What Is an Administrative Agency and What Does It Do?

Short answer: an administrative agency is a government body that a law creates to run one area, such as workplace safety. A legislature passes that law, which is called a statute. The statute gives the agency power to do three things: write detailed rules, enforce them, and decide disputes about them. The agency can only act inside the power its statute gives it.

TL;DR

• An agency gets its power from a statute. Lawmakers create it and give it work. Lawyers call that a delegation.
• Agencies do three things. They write rules. They enforce them with inspections and fines. They decide cases in their own hearings.
• Executive agencies sit inside a department the President directs. Independent agencies are separate commissions, usually with limits on firing their leaders. The law on those limits changed in June 2026.
• Agencies write most of the detailed rules a business must follow. A missed deadline can turn their notice into a final order.
• Rules bind you. Guidance mostly shows how the agency thinks.

What is an administrative agency? Where its power comes from

A legislature cannot write every technical detail. So it passes a statute that sets the goal. Then it names an agency to fill in the rest. The agency's power starts and stops with that statute. Our guide to regulations and statutes covers the link.

A quick note on citations: U.S.C. means the United States Code, which collects federal statutes. C.F.R. means the Code of Federal Regulations, which collects federal agency rules.

The Occupational Safety and Health Act of 1970 is a clean example. In its statement of purpose, Congress named two tools (29 U.S.C. § 651(b)(3)). One lets the Secretary of Labor "set mandatory occupational safety and health standards." The other creates a Review Commission "for carrying out adjudicatory functions." The first is the power to write rules. The second is a separate body to decide cases. "Adjudicatory" just means deciding disputes.

The Occupational Safety and Health Administration, or OSHA, sits inside the Department of Labor. The President appoints its head, an Assistant Secretary of Labor, with Senate approval. That official does the duties the Secretary of Labor assigns (29 U.S.C. § 553).

The three jobs, traced through one agency

The Supreme Court sums up the Federal Trade Commission the same way. In Trump v. Slaughter, 609 U.S. 422 (2026), it wrote that the FTC has "vast rulemaking, enforcement, and adjudicatory powers." OSHA lets us follow one subject through all three. The subject is how to report a serious workplace injury.

1. Writing a rule. The statute tells employers to "file such reports with the Secretary" as he prescribes "by regulation" (29 U.S.C. § 673(e)). OSHA used that power in 29 C.F.R. § 1904.39. It says: "Within eight (8) hours after the death of any employee as a result of a work-related incident, you must report the fatality" to OSHA. A hospital stay, an amputation or the loss of an eye must be reported within 24 hours.

The rule did not appear overnight. OSHA proposed it on June 22, 2011 (76 Fed. Reg. 36414) and received 125 public comments. The final rule came out on September 18, 2014 (79 Fed. Reg. 56130) and took effect January 1, 2015. It added the 24-hour reports to the older eight-hour death report. Each step is in the Federal Register. That is the government's daily journal of rules.

2. Enforcing it. The statute lets an OSHA inspector enter a workplace and look around (29 U.S.C. § 657(a)). If the inspector thinks an employer broke a rule, the agency "shall with reasonable promptness issue a citation" (29 U.S.C. § 658(a)). A citation is the agency's written notice of a violation. It usually names a proposed fine.

3. Deciding the dispute. An employer that disagrees has fifteen working days to object. If it stays silent, the citation and penalty "shall be deemed a final order" that is "not subject to review by any court or agency" (29 U.S.C. § 659(a)). If you miss the deadline, the citation usually becomes final. Narrow relief may exist, so get legal help fast. If it contests, the case goes to the Review Commission, which holds a hearing and issues an order "affirming, modifying, or vacating" the citation (vacating means canceling it) (29 U.S.C. § 659(c)). OSHA enforces. A different body decides.

A real case shows all three. On August 17, 2006, a Home Depot employee was found lying in the store's parking lot in Houston. He died two days later. OSHA looked into it. It cited the store for not reporting the death within eight hours and proposed a $1,000 penalty. Home Depot contested. An administrative law judge, meaning a judge who works inside an agency, upheld the citation. On September 16, 2009 the Commission reversed him. It wrote that "pure speculation" that some event at work caused the injury "would not be enough to trigger the application of the cited regulation." The full decision is on the Review Commission's site as Secretary of Labor v. Home Depot #6512, OSHRC Docket No. 07-0359.

Check the date of any old ruling. The rule then in force covered deaths and the hospital stays of three or more employees. The 2014 rule widened it.

Executive and independent agencies

OSHA is an executive agency. It answers to the Secretary of Labor, and the Secretary answers to the President.

The Review Commission is an independent agency. Congress made it a separate three-member body. The President appoints the members with Senate approval. Terms run six years. The statute says a member "may be removed by the President for inefficiency, neglect of duty, or malfeasance in office" (29 U.S.C. § 661(a), (b)). Malfeasance means serious official wrongdoing. The aim is to keep the body that decides cases apart from the body that enforces.

The label is now less settled. On June 29, 2026, the Supreme Court decided Trump v. Slaughter, 609 U.S. 422. The Federal Trade Commission has a similar rule on firing its members. The Court held that rule "contrary to the separation of powers," which is the constitutional rule that divides power among the branches of government. Its reasoning: those within the President's "general administrative control" must be removable at will, meaning for any lawful reason. We are reporting what this one opinion decided. It does not settle the rule for every agency. The Court said its opinion should not be read to reach the Federal Reserve. It left the question for judges of courts such as the Tax Court "for another day." It did not rule on the Review Commission's own clause. Read the opinion on the Supreme Court's site. We read it in October 2026.

So treat "independent" as a description of how Congress built an agency. Whether the law protects that independence is still an open question. The ruling is about who can remove an agency's leaders. It does not rewrite any rule, so check the current text of the one you rely on.

Why a business cares

Agencies write most of the detailed rules you meet day to day. They inspect. They fine. They also hear your side in their own hearings. Three habits help:

• Read the rule and the statute behind it. If a rule goes past what the statute allows, a court can strike it down.
• Watch deadlines. Fifteen working days to contest an OSHA citation is short.
• Mind the level. States run agencies too. Washington's DOSH, a state workplace safety agency, has its own reporting rule, WAC 296-27-031. It sets eight hours for an in-patient hospitalization. The federal rule sets 24. Our guide to federal and state law explains why both can apply.

Kinds of agency action

Each OSHA letter of this kind warns that it "cannot create additional employer obligations." You can find the 2021 letter on osha.gov, filed under standard 1904.39. Our guide to federal agency guidance looks at how guidance differs from a rule.

What goes wrong

• You treat guidance as the rule. A fact sheet is the agency's reading. The regulation decides your duty.
• You miss the deadline. An uncontested citation becomes a final order.
• You read the rule without the statute. The statute sets the limits.
• You rely on an old ruling. The Home Depot case predates the 2014 rule.
• You assume every agency is independent. Check how the agency is built and who can remove its leaders.

This is general information, not legal advice. For real risk, ask a lawyer who handles the agency in question. This guide is part of US Law Data: The Complete Guide.

FAQ

What is an administrative agency in simple terms? A government body that a statute creates to run one area of law, such as workplace safety. It writes detailed rules. It enforces them. It settles disputes about them. OSHA and the FTC are federal examples.

What are the three functions of an administrative agency? Writing rules, which is called rulemaking. Enforcing them with inspections and penalties. Deciding contested cases in hearings. Some agencies do all three. OSHA writes and enforces, and a separate Commission decides.

Where does an agency get its power? From a statute. A legislature creates the agency and delegates authority to it. The agency cannot go past that grant. A court can strike down a rule that does.

What is the difference between executive and independent agencies? In our example, OSHA is an executive agency because it sits inside the Department of Labor, which the President directs. An independent agency is a separate body, often a commission. Congress limited the President's power to fire its leaders. A June 2026 Supreme Court decision struck that limit down for the FTC and left other cases open.

Do agency rules have the force of law? Yes, when the agency stays within the power its statute gave it. Guidance does not carry the same force. It explains how the agency reads the rule.

Can I challenge an agency decision? Often yes. Under the Occupational Safety and Health Act, an employer can contest a citation within fifteen working days. A party hurt by a Commission order can ask a federal court of appeals to review it within sixty days (29 U.S.C. § 660(a)). Other agencies set their own deadlines, so read the statute.

Where do I find agency rules? Federal rules are in the Federal Register and then the Code of Federal Regulations. Each state publishes its own. Check the date on any copy.

If you need the statute and regulation text behind guides like this one, see the Vaquill AI legal data API.

Priyansh Khodiyar

Co-Founder & CTO

Priyansh leads engineering and AI at Vaquill AI: the pipelines that pull statutes, regulations and court rules from every US jurisdiction's official publisher, and the REST API, MCP server and open dataset that serve them.