Evidence and the Administrative Record

Evidence and the Administrative Record

Introduction

Administrative agencies often make decisions that affect licenses, benefits, permits, professional status, regulatory obligations, government contracts, and other important legal interests. When an agency must decide a disputed matter, it needs a factual basis for its decision.

That factual basis comes from evidence.

The evidence may consist of documents, testimony, expert opinions, government records, scientific data, photographs, business records, inspection reports, applications, correspondence, or other information relevant to the dispute. In formal administrative adjudication, the evidence is collected and preserved as part of an administrative record.

The administrative record is important because an agency decision is not supposed to rest on unexplained facts, undisclosed material, or information that the parties had no meaningful opportunity to address. The record provides the factual and procedural foundation for the agency’s decision and, when judicial review is available, gives the reviewing court the materials it needs to evaluate that decision.

Under the federal Administrative Procedure Act (APA), formal adjudication is governed principally by 5 U.S.C. §§ 554, 556, and 557 when the statutory requirements for formal adjudication are satisfied. The APA addresses the reception of evidence, the conduct of hearings, the record, and the decision-making process.

For a useful overview of the relationship between evidence and administrative hearings, see Cornell Law School Legal Information Institute’s explanation of administrative hearings.

Understanding evidence and the administrative record therefore requires understanding more than courtroom rules of evidence. Administrative proceedings often operate with greater procedural flexibility than ordinary civil trials, although the precise rules vary considerably by agency, statute, type of proceeding, and constitutional requirements.

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1. What Is Evidence in Administrative Adjudication?

Evidence is information offered to establish, clarify, or challenge a fact relevant to an administrative decision.

In ordinary litigation, evidence may include testimony, documents, photographs, recordings, physical objects, expert opinions, and other information. The basic purpose is the same in administrative proceedings: evidence helps the decision-maker determine what happened and what legal consequences should follow.

For example, imagine that a federal agency is deciding whether a regulated company violated an environmental requirement.

The agency might rely on:

• inspection reports;
• photographs;
• laboratory results;
• company records;
• employee testimony;
• expert testimony;
• correspondence;
• monitoring data;
• technical reports; and
• other documentary evidence.

The ALJ or other authorized adjudicator must determine what evidence may be considered and what weight it deserves.

The concept of evidence is therefore closely connected to the distinction between fact-finding and legal interpretation.

Evidence primarily helps establish facts.

Law determines what those facts mean legally.

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2. Administrative Evidence Is Not Always Governed by the Federal Rules of Evidence

One of the most important points for students of administrative law is that administrative hearings do not necessarily operate under exactly the same evidentiary rules as federal courts.

A judicial trial is ordinarily governed by the Federal Rules of Evidence in federal court. Administrative proceedings, however, may have their own evidentiary rules established by statute, regulation, agency practice, or the requirements of the particular proceeding.

Some administrative proceedings use relatively formal evidentiary procedures. Others are substantially more flexible.

For example, an agency’s regulations may permit an ALJ to receive evidence that would not necessarily be admissible under the Federal Rules of Evidence, provided that the evidence is relevant, material, competent, and sufficiently reliable.

The exact standard depends on the proceeding.

This is why lawyers should not assume that:

“Not admissible in federal court” automatically means “not admissible before an administrative agency.”

The opposite is also important. Procedural flexibility does not mean that agencies may rely on anything whatsoever.

Due process, governing statutes, agency regulations, and principles of reasoned decision-making continue to impose limits.

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3. What Is the Administrative Record?

The administrative record is the collection of materials that constitutes the official record of an administrative proceeding and provides the basis for the agency’s decision.

In a formal adjudication, the record may include:

• pleadings;
• applications;
• notices;
• motions;
• documentary exhibits;
• testimony;
• hearing transcripts;
• expert reports;
• written submissions;
• objections;
• evidentiary rulings;
• procedural orders;
• findings of fact;
• conclusions of law;
• proposed decisions;
• initial decisions;
• agency review materials; and
• the final agency decision.

The precise contents vary according to the agency and proceeding.

The federal APA specifically provides that, in proceedings governed by §556, the transcript of testimony and exhibits, together with papers and requests filed in the proceeding, constitute the record for decision under §557.

This illustrates an important principle:

The administrative record is not simply a pile of documents. It is the formal evidentiary and procedural history of the proceeding.

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4. Why the Administrative Record Matters

The administrative record performs several functions.

First, it supports the agency’s decision

An agency should be able to identify the evidence supporting its factual conclusions.

If an agency concludes that a company violated a regulation, the record should contain evidence supporting that conclusion.

Second, it protects the parties

A party needs to know what evidence is being considered and, where the applicable procedures provide for it, have an opportunity to respond.

A decision based on undisclosed material can raise serious procedural and due-process concerns.

Third, it creates transparency

The record allows the parties and reviewing courts to understand how the agency reached its decision.

Fourth, it facilitates judicial review

When a court reviews agency action, the administrative record often becomes the central factual foundation for that review.

A reviewing court generally does not conduct the administrative proceeding again from the beginning.

Instead, it examines the agency’s action in light of the governing law and the materials properly before the agency.

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5. Types of Evidence in Administrative Proceedings

Administrative evidence can take many forms.

Documentary Evidence

Documents are among the most common forms of administrative evidence.

They may include:

• contracts;
• applications;
• licenses;
• permits;
• invoices;
• financial records;
• correspondence;
• emails;
• inspection reports;
• photographs;
• laboratory reports;
• medical records;
• government records;
• business records; and
• agency files.

Because agencies frequently regulate highly technical areas, documentary evidence may be particularly important.

A licensing dispute, for example, may depend almost entirely on written records rather than eyewitness testimony.

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6. Testimony and Witnesses

Administrative proceedings may also involve witnesses.

A witness may testify about:

• events personally observed;
• agency procedures;
• business operations;
• technical matters;
• communications;
• compliance efforts; or
• other disputed facts.

In formal proceedings, witnesses may testify under oath or affirmation, and parties may have opportunities for examination and cross-examination.

Cornell’s description of formal adjudication explains that these proceedings can involve trial-type procedures in which parties present evidence and cross-examine witnesses.

Cross-examination can be especially important where credibility is disputed.

For example, suppose an inspector claims that a regulated facility was operating a machine in violation of a safety requirement.

The company disputes the inspector’s observations.

Questions might concern:

• where the inspector was standing;
• what the inspector actually observed;
• whether the equipment was operating;
• what measurements were taken;
• whether the inspection followed agency procedures; and
• whether photographs or other records confirm the testimony.

The administrative record preserves the evidence needed to evaluate these disputes.

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7. Expert Evidence

Administrative agencies frequently deal with subjects requiring specialized knowledge.

Examples include:

• environmental science;
• medicine;
• engineering;
• economics;
• financial regulation;
• aviation;
• telecommunications;
• pharmaceuticals;
• occupational safety; and
• energy regulation.

Expert evidence can therefore play a major role.

An expert might provide:

• an expert report;
• scientific analysis;
• technical calculations;
• statistical evidence;
• professional opinion; or
• testimony explaining specialized information.

But expertise does not automatically make an opinion persuasive.

The decision-maker may consider:

• the expert’s qualifications;
• methodology;
• underlying data;
• assumptions;
• consistency with other evidence;
• reliability; and
• the reasoning supporting the conclusion.

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8. Government Records and Agency Data

Administrative agencies frequently possess information that private litigants may not have.

Examples include:

• inspection databases;
• licensing records;
• enforcement histories;
• regulatory filings;
• scientific measurements;
• statistical databases;
• monitoring information; and
• prior agency records.

Such information may become relevant evidence.

However, the existence of agency-generated information does not automatically resolve the factual question.

The reliability, relevance, completeness, and legal significance of the information still matter.

An agency should be able to explain how important factual conclusions were derived from the information before it.

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9. Relevance and Materiality

Evidence generally needs to have a meaningful connection to the issues being decided.

Relevance asks whether evidence tends to make a fact of consequence more or less probable.

Materiality concerns whether the fact matters to the legal or factual issues in the proceeding.

For example, imagine that an agency is determining whether a company violated a particular emissions standard.

Evidence about the company’s employee parking arrangements might be irrelevant.

Evidence concerning emissions measurements, testing procedures, and operating conditions may be highly relevant.

Administrative proceedings may use somewhat more flexible evidentiary rules than courts, but relevance remains fundamental.

Evidence should help the decision-maker resolve the issues actually presented.

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10. Reliability and Credibility

Evidence does not become persuasive merely because it has been admitted.

The decision-maker must often determine how much weight to give it.

Consider two competing pieces of evidence.

One is a contemporaneous business record created automatically during ordinary operations.

The other is a witness’s recollection of an event that occurred several years earlier.

Both might be considered.

But the decision-maker may reasonably assign them different weight depending on the circumstances.

Credibility becomes particularly important when witnesses disagree.

An ALJ may consider:

• consistency;
• opportunity to observe;
• corroboration;
• internal contradictions;
• documentary support;
• bias;
• motive;
• expertise; and
• overall reliability.

The administrative decision should explain the factual conclusions sufficiently to allow the parties and reviewing court to understand the reasoning.

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11. Hearsay and Other Evidentiary Rules

Hearsay can arise frequently in administrative proceedings.

A witness might attempt to testify about what another person said.

A document might contain statements made by someone who is not present.

In ordinary court proceedings, the Federal Rules of Evidence contain detailed hearsay rules and exceptions.

Administrative proceedings can be different.

Some agencies permit consideration of hearsay or other evidence that might face greater restrictions in federal court, particularly where the evidence is sufficiently reliable and relevant.

But the important question is not simply:

“Is this technically hearsay?”

The broader questions may include:

• Is it relevant?
• Is it reliable?
• Is it sufficiently probative?
• Does the governing statute permit its consideration?
• Does agency regulation impose additional requirements?
• Would relying on it undermine procedural fairness?

The answer depends on the proceeding.

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12. Discovery and Disclosure of Evidence

Administrative proceedings may provide mechanisms for exchanging information before a hearing.

Depending on the agency and applicable rules, these may include:

• document requests;
• interrogatories;
• subpoenas;
• depositions;
• prehearing exchanges;
• disclosure requirements; and
• requests for admissions.

Not every administrative proceeding provides the same discovery rights available in civil litigation.

Indeed, administrative procedures can vary dramatically.

Some proceedings are highly structured. Others are comparatively informal.

A lawyer therefore must identify the specific statute, regulations, and procedural rules governing the agency rather than assuming that the Federal Rules of Civil Procedure apply.

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13. Late-Submitted Evidence

Timing can matter.

Administrative procedures may establish deadlines for submitting evidence before a hearing or decision.

For example, a particular agency may require documentary evidence to be submitted a certain number of days before a hearing.

Failure to comply may result in the evidence being excluded or given less weight, although exceptions may exist.

The Social Security regulations, for example, establish deadlines for submitting certain written evidence to an ALJ while also recognizing circumstances that can justify late submission.

This illustrates a broader principle:

Evidence must be both substantively useful and procedurally usable.

A potentially important document may accomplish little if it is submitted in a manner that violates the applicable procedural rules.

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14. Cross-Examination and Testing the Evidence

Cross-examination is one of the principal mechanisms for testing disputed evidence.

It allows a party to challenge:

• accuracy;
• credibility;
• methodology;
• assumptions;
• memory;
• bias;
• qualifications;
• inconsistencies; and
• conclusions.

Formal administrative adjudication can provide trial-like opportunities for cross-examination.

But the scope and availability of cross-examination depend on the proceeding.

An administrative lawyer should therefore determine what the governing law permits rather than assuming that every administrative hearing contains identical confrontation procedures.

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15. Ex Parte Information and Communications

A particularly important problem arises when an agency decision-maker relies on information that was not properly presented to the parties.

Suppose an ALJ is deciding whether a company violated a safety requirement.

During the proceeding, the parties present competing evidence.

But the decision-maker privately obtains an additional technical report and relies on it without giving the parties an opportunity to address it.

That creates a serious procedural concern.

The administrative process depends upon a meaningful relationship between:

evidence → opportunity to respond → findings → decision.

When important information enters the decision-making process outside the procedures governing the case, questions may arise concerning fairness, ex parte communications, and the integrity of the record.

The precise rules governing such communications vary by statute and proceeding.

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16. The Administrative Record as the Basis for Decision

The administrative record is especially important because the agency’s decision should be grounded in the record.

Under 5 U.S.C. §557, decisions in formal adjudication must include findings and conclusions, together with the reasons or basis for them, on material issues of fact, law, or discretion presented on the record.

This creates an important relationship:

Evidence provides the factual foundation.

The record preserves that foundation.

Findings explain what the agency concluded from it.

The final decision applies the governing law to those findings.

This structure helps prevent unexplained decision-making.

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17. Findings of Fact and the Evidence Supporting Them

An administrative decision commonly separates factual findings from legal conclusions.

For example:

Finding of Fact

The agency may find that a regulated company discharged a particular substance on a specified date.

Legal Conclusion

The agency may conclude that the discharge violated a particular statutory or regulatory requirement.

The first conclusion requires factual evidence.

The second requires legal analysis.

The distinction matters because a reviewing court may evaluate factual findings differently from legal interpretations.

The agency cannot simply announce:

“The company violated the law.”

It generally must explain the factual and legal path leading to that conclusion.

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18. The Record and Agency Decision-Making

A well-developed administrative record allows a reviewing court to understand:

1. what evidence the agency received;
2. what factual disputes existed;
3. what findings the agency made;
4. what legal questions it considered;
5. what reasoning it adopted; and
6. why it reached its ultimate decision.

The record therefore acts as a bridge between administrative proceedings and judicial review.

Without an adequate record, meaningful review can become difficult.

This does not mean that every administrative decision must contain an enormous factual discussion.

The required level of explanation depends on the applicable law and the nature of the decision.

But significant decisions generally must provide enough reasoning to show that the agency actually addressed the material issues before it.

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19. Judicial Review of the Administrative Record

When agency action reaches federal court, the administrative record often becomes central to the judicial review process.

The reviewing court may ask whether the agency:

• acted within its statutory authority;
• followed required procedures;
• considered the relevant factors;
• supported factual findings with adequate evidence where the applicable standard requires it;
• explained its reasoning; and
• complied with constitutional requirements.

The court ordinarily is not simply substituting its preferred policy judgment for that of the agency.

Instead, judicial review focuses on whether the agency acted lawfully.

For factual determinations subject to substantial-evidence review, the court examines the existing administrative record to determine whether it contains sufficient evidence to support the agency’s findings. Cornell’s Wex explains substantial evidence as evidence that a reasonable mind might accept as adequate to support a conclusion.

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20. Substantial Evidence and the Record

The substantial evidence standard is particularly important in administrative law.

It is a deferential standard of review.

The question is not necessarily whether the reviewing judge would have reached exactly the same factual conclusion.

Instead, the question is whether the evidence in the record provides sufficient support for the agency’s factual determination under the applicable standard.

This distinction is important.

Imagine that the record contains evidence supporting both sides of a factual dispute.

The reviewing court may still uphold the agency’s determination if the evidence supporting the agency’s conclusion satisfies the applicable substantial-evidence standard.

The existence of conflicting evidence does not automatically mean that the agency’s finding must be overturned.

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21. Arbitrary and Capricious Review and the Record

The administrative record is also important when a court reviews agency action under the arbitrary-and-capricious standard.

The court may examine whether the agency:

• considered the relevant factors;
• considered important aspects of the problem;
• relied on appropriate evidence;
• adequately explained its decision;
• addressed significant counterarguments; and
• avoided an unexplained departure from prior policy.

The record therefore matters not only because it contains evidence.

It also reveals the agency’s reasoning process.

An agency may possess substantial amounts of information, but the existence of information alone does not necessarily establish reasoned decision-making.

The agency must connect the relevant evidence to its conclusions.

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22. Evidence, the Record, and Statutory Interpretation After Loper Bright

The administrative record must also be distinguished from the legal question of what a statute means.

Following Loper Bright Enterprises v. Raimondo, courts do not defer to agencies merely because a statute is ambiguous.

The Supreme Court held in 2024 that courts must exercise their own independent judgment when interpreting statutes, while respecting valid congressional delegations of authority.

This distinction is crucial.

Suppose an agency interprets a statutory term.

The administrative record may contain:

• agency analysis;
• technical information;
• factual findings;
• economic studies;
• public comments or submissions where relevant;
• historical information; and
• other materials.

Those materials may be highly relevant to understanding the factual and regulatory context.

But the ultimate judicial interpretation of an ambiguous statutory provision is not automatically controlled by the agency’s preferred interpretation.

Evidence informs factual questions.

The record preserves the administrative process.

The court independently interprets the governing statute within the limits established by law.

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23. Can a Court Consider Evidence Outside the Administrative Record?

As a general principle, judicial review of agency action is ordinarily focused on the materials that properly formed the administrative record.

But the subject is more complicated than a simple “record-only” rule.

Different statutes provide different review mechanisms.

Different types of agency action raise different evidentiary questions.

And certain circumstances may justify consideration of material outside the ordinary record.

For example, special statutory review procedures may authorize additional evidence. In Kappos v. Hyatt, the Supreme Court considered a statutory patent-review proceeding in which the district court could consider new evidence under the particular statutory framework involved.

The lesson is therefore:

The scope of judicial review must be determined from the governing statute and the nature of the agency proceeding.

A lawyer should not assume that the administrative-record principle operates identically in every case.

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24. The Record Is More Than the Evidence

It is tempting to think of the administrative record as simply a collection of exhibits.

It is broader than that.

The record can document the procedural history of the case as well as its evidentiary substance.

It may show:

• what claims were presented;
• what evidence was offered;
• what evidence was excluded;
• what objections were made;
• what rulings were issued;
• what arguments were preserved;
• what factual findings were made; and
• how the final decision was reached.

For example, one federal regulation governing a particular administrative proceeding expressly defines the record to include evidence, proceedings, prehearing and posthearing conferences, admitted evidence, and even certain evidence that was excluded or not considered.

The exact composition of the record varies, but the underlying principle is important:

The record tells the legal story of the proceeding.

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25. Preserving the Record

For lawyers, one of the most practical lessons of administrative litigation is that preservation matters.

A lawyer should consider whether important issues have been properly placed in the record.

This can include:

• submitting relevant evidence;
• making timely objections;
• challenging improper evidentiary rulings;
• requesting necessary findings;
• responding to adverse evidence;
• preserving legal arguments;
• identifying procedural errors; and
• ensuring that important documents are properly included.

An issue that never appears in the administrative record may become much harder to raise later.

The exact preservation requirements vary, but the general principle is universal:

Do not assume that a reviewing court will reconstruct an argument that was never properly presented to the agency.

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26. A Practical Example

Consider a professional licensing agency deciding whether to suspend a physician’s license.

The agency alleges that the physician violated professional standards.

The administrative proceeding contains:

• patient records;
• expert testimony;
• medical reports;
• communications between the physician and the agency;
• inspection materials;
• testimony from witnesses;
• written submissions;
• objections to evidence; and
• the ALJ’s findings.

The physician argues that the expert report relied on incomplete information.

The agency argues that the report is supported by independent records.

The ALJ must evaluate the evidence.

The ALJ might find that:

1. certain factual events occurred;
2. particular testimony is credible;
3. a particular expert methodology is reliable;
4. some evidence deserves little weight; and
5. the established facts constitute a violation under the governing statute or regulation.

Those findings become part of the administrative decision and record.

If the case later reaches a reviewing court, the court can examine the record to determine whether the agency acted within its lawful authority and whether the decision satisfies the applicable standard of judicial review.

The court is not simply conducting the original licensing hearing again.

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27. Evidence vs. Administrative Record

The distinction can be summarized simply:

Evidence	Administrative Record
Information used to establish facts	The official collection of materials documenting the proceeding
May include testimony, documents, reports, and data	Includes evidence plus procedural and decision-making materials
Helps establish what happened	Preserves what happened during the proceeding
Evaluated for relevance, reliability, and weight	Used to understand and review the agency’s decision
Primarily factual in function	Both factual and procedural in function

The two concepts are therefore related but not identical.

Evidence is part of the substance of the case.

The administrative record is the preserved framework of the case.

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28. A Lawyer’s Practical Checklist

When handling an administrative adjudication, counsel should consider the following:

Before the hearing

• Identify the governing statute.
• Identify the agency’s procedural regulations.
• Determine what evidence must be disclosed.
• Review applicable deadlines.
• Obtain relevant agency records.
• Identify potential witnesses.
• Evaluate expert evidence.
• Determine whether discovery is available.

During the proceeding

• Introduce important evidence properly.
• Object where appropriate.
• Challenge unreliable evidence.
• Cross-examine witnesses when permitted.
• Preserve important legal arguments.
• Request appropriate findings.
• Monitor the contents of the record.
• Watch for improper ex parte communications.

After the decision

• Obtain the complete administrative record where available.
• Review factual findings carefully.
• Compare findings with the evidence.
• Identify unsupported conclusions.
• Identify procedural errors.
• Determine whether administrative review is required.
• Analyze the applicable standard of judicial review.
• Preserve issues for possible judicial review.

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29. Frequently Asked Questions

What is the administrative record?

The administrative record is the collection of materials that documents the agency proceeding and provides the factual and procedural foundation for the agency’s decision.

Is the administrative record the same as the evidence?

No. Evidence is information used to establish or challenge facts. The administrative record is broader and may include evidence, pleadings, motions, procedural rulings, transcripts, findings, and decisions.

Do administrative hearings use the Federal Rules of Evidence?

Not necessarily. Administrative proceedings often have their own evidentiary rules, and some permit greater evidentiary flexibility than federal courts. The governing statute and agency rules must be examined.

Can hearsay be considered in an administrative proceeding?

Sometimes. The answer depends on the applicable statute, regulations, and type of proceeding. Administrative decision-makers may have greater flexibility than courts to consider reliable hearsay.

Why is cross-examination important?

Cross-examination allows parties to test the accuracy, credibility, methodology, assumptions, and reliability of evidence and witnesses.

Why is the administrative record important in judicial review?

It allows the reviewing court to examine the evidence and reasoning underlying the agency’s decision and determine whether the agency acted lawfully under the applicable standard of review.

Can a court consider evidence outside the administrative record?

Sometimes, depending on the governing statute, type of proceeding, and circumstances. The administrative-record principle is important but is not an absolute rule governing every form of administrative litigation.

Does an agency have to explain its factual findings?

In formal adjudication, the APA requires decisions to include findings and conclusions, together with the reasons or basis for them, on material issues presented on the record.

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Key Takeaways

• Evidence provides information used to establish or challenge facts in an administrative proceeding.
• Administrative proceedings do not necessarily follow the Federal Rules of Evidence.
• The applicable evidentiary rules depend on the agency, statute, regulations, and type of proceeding.
• The administrative record preserves the evidence and procedural history of the case.
• In formal adjudication, the record can include testimony, exhibits, filings, rulings, findings, and decisions.
• The record provides an important foundation for judicial review.
• Relevance, materiality, reliability, and credibility remain important even where administrative evidentiary rules are flexible.
• Cross-examination may be available in formal proceedings but is not identical across all administrative proceedings.
• Lawyers should carefully preserve evidence and legal arguments during the administrative process.
• Courts reviewing agency action generally examine the agency’s decision through the applicable statutory and administrative-law standards rather than simply retrying the case.
• Substantial-evidence review asks whether the record contains sufficient evidence to support the agency’s factual findings.
• Arbitrary-and-capricious review examines whether the agency engaged in reasoned decision-making.
• After Loper Bright, the administrative record does not give an agency automatic control over the meaning of an ambiguous statute.
• The precise scope of the administrative record and judicial review depends on the governing statute and nature of the proceeding.

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Conclusion

Evidence and the administrative record form the factual backbone of administrative adjudication.

An agency cannot meaningfully resolve a disputed matter without information from which it can determine what happened. Evidence provides that information. The administrative record preserves it, together with the procedural history and reasoning that led to the agency’s decision.

This distinction becomes especially important when an administrative dispute reaches court. Judicial review is not normally a second administrative hearing in which the parties simply start over. The court must examine the agency’s action through the legal framework governing review and determine whether the agency acted within its authority, followed required procedures, adequately explained its decision, and supported its factual conclusions under the applicable standard.

For lawyers, the practical lesson is straightforward: build the record while the case is still before the agency. Evidence that is relevant, reliable, properly submitted, and preserved in the record can become decisive later. Conversely, an argument or evidentiary objection that is never properly presented may be difficult to reconstruct on judicial review.

The administrative record is therefore more than a file.

It is the preserved foundation upon which administrative decision-making—and often judicial review—rests.