What Is a Regulation? How It Differs From a Statute

Short answer: a statute is a law passed by a legislature, such as Congress or a state senate and house. A regulation is a rule written by a government agency, and it only exists because a statute told the agency to write it. Agency guidance is a third thing: the agency explaining how it reads the first two. Statutes and regulations both bind you. Guidance mostly tells you what to expect.

TL;DR

• Statute: passed by a legislature. It sets the rule and often hands an agency the job of filling in details.
• Regulation: written by an agency, using that handed-over power. It has the force of law, but only inside the limits the statute set.
• Guidance: fact sheets, manuals, letters and FAQs. Useful, but it does not bind the way a statute or regulation does.
• States have all three layers too, with their own names and websites.
• Before you rely on any text you found, check three things: is it the official copy, is it current, and is it the right government.

What is a regulation? The three layers in one table

One rule, traced from top to bottom

Take a question every employer meets: who has to be paid overtime?

The statute. Congress passed the Fair Labor Standards Act in 1938. It requires overtime pay for hours over 40 a week. Then it carves out an exception. Section 213(a)(1) of Title 29 of the United States Code (written 29 U.S.C. § 213(a)(1)) says the overtime rule does not apply to "any employee employed in a bona fide executive, administrative, or professional capacity" ("bona fide" means genuine, not just a job title). The next words matter most: "as such terms are defined and delimited from time to time by regulations of the Secretary". The Secretary is the Secretary of Labor. Congress named the exception and then told an agency to spell out what it means. You can read it on the official US Code site.

The regulation. The Department of Labor did the spelling out in Part 541 of Title 29 of the Code of Federal Regulations (29 C.F.R. Part 541). Section 541.100 (29 C.F.R. § 541.100) says an executive employee must be paid on a salary basis, must have management as their main duty, must regularly direct two or more other employees, and must have real say over hiring and firing. Section 541.600 (29 C.F.R. § 541.600) sets the weekly salary floor. The text now on the official eCFR site names $684 per week.

That dollar figure did not come from Congress. It came from the agency. It has been rewritten more than once, and the rule itself tells you so. The bracket at the end of section 541.100 lists each time it was changed: 2004, 2016, 2019, 2024 and 2026. The statute never moved.

The guidance. The Department also publishes Fact Sheet #17A, which explains these exemptions in everyday language. It is helpful. It is also a summary written by the agency, and it is not the rule. If the fact sheet and section 541.100 ever disagree, the regulation is the text to check.

So a manager who is told "you're salaried, so no overtime" is relying on a statute (the exception exists), a regulation (the salary and duties tests) and sometimes guidance (the fact sheet). A job title alone decides nothing. The duties and the pay both have to fit the regulation.

How each one changes

A statute changes by vote. A bill passes both chambers and the president or governor signs it. This is slow on purpose.

A regulation changes by process. Under the federal Administrative Procedure Act, an agency usually has to publish a proposed rule in the Federal Register (the government's daily journal), take public comments, then publish a final rule. Each step leaves a paper trail you can read. Our guide to reading the Federal Register shows what those notices look like.

Guidance changes whenever the agency edits a page. That can happen with no vote and no comment period, which is why it is the easiest layer to find out of date.

What the difference means for you

A court can strike down a regulation that goes further than the statute allows. Then the regulation falls and the statute stays. This is why a rule you read in the Code of Federal Regulations can lose force later, even while it still appears in print.

Guidance is different. An agency's guidance shows how it plans to enforce, and a smart business reads it for that reason. But you cannot point to a fact sheet as if it were the law itself.

The state angle

States run the same system. A state legislature passes statutes, collected in a state code. State agencies write regulations, often called administrative rules or administrative code, and they publish guidance.

California shows the pattern well. Labor Code section 515(a) lets the Industrial Welfare Commission set exemptions for executive, administrative and professional employees, and it requires a monthly salary of at least two times the state minimum wage for full-time work. The commission's rules appear as industry wage orders, which the state's Department of Industrial Relations lists on its wage order page.

Now see the trap. A California employer must meet the state rules and the federal ones. The state test and the federal test are different, and the more protective one usually wins for the worker. Our guide to state regulations explains where those rules live.

What goes wrong

• You read a summary and treat it as the rule. Blog posts, fact sheets and chatbots are not the law.
• You use an old copy. A PDF saved three years ago may show a salary figure that has since changed.
• You use an unofficial site. Many sites copy the law. Some lag behind. The official US Code and eCFR sites are the places to check.
• You use the wrong government. Federal text says nothing about your state's extra rules, and the reverse is also true.
• You skip the statute. A regulation only makes sense next to the law that authorised it.

Questions to ask before you rely on a text

1. Is this the official source, or a copy of it?
2. What is its date, and when was it last amended?
3. Is it a statute, a regulation or guidance?
4. Which government wrote it: federal, or which state?
5. Which statute gave the agency power to write it?

If you cannot answer the first two, find the official page before you act. Our short guide on how to cite a statute or regulation shows how to write down exactly what you relied on.

This is general information, not legal advice. For a decision that carries real risk, ask a lawyer licensed in your state.

This guide is part of US Law Data: The Complete Guide, a map of where US law comes from and how to use it.

FAQ

What is a regulation in simple terms? A regulation is a rule written by a government agency to carry out a law. A legislature passes the law and the agency fills in the details. Regulations have the force of law when they stay within the power the statute gave.

What is the difference between a statute and a regulation? Who writes it, and how it changes. A legislature writes a statute and changes it by vote. An agency writes a regulation under authority from a statute and changes it through a public process with proposed and final rules.

Do regulations have the force of law? Yes, if the agency stayed inside the authority the statute gave it. A court can strike a regulation down when the agency went too far. That is why checking the statute behind a rule matters.

Is agency guidance legally binding? Not in the same way. Guidance explains how an agency reads a law and how it may enforce it. You should read it, but the statute and the regulation are the texts that decide your duties.

Where do I find federal and state regulations? Federal regulations are in the Code of Federal Regulations, which eCFR.gov publishes in current form. Each state has its own administrative code, usually on the secretary of state's or legislature's website. Search for the state name plus "administrative code".

Which wins if a federal and a state rule differ? It depends on the subject. In wage and hour law, an employer generally has to meet both, which in practice means following whichever rule gives workers more protection. Ask a lawyer for your situation.

Is a "rule" the same as a "regulation"? Usually yes. Agencies call the same thing a rule, a regulation, or an administrative rule. The Federal Register uses "rule" and the Code of Federal Regulations uses "regulation".

If you need the underlying statute and regulation text for your own product or compliance work, 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.