Administrative agencies are government bodies authorized by law to administer particular programs or regulatory areas. Depending on the authority assigned to them, agencies may issue rules, investigate and enforce legal requirements, decide individual disputes, distribute benefits, grant licenses, or collect and publish information.

At the federal level, agencies include departments, commissions, boards, bureaus, and other entities. States and local governments also create administrative bodies. An agency's name does not by itself determine its powers; those powers come from constitutions, statutes, valid regulations, and other applicable law.

What administrative agencies do

Legislatures establish government programs and assign responsibilities to agencies because implementation often requires specialized expertise and continuing administration. For example, an agency may:

• set technical standards within authority delegated by statute;
• process applications for benefits, permits, or licenses;
• inspect regulated facilities or review required reports;
• investigate possible violations;
• bring or decide enforcement matters;
• impose remedies authorized by law; and
• provide guidance and information to the public.

Not every agency performs every function. A benefits agency and an economic regulator may have very different structures, procedures, and enforcement powers.

Rulemaking, enforcement, and adjudication

Three recurring agency functions are rulemaking, enforcement, and adjudication.

Rulemaking

Rulemaking is the process of formulating, amending, or repealing an agency rule. Under the federal Administrative Procedure Act (APA), many legislative rules use a notice-and-comment process. The agency publishes a proposal, allows interested people to submit data and arguments, and then issues a final rule with a statement explaining its basis and purpose.

The APA and other statutes contain exceptions and specialized procedures, so not every federal rule follows the same path. Agencies also publish interpretive rules, policy statements, manuals, and guidance that can have different legal effects from a binding legislative rule.

Enforcement

Agencies enforce statutes and regulations through the tools that Congress or another lawmaking body has authorized. Those tools may include inspections, subpoenas, compliance orders, administrative complaints, civil penalties, licensing action, or lawsuits filed in court.

An agency cannot assume unlimited enforcement authority simply because its mission is broad. The legal question is whether the governing statute permits the particular action and whether the agency followed required procedures.

Adjudication

Agency adjudication resolves individual matters through an authorized decision-making process. A case might concern eligibility for a benefit, a license, a regulatory violation, or another disputed issue.

The federal APA's formal-adjudication provisions apply when a statute requires a decision on the record after an opportunity for an agency hearing, subject to exceptions. Other agency decisions use informal or program-specific procedures. It is therefore inaccurate to assume that every agency matter resembles a courtroom trial or is heard by an administrative law judge.

Executive and independent agencies

Federal agencies are often described as executive or independent, but those labels summarize a range of statutory structures.

Executive departments and many other agencies operate under presidential supervision, often through a Cabinet secretary or a single administrator. Some independent commissions use multimember leadership, staggered terms, party-balance requirements, or statutory limits on removal. Other bodies combine features in different ways.

The Constitution and each agency's statute determine how appointment, removal, supervision, and decision-making work. Courts analyze those arrangements specifically; there is no rule that every entity called an “independent agency” has the same protections or powers.

Limits on agency power and judicial review

An administrative agency must act within the authority given to it by law. Its actions can be limited by:

• the Constitution;
• the agency's authorizing statute;
• the APA or another procedural statute;
• valid regulations;
• required findings and evidentiary standards; and
• review by a court with jurisdiction.

Under 5 U.S.C. § 706, a reviewing court decides relevant legal questions and can set aside agency action that is arbitrary, capricious, an abuse of discretion, contrary to law, unconstitutional, beyond statutory authority, or procedurally defective under the applicable standards.

In Loper Bright Enterprises v. Raimondo (2024), the U.S. Supreme Court overruled the *Chevron* framework, under which courts had sometimes deferred to a reasonable agency interpretation of an ambiguous statute. Courts must now exercise their own independent judgment about statutory meaning. That does not erase agency authority: a statute may expressly or implicitly delegate discretion, and courts still respect lawful factfinding and policymaking within that delegation under the appropriate standard of review.

Why administrative agencies matter

Agency action affects everyday activities, including workplace safety, taxes, immigration, environmental permits, communications, transportation, health programs, consumer finance, and professional licensing.

For a person or business dealing with an agency, the source and stage of the action matter. A proposed rule, guidance document, inspection notice, administrative complaint, and final order do not carry the same legal effect or review path. The relevant statute and agency rules may impose short deadlines for comments, hearings, internal appeals, or judicial review.

Frequently asked questions

Are agency regulations laws?

Valid regulations can have binding legal force, but agencies do not enact statutes. They issue rules within authority delegated by a legislature and subject to constitutional and statutory limits.

Can an agency act as both prosecutor and judge?

Some agency structures separate investigative, enforcement, and adjudicative personnel within the same organization. The law governing the agency and the APA may impose separation-of-functions and due-process requirements.

What did Loper Bright change?

It overruled *Chevron* deference and requires courts to exercise independent judgment when interpreting statutes. It did not eliminate lawful delegations of authority to agencies.

Can an agency decision be challenged?

Often, yes. A party may have administrative appeal or judicial-review rights, but finality, exhaustion, standing, jurisdiction, and filing deadlines can affect the available route.

Are state agencies governed by the federal APA?

Generally, no. State agencies are governed by state constitutions, statutes, and administrative-procedure laws, although federal law can also apply to particular programs or issues.

*This glossary entry provides general legal information, not legal advice. Agency authority and review procedures depend on the jurisdiction, governing statute, and specific action involved.*