and legal policies.

A U.S. court would defeat the purpose of conflict-of-laws doctrine if it treated every foreign legal difference as contrary to American public policy.

The question is instead whether applying the foreign rule would violate a sufficiently fundamental policy of the forum.

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International Comity and Public Policy

Public policy and international comity are closely related but not identical.

Comity reflects respect for the laws and institutions of other jurisdictions.

Public policy can limit that respect when application or recognition of foreign law would be fundamentally inconsistent with an important policy of the forum.

The two principles therefore operate in tension.

Comity encourages courts to respect foreign legal systems.

Public policy provides a limit to that respect.

Historically, the Supreme Court recognized that a sovereign does not necessarily lend the assistance of its courts to enforce a foreign contract when doing so would be repugnant to its public policy. In Bond v. Hume, for example, the Court emphasized both the importance of public policy and the general principle of comity, cautioning against refusing effect to foreign law without a clear basis for doing so.

The modern lesson is one of balance:

Respect foreign law, but do not disregard fundamental domestic policy.

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Public Policy and Foreign Contracts

Contracts are one of the classic settings for the public policy exception.

Imagine that a contract was entered into abroad and is valid under the law of the foreign country.

The successful party later brings an action in a U.S. court.

The foreign law may ordinarily govern the contract.

But suppose the contract involves conduct that the forum considers fundamentally unlawful or contrary to a strong legislative policy.

The defendant may argue that enforcement should be refused.

The court may then have to determine:

1. whether the foreign law actually governs;
2. whether the contract is valid under that law;
3. what public policy the forum asserts;
4. how fundamental that policy is;
5. whether applying foreign law would actually undermine that policy;
6. whether the forum has a sufficiently strong interest in the matter;
7. and whether another legal doctrine independently requires enforcement or recognition.

The exception is therefore not automatic.

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Public Policy and Employment Law

Employment disputes frequently produce conflicts between jurisdictions with different regulatory standards.

For example, one state may impose stronger employee protections than another.

An employment relationship may involve:

• an employee living in one state;
• an employer headquartered in another;
• work performed in several states;
• and a contract selecting the law of a fourth jurisdiction.

A forum court may have to decide which law governs.

The employee may argue that applying another state’s law would defeat an important protective policy of the forum.

Whether the public policy exception applies depends upon the forum’s conflict-of-laws doctrine and the particular statute or policy involved.

A court will generally need to determine whether the forum has a sufficiently strong interest in protecting the employee under its own law.

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Public Policy and Family Law

Family law can present particularly sensitive public-policy questions.

Different jurisdictions may have substantially different rules concerning:

• marriage;
• divorce;
• parental rights;
• adoption;
• marital property;
• child support;
• and other family relationships.

A U.S. court may therefore encounter a foreign or out-of-state legal rule that conflicts with important domestic family-law policies.

But family-law disputes must be approached carefully.

Not every difference between jurisdictions constitutes a public-policy violation.

The court may distinguish between:

• a foreign rule that is simply different;
• a foreign rule that produces an unfamiliar result;
• and a foreign rule that would fundamentally contradict a mandatory policy of the forum.

The precise doctrine also depends upon whether the case concerns status, economic rights, custody, or enforcement of an existing judgment.

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Public Policy and Marriage

Marriage is a classic example of how public policy and conflict of laws can intersect.

Suppose a marriage was celebrated in another jurisdiction and later becomes relevant in a U.S. court.

The court may ordinarily look to the law governing the validity of the marriage.

But if the forum has a strong policy concerning a particular category of marriage, the court may have to determine whether recognition would conflict with that policy.

Historically, American courts have sometimes used public policy to refuse recognition of certain marriages or relationships that violated the forum’s laws.

Modern constitutional doctrine, however, substantially limits the ability of states to discriminate against constitutionally protected marriages or relationships.

Therefore, public policy cannot be analyzed in isolation from the Constitution.

A state’s claimed public policy must itself be constitutionally valid.

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Public Policy and Constitutional Rights

This is one of the most important limitations on the public policy exception.

A state cannot invoke “public policy” to avoid federal constitutional requirements.

If the Constitution establishes a right or prohibits a particular form of discrimination, a state cannot simply characterize its contrary rule as an expression of public policy and thereby escape federal law.

The Supremacy Clause means that valid federal law and constitutional requirements take precedence over conflicting state law.

Consequently, when public policy is invoked in conflict-of-laws litigation, the court must ask not only:

What does the forum consider important?

but also:

Is the forum’s asserted policy itself legally permissible?

Public policy is a doctrine of state law and conflict of laws; it is not a source of authority above the Constitution.

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Public Policy and Federal Law

Federal law may also limit the ability of a state to reject foreign or sister-state law.

Congress may establish a governing federal rule.

A federal statute may preempt state law.

A treaty may establish international obligations.

The Constitution may impose limits.

Federal common law may govern certain specialized areas.

Therefore, a state court’s invocation of public policy cannot be understood without considering the hierarchy of applicable law.

The forum’s public policy operates within the American constitutional system.

It does not stand above federal law.

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Public Policy and the Full Faith and Credit Clause

One of the most important distinctions in this area concerns sister-state judgments.

The Constitution’s Full Faith and Credit Clause requires states to recognize the judgments of other states when the constitutional requirements are satisfied.

The Supreme Court has repeatedly distinguished between:

choice of law, and

recognition of an already-entered judgment.

A state may have some ability to consider its own public policy when determining what law should govern a controversy.

But once a valid final judgment has been entered by another state court with appropriate jurisdiction, the forum generally cannot invoke its own public policy as a free-standing reason to refuse the judgment’s required recognition.

The Supreme Court made this especially clear in Baker v. General Motors Corp.

The Court stated that a state may be guided by its public policy in determining the law applicable to a controversy, but there is no general public-policy exception to the Full Faith and Credit obligation owed to sister-state judgments.

This distinction is essential.

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Choice of Law Versus Recognition of Judgments

Consider two situations.

Situation One: Choice of Law

A lawsuit is filed in State B.

No court has previously entered a judgment.

The court must determine whether State A or State B law governs the dispute.

Public policy may be relevant to that choice.

Situation Two: Recognition of Judgment

A court in State A has already entered a valid final judgment.

The winning party seeks recognition in State B.

State B cannot simply say:

“We disagree with State A’s policy, so we will not recognize the judgment.”

The Full Faith and Credit Clause imposes constitutional constraints.

The distinction is therefore:

Public policy may influence the selection of governing law.

Public policy does not create a general escape from constitutional recognition of sister-state judgments.

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Public Policy and Foreign Judgments

Foreign-country judgments present a different legal situation from sister-state judgments.

A foreign country is not another state of the United States.

The constitutional Full Faith and Credit Clause does not generally impose the same direct recognition obligation on foreign judgments that it imposes among U.S. states.

Foreign judgment recognition is therefore ordinarily governed by state recognition statutes, common law, principles of comity, and applicable federal law.

Public policy can play a significant role in that analysis.

A court may refuse recognition of a foreign judgment when doing so would violate a fundamental public policy of the forum, depending upon the governing recognition framework.

This is one reason it is essential to distinguish:

foreign law,

foreign judgments,

sister-state law,

and

sister-state judgments.

They are governed by overlapping but different doctrines.

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Public Policy and Enforcement

The public policy exception may also arise when a party seeks enforcement rather than merely recognition.

For example, a foreign judgment may be validly entered abroad, but the prevailing party seeks to collect money or enforce an obligation in the United States.

The forum may examine whether recognition or enforcement is prohibited by its governing law, including applicable public-policy limitations.

Again, however, the exact doctrine depends upon the type of judgment and the jurisdiction.

Money judgments, family judgments, arbitral awards, and judgments involving property can be subject to different legal frameworks.

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Public Policy and Arbitration

Arbitration provides another important example of the limited nature of public-policy objections.

Under U.S. law, courts strongly favor enforcement of arbitration agreements and awards.

International arbitration may also be governed by federal statutes and treaties, including the New York Convention as implemented in U.S. law.

Public-policy objections can exist in arbitration law, but they are generally narrow.

The Supreme Court has repeatedly emphasized that a public-policy exception to enforcement should not become a mechanism for courts to revisit the merits of an arbitration award.

This illustrates a broader principle:

Where federal law establishes a specialized legal regime, the general public policy doctrine of state conflict of laws may not control.

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Public Policy and Mandatory Rules

Public policy is closely related to the concept of mandatory rules.

A mandatory rule is a rule that a jurisdiction considers sufficiently important that parties cannot simply contract around it.

For example, a statute might establish minimum protections for workers or consumers.

If a contract selects another jurisdiction’s law, a court may have to determine whether the mandatory rule nevertheless applies.

But the existence of a mandatory rule does not automatically mean that every choice-of-law clause is invalid.

The court must apply the relevant conflict-of-laws methodology.

The strength of the policy, the connection between the forum and the dispute, the expectations of the parties, and the governing legal framework may all matter.

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Public Policy and Party Autonomy

Modern commercial law places considerable value on party autonomy.

Businesses often want to know in advance which law will govern their agreements.

Choice-of-law clauses promote:

• predictability;
• stability;
• reduced litigation risk;
• lower transaction costs;
• and greater certainty in international commerce.

The public policy exception places a limit on this autonomy.

But that limit must be carefully drawn.

If courts could invalidate any choice-of-law clause whenever a party later identified a different policy of the forum, contractual choice-of-law provisions would become significantly less predictable.

This is one reason courts generally approach public-policy objections cautiously.

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Public Policy and Legitimate Expectations

The expectations of the parties can be particularly important in contractual disputes.

If sophisticated parties deliberately select a jurisdiction’s law because their transaction has a substantial connection to that jurisdiction, a court may be reluctant to disregard that selection.

For example, two multinational corporations may deliberately choose New York law because their contract is heavily connected to New York financial markets.

A later argument that another state has a somewhat different policy does not necessarily justify defeating the parties’ choice.

The court must determine whether the competing policy is sufficiently fundamental to override the expectations protected by the applicable conflict-of-laws rules.

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Public Policy and the Interests of Other Jurisdictions

Public policy should not be examined in isolation.

Conflict-of-laws analysis often requires consideration of the interests of several jurisdictions.

Suppose:

• State A is the place of contracting;
• State B is where performance occurs;
• State C is where one party lives;
• and State D is the forum.

Each jurisdiction may have different interests.

State D may have an important policy, but State A or State B may have an even stronger interest in regulating the transaction.

The court therefore must avoid assuming that the forum’s policy automatically controls merely because the lawsuit was filed there.

The strength of the forum’s policy and the strength of the competing jurisdiction’s interests must be considered within the governing choice-of-law framework.

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Public Policy and the “False Conflict”

Sometimes courts discover that the apparent conflict between jurisdictions is not actually significant.

This is sometimes described as a false conflict.

Suppose State A and State B have different statutory language, but both states’ laws would produce the same result under the facts of the case.

There may be no genuine choice-of-law problem.

Likewise, one jurisdiction may have a policy concerning conduct that has no meaningful connection to the dispute.

In such cases, invoking the public policy exception may be unnecessary.

The court should first determine whether there is a real conflict that affects the outcome.

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Public Policy and a “True Conflict”

A true conflict exists when two jurisdictions have legitimate interests in the issue and their laws would produce materially different outcomes.

This is where public policy analysis becomes more significant.

Suppose State A permits a particular type of contractual limitation while State B prohibits it to protect consumers.

If the transaction is strongly connected to both states, the court may need to determine:

• which jurisdiction’s policy should prevail;
• which jurisdiction has the stronger interest;
• whether the policy is fundamental;
• and whether the forum’s public policy should prevent application of the competing law.

The public policy exception is therefore part of a larger conflict-of-laws analysis rather than a substitute for it.

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Public Policy and Territoriality

Historically, conflict-of-laws doctrine was strongly influenced by territorial principles.

A state generally regulated conduct within its territory.

Over time, however, American conflict-of-laws doctrine became more flexible.

Courts began considering:

• governmental interests;
• relationships among the parties;
• justified expectations;
• policies of competing jurisdictions;
• and the substantive objectives of the relevant laws.

Public policy therefore cannot be understood purely geographically.

The location of conduct remains important, but it is only one factor in many modern approaches.

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Public Policy and the “Most Significant Relationship”

Some jurisdictions follow approaches influenced by the Restatement (Second) of Conflict of Laws and ask which state has the most significant relationship to the issue.

Under such an approach, public policy may be one of several factors relevant to the determination.

The court may consider:

• the place where the injury occurred;
• the place where the conduct occurred;
• the domicile or residence of the parties;
• the place where the relationship is centered;
• the place where the transaction occurred;
• and the policies underlying the competing laws.

The public policy exception may then reinforce the conclusion that a particular jurisdiction’s law should apply.

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Public Policy Is Issue-Specific

Another important feature of modern conflict-of-laws doctrine is that public policy may be considered on an issue-by-issue basis.

A court does not necessarily select one state’s law for the entire dispute.

For example:

• one state’s law may govern contract formation;
• another state’s law may govern damages;
• another jurisdiction’s law may govern property;
• and a fourth jurisdiction’s law may govern a procedural issue.

The forum’s public policy may be relevant to one issue but not another.

This is sometimes associated with dépeçage, the practice of applying different legal systems to different issues within the same case.

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Public Policy and Procedural Rules

The public policy exception primarily concerns substantive conflict-of-laws questions.

Procedural rules are generally governed by the law of the forum.

Thus, a court usually does not need to invoke the public policy exception merely because another jurisdiction has different procedural rules.

The court normally applies its own procedural system.

However, the distinction between substance and procedure can be difficult.

A rule labeled “procedural” under one jurisdiction’s law may have significant substantive consequences under another.

Therefore, courts must examine the particular rule and the governing conflict-of-laws methodology.

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Public Policy and Statutes of Limitation

Statutes of limitation provide a useful illustration of the interaction between substance, procedure, and public policy.

Different jurisdictions may have substantially different limitation periods.

Historically, limitation rules were often treated as procedural.

Modern conflict-of-laws approaches may treat them differently depending on the jurisdiction and context.

A forum may have a strong policy favoring a particular limitation period, but that does not automatically establish a public-policy exception.

The court must first determine how the forum characterizes the limitation rule and what its own conflict-of-laws methodology requires.

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Public Policy and Criminal Law

Criminal law presents special difficulties.

A state ordinarily has a strong interest in regulating criminal conduct occurring within its territory.

A U.S. court is therefore generally unlikely to apply another jurisdiction’s criminal law in the ordinary manner of applying foreign civil law.

Criminal statutes are territorial and sovereign in nature.

However, international disputes can still raise related questions concerning foreign conduct, extraterritorial statutes, and recognition of foreign legal consequences.

In such cases, the relevant analysis may involve federal law, treaties, constitutional principles, or international comity rather than simply the ordinary public-policy exception used in private civil litigation.

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Public Policy and Extraterritoriality

Public policy can also intersect with the problem of extraterritoriality.

A jurisdiction may have a strong interest in regulating conduct within its territory but a much weaker claim to regulate conduct occurring entirely elsewhere.

Courts may therefore consider whether applying local law to foreign conduct would improperly extend the forum’s law beyond its legitimate territorial reach.

International comity can reinforce this restraint.

The Supreme Court’s discussion in Hartford Fire Insurance Co. v. California illustrates the distinction between judicial comity and the broader principles governing the territorial reach of substantive law.

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Public Policy and International Commerce

International commerce makes the public policy exception particularly significant.

Businesses need predictable rules.

A company entering an international transaction must be able to estimate:

• which law will govern;
• whether its choice-of-law clause will be respected;
• whether mandatory rules may override that choice;
• and whether a court might later invoke public policy.

An excessively broad public-policy exception could make international contracts unpredictable.

An excessively narrow exception could force courts to apply foreign rules that fundamentally contradict the forum’s most important legal principles.

The challenge is therefore to maintain an appropriate balance between:

predictability and sovereignty,

party autonomy and mandatory law,

international comity and domestic public policy.

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Public Policy and the Protection of Fundamental Values

The strongest cases for a public-policy exception generally involve values that the forum regards as fundamental rather than ordinary policy preferences.

These might include policies concerning:

• fundamental constitutional rights;
• basic principles of justice;
• serious violations of statutory protections;
• essential protections of vulnerable persons;
• or conduct that the forum considers deeply incompatible with its legal order.

But even here, the analysis must be disciplined.

A court should identify the actual legal policy rather than rely on abstract statements that the foreign rule is “unfair” or “different.”

The stronger the exception, the more precisely the court should identify the policy it is protecting.

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Public Policy Should Be Grounded in Positive Law

Courts are generally on firmer ground when a claimed public policy can be identified through:

• a statute;
• constitutional provision;
• regulation;
• established judicial doctrine;
• or another authoritative source of law.

A generalized moral disagreement with foreign law is ordinarily a weaker basis.

The Supreme Court’s jurisprudence concerning public policy in other contexts has emphasized the narrowness of public-policy exceptions and the importance of grounding them in identifiable legal policy rather than allowing courts to create broad exceptions based on generalized notions of desirability.

This principle helps prevent the public policy doctrine from becoming unpredictable.

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The Difference Between “Unfair” and “Contrary to Public Policy”

A foreign rule may produce a result that seems unfair to one party.

That does not necessarily mean that it violates public policy.

Courts must distinguish:

“I think this result is unfair”

from

“Applying this law would violate a fundamental policy of this jurisdiction.”

The first is a personal or case-specific assessment.

The second is a legal conclusion grounded in the policies of the forum’s legal system.

Conflict-of-laws doctrine requires the latter.

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Public Policy and Judicial Restraint

The public policy exception requires judicial restraint because invoking it can effectively displace the law of another jurisdiction.

The court should therefore ask:

1. Is there actually a conflict?
2. Which law would ordinarily apply?
3. What specific public policy is implicated?
4. Is that policy fundamental?
5. Does applying the foreign rule actually undermine the policy?
6. What relationship does the forum have to the dispute?
7. What interests does the other jurisdiction have?
8. Would refusing to apply the foreign law interfere with justified expectations?
9. Is there federal law, constitutional law, or a treaty controlling the issue?
10. Is the dispute about choice of law or recognition of a judgment?

These questions help prevent the exception from becoming a shortcut.

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A Practical Example

Imagine that a corporation headquartered in State A enters into a contract with a corporation headquartered in State B.

The contract is negotiated in State A, performed largely in State B, and contains a clause selecting State A law.

A dispute later arises in State B.

State B has a statute designed to protect businesses operating within its territory. The defendant argues that applying State A law would defeat an important policy embodied in that statute.

The court should not immediately reject the choice-of-law provision.

Instead, it may ask:

• Is the choice-of-law clause valid?
• What does State B’s conflict-of-laws doctrine require?
• What relationship does State A have to the transaction?
• What relationship does State B have?
• Is State B’s policy fundamental?
• Is State A’s law genuinely inconsistent with that policy?
• Does State B have a materially greater interest in the particular issue?
• What expectations did the parties have?

Only after answering those questions can the court determine whether the public policy exception should apply.

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A Practical International Example

Suppose a contract between an American company and a foreign company selects the law of Country A.

The transaction has substantial connections to Country A.

A dispute is later brought in a U.S. court.

Country A’s law permits a contractual provision that would not be permitted under the law of the U.S. forum.

The American party argues:

“This provision violates our state’s public policy, so Country A’s law should not apply.”

That argument is incomplete.

The court must determine whether the American policy is sufficiently fundamental and whether the applicable conflict-of-laws rules permit the forum to displace Country A’s law.

The mere fact that American law is more protective does not automatically establish a public-policy exception.

International commerce depends upon the ability of courts to recognize legitimate differences between legal systems.

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Public Policy and Recognition of Foreign Divorce Decrees

Family disputes illustrate another distinction.

A U.S. court may be asked to recognize a divorce decree entered in another country.

The court may consider:

• whether the foreign court had jurisdiction;
• whether the parties received adequate notice;
• whether the proceeding was fundamentally fair;
• whether recognition would violate an important public policy;
• and whether the decree is final.

Public policy can therefore be one factor in recognition.

But recognition of a foreign judgment is analytically different from deciding which law governs an underlying dispute.

The court should not collapse these doctrines into one generalized “public policy” inquiry.

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Public Policy and Foreign Judgments Versus Foreign Law

This distinction is worth emphasizing.

Applying foreign law

The court decides:

“Country A’s law governs this issue.”

The court then determines what Country A’s law provides.

Recognizing a foreign judgment

The court decides:

“Country A’s court has already entered a judgment. Should that judgment be given legal effect here?”

Enforcing a foreign judgment

The court decides:

“The foreign judgment is entitled to recognition. What mechanisms can be used to enforce it here?”

Public policy can arise in all three contexts, but the legal framework is different in each.

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Public Policy and Sister-State Judgments

The distinction is particularly important under the Full Faith and Credit Clause.

A state cannot ordinarily refuse to recognize a valid sister-state judgment merely because the judgment conflicts with the forum state’s public policy.

In Baker v. General Motors Corp., the Supreme Court rejected the notion of a general public-policy exception to the constitutional obligation of full faith and credit for judgments.

This means that the public-policy doctrine has substantially less freedom of operation after a valid sister-state judgment has already been entered.

The constitutional structure of federalism requires states to recognize the judgments of their sister states within the constitutional limits governing jurisdiction and finality.

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Public Policy and Sister-State Laws

The situation can be different when the court is choosing between the laws of two states before judgment has been entered.

In that context, the forum’s public policy may be relevant to the choice-of-law analysis.

The Supreme Court has recognized that a forum state may be guided by its own public policy in determining which law should govern a controversy.

But the Constitution imposes limits on the extent to which one state can disregard another state’s legitimate interests.

The Full Faith and Credit Clause therefore creates a constitutional framework within which interstate conflict-of-laws decisions operate.

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Public Policy and Foreign States

Foreign-country disputes are different again.

The United States is a federal nation composed of states, but a foreign country is a separate sovereign.

Consequently, the constitutional relationship between the states does not map perfectly onto international conflicts.

The public policy exception may therefore operate with greater flexibility in international cases, particularly when courts are deciding whether to apply foreign law or recognize foreign judgments.

Nevertheless, international comity counsels against casually rejecting foreign law.

The existence of a different foreign legal rule is normally not enough.

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Public Policy and the Sovereignty of Other Nations

A U.S. court applying foreign law can demonstrate respect for another sovereign’s legal authority.

Conversely, refusing to apply foreign law on weak public-policy grounds can create unnecessary international friction.

This is why international conflict-of-laws doctrine attempts to balance domestic interests with international comity.

A court must protect the fundamental policies of its own legal system without treating every difference in foreign law as unacceptable.

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The Public Policy Exception as a Safety Valve

The best way to understand the doctrine is as a safety valve.

Conflict-of-laws rules provide general methods for selecting governing law.

But general rules cannot anticipate every possible international or interstate dispute.

Occasionally, mechanical application of a choice-of-law rule could produce a result that is fundamentally incompatible with the forum’s legal order.

The public policy exception provides a mechanism for addressing that extraordinary situation.

But because it is an exception, it should not swallow the rule.

A useful conceptual formula is:

Choice of law establishes the ordinary rule.

Public policy provides a narrow escape when the ordinary rule would produce a fundamental conflict with the forum’s legal order.

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A Step-by-Step Public Policy Analysis

When analyzing a potential public-policy exception, a court can proceed conceptually through the following sequence.

Step One: Identify the Actual Conflict

Determine whether the laws of the competing jurisdictions would produce materially different results.

If they would not, there may be no true conflict.

Step Two: Determine the Ordinary Choice of Law

Apply the forum’s applicable conflict-of-laws methodology.

Step Three: Identify the Claimed Public Policy

The party invoking the exception should identify a specific policy rather than merely asserting that the foreign rule is undesirable.

Step Four: Determine Whether the Policy Is Fundamental

Ask whether the policy represents a sufficiently important principle of the forum’s legal system.

Step Five: Determine Whether the Foreign Rule Actually Conflicts With It

A difference in legal terminology or outcome is not necessarily a genuine policy conflict.

Step Six: Examine the Forum’s Connection

Consider the forum’s relationship to the parties, conduct, transaction, injury, or legal relationship.

Step Seven: Consider Competing Interests

Examine the interests and policies of the jurisdiction whose law would otherwise apply.

Step Eight: Consider Expectations

Especially in contract cases, determine whether the parties reasonably relied on a particular legal system.

Step Nine: Check for Controlling Federal Law

Determine whether federal statutes, constitutional provisions, treaties, or specialized federal doctrines control.

Step Ten: Apply the Narrowest Appropriate Exception

If the exception is justified, the court should displace the foreign law only to the extent necessary to protect the identified policy.

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Common Mistakes About the Public Policy Exception

Mistake 1: “Different Law Means Public Policy”

It does not.

Legal systems routinely have different rules.

Mistake 2: “The Forum Always Gets to Apply Its Own Law”

It does not.

Conflict-of-laws doctrine exists precisely because another jurisdiction’s law may govern.

Mistake 3: “Public Policy Is Whatever the Judge Thinks Is Fair”

It is not.

Public policy should be grounded in the legal system’s recognized policies.

Mistake 4: “Any Statute Creates a Fundamental Policy”

Not necessarily.

The significance and purpose of the statute matter.

Mistake 5: “Public Policy Can Defeat Any Foreign Judgment”

Not necessarily, and this is especially wrong for sister-state judgments because of the Full Faith and Credit Clause.

Mistake 6: “Public Policy Is the Same in Every State”

It is not.

Each jurisdiction may define and apply its public-policy principles differently.

Mistake 7: “The Public Policy Exception Is the Same in Every Area of Law”

It is not.

Federal maritime law, arbitration, family law, international judgments, contracts, and other fields may have specialized doctrines.

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Public Policy and Federalism

Within the United States, public policy must be balanced against the constitutional structure of federalism.

Each state has authority to develop its own law.

But the states also exist within a national legal system.

The Full Faith and Credit Clause, the Supremacy Clause, federal statutes, and constitutional rights all place limits on state autonomy.

This means that a state cannot use public policy as a general mechanism for insulating itself from the legal consequences of the federal constitutional system.

The doctrine therefore operates within a hierarchy:

U.S. Constitution and valid federal law

↓

Applicable state conflict-of-laws rules

↓

Selection of governing substantive law

↓

Possible public-policy limitation, where legally permitted

The exact ordering becomes more complicated in specialized federal fields, but the general principle remains important.

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Public Policy and Legal Certainty

A well-functioning legal system must balance two competing goals.

The first is legal certainty.

Individuals and businesses need to know what law governs their conduct.

The second is legal integrity.

Courts should not be required to apply a rule that fundamentally contradicts the most important policies of the legal system.

An excessively broad public-policy exception threatens certainty.

An excessively narrow exception can threaten the integrity of the forum’s legal order.

The doctrine therefore exists in the space between these two concerns.

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Public Policy in International Legal Practice

For international lawyers, the public policy exception has practical significance beyond theoretical conflict-of-laws analysis.

It can affect:

• international contracts;
• commercial transactions;
• foreign judgments;
• family relationships;
• arbitration;
• insurance;
• employment;
• financial arrangements;
• corporate disputes;
• and cross-border property.

Before relying on a foreign choice-of-law clause, a party should therefore ask not only:

“Which law does the contract select?”

but also:

“Could mandatory or fundamental policies of another jurisdiction limit the operation of that choice?”

Similarly, before relying on a foreign judgment, a party should determine the applicable recognition framework and identify any public-policy limitations.

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Public Policy Is a Narrow Doctrine, Not a Shortcut

The most important principle to remember is that public policy is an exception to ordinary conflict-of-laws analysis, not a replacement for it.

A court should first determine the applicable conflict-of-laws framework.

It should then identify the law that would ordinarily govern.

Only after that analysis should it consider whether applying that law would create a sufficiently serious conflict with the forum’s fundamental policy.

This disciplined approach protects both sides of the conflict.

It respects the legitimate authority of other jurisdictions while preserving the forum’s ability to protect its most important legal principles.

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Key Takeaways

• The public policy exception allows a court, in appropriate circumstances, to refuse to apply otherwise applicable foreign or out-of-state law when doing so would violate a fundamental policy of the forum.
• The exception is narrow and should not be confused with a general preference for forum law.
• A difference between two jurisdictions’ laws does not automatically create a public-policy conflict.
• The court should first determine which law ordinarily governs before considering whether public policy justifies an exception.
• The claimed policy should generally be identifiable in the forum’s legal system rather than based merely on a judge’s personal sense of fairness.
• The strength of the forum’s policy and the interests of the competing jurisdiction both matter.
• Public policy can be particularly important in contracts, family law, employment, property, and international disputes.
• Contractual choice-of-law provisions are important because they promote predictability, but they may be subject to mandatory rules and applicable public-policy limitations.
• The Supreme Court’s 2024 Great Lakes Insurance decision demonstrates that specialized federal fields such as maritime law may apply their own choice-of-law rules and narrow exceptions.
• Public policy is different from international comity, although the two principles interact.
• Public policy cannot override the U.S. Constitution or valid federal law.
• The public-policy analysis applicable to foreign law is different from the constitutional Full Faith and Credit framework applicable to sister-state judgments.
• There is no general public-policy exception allowing a state to disregard a valid sister-state judgment.
• Foreign-country judgments raise different recognition and comity questions because foreign countries are not sister states within the constitutional federal system.
• The exception should be used cautiously because an overly broad doctrine would undermine predictability in interstate and international commerce.

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Frequently Asked Questions

What is the public policy exception in conflict of laws?

It is a doctrine that may permit a court to refuse to apply otherwise applicable foreign or out-of-state law when applying that law would fundamentally conflict with an important public policy of the forum.

Does a difference between state laws automatically trigger the exception?

No. States routinely have different laws. The difference generally must involve a sufficiently fundamental policy conflict before the exception becomes relevant.

Can a court always apply its own state’s law because of public policy?

No. The court must first apply the relevant conflict-of-laws methodology. Public policy is a limited exception, not a general preference for forum law.

What is a “fundamental policy”?

It is an important policy that the forum’s legal system treats as sufficiently significant to justify refusing to apply otherwise governing law. The precise definition varies by jurisdiction and context.

Can public policy override a contractual choice-of-law clause?

Sometimes, depending on the applicable conflict-of-laws doctrine. Courts generally respect valid choice-of-law provisions, particularly in commercial transactions, but mandatory rules and fundamental policies may limit their operation.

Does public policy apply to foreign law?

Yes. A U.S. court may consider whether applying foreign law would violate a sufficiently fundamental policy of the forum.

Does public policy apply to foreign judgments?

It can. Recognition of foreign-country judgments may involve public-policy considerations, depending upon the applicable state or federal recognition framework.

Can public policy be used to refuse a sister-state judgment?

Generally, no. The Full Faith and Credit Clause imposes constitutional obligations concerning valid sister-state judgments, and the Supreme Court has rejected a general public-policy exception to that obligation.

Is public policy the same as international comity?

No. Comity generally reflects respect for the laws and judicial institutions of other jurisdictions. Public policy can operate as a limitation when applying another jurisdiction’s law would fundamentally conflict with the forum’s legal principles.

Can a state invoke public policy against federal law?

No. State public policy cannot override the U.S. Constitution, valid federal statutes, or other controlling federal law.

Does the public policy exception apply identically in every state?

No. Conflict-of-laws rules are substantially state-specific, and different states may use different approaches to public policy and choice of law.

Why is the exception deliberately narrow?

Because an overly broad exception would defeat the purpose of conflict-of-laws doctrine. If every jurisdiction could reject foreign law whenever it preferred its own policy, there would be little predictability in interstate or international transactions.

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Conclusion

The public policy exception is one of the most important limitations within conflict-of-laws doctrine because it recognizes that respect for another jurisdiction’s law cannot always be absolute.

Yet the doctrine must be used carefully.

The fact that another jurisdiction has a different law does not mean that its law is contrary to public policy. Nor does the fact that the forum would have reached a different result justify disregarding the ordinary choice-of-law rules.

The real question is whether applying the otherwise governing law would undermine a fundamental policy of the forum in circumstances where the forum’s legal system is entitled to protect that policy.

This requires a careful examination of the competing jurisdictions, the purposes of their laws, the connections between the dispute and each jurisdiction, the expectations of the parties, and the applicable constitutional and federal framework.

The doctrine becomes even more important when distinguishing among different categories of conflicts. Public policy may influence the selection of substantive law, but it does not create a general escape from the constitutional obligation to recognize valid sister-state judgments. Foreign-country judgments operate under a different recognition framework. Specialized federal areas, such as maritime law and international arbitration, may impose still different rules.

Ultimately, the public policy exception expresses a fundamental idea of conflict of laws:

A court should respect the legitimate law of another jurisdiction, but it need not sacrifice the fundamental principles of its own legal order merely because a choice-of-law rule points elsewhere.

The difficulty—and the art—of conflict-of-laws adjudication lies in determining when that point has actually been reached.