How Many Hours Can a Minor Work? An Employer Guide

The first time I hired a teenager, I assumed the hard part would be the training. It was not. The hard part was realizing, a few weeks in, that I had almost scheduled a 15-year-old for an evening shift that would have run past the hour the law allowed, on a school night, without the work permit his state required on file. Nothing bad happened, because I caught it. But it taught me that hiring a minor comes with a compliance layer most small employers never think about until they are already exposed.

If you are a small business owner or manager wondering how many hours a 16-year-old, or a 14-, 15-, or 17-year-old, can work, the honest answer is that it depends on their exact age and the state they work in, and the rules are stricter and more specific than most people expect. Get them wrong and the penalties are steep. Get them right and hiring teenagers is a great way to staff a growing business.

This guide is written for the employer side: what the federal law limits by age, where state law overrides it, the night-work rules, the documents you have to collect before a minor starts, the records you are legally required to keep, and what a violation actually costs. I build onboarding and document management into FirstHR because the paperwork around hiring a minor, the age proof, the work permit, the consent form, the hour records, is exactly where small employers slip up. This is general information, not legal advice, so confirm specifics for your state with counsel.

Quick Answer: Hour Limits by Age

The number of hours a minor can work depends almost entirely on their age, because federal law draws sharp lines between age groups. The two that matter most are the line at 14 (below which most work is barred) and the line at 16 (above which federal hour limits disappear). Here is the whole picture in one view before we go deeper.

The single most important thing to understand is the split at age 16. For 14- and 15-year-olds, federal law is highly restrictive on hours and timing. For 16- and 17-year-olds, federal law sets no hour limit at all in non-hazardous jobs, and the real constraints come from state law and the hazardous-occupation bans. Everything else in this guide builds on that distinction, so it is worth anchoring on before moving to the specifics.

The Federal Rules: What the FLSA Limits

The federal baseline for employing minors comes from the child labor provisions of the Fair Labor Standards Act, enforced by the U.S. Department of Labor. The FLSA sets a minimum working age of 14 for most non-farm jobs, restricts the hours and times 14- and 15-year-olds can work, and bars anyone under 18 from occupations it declares hazardous. Understanding this federal floor is the starting point, because state law builds on top of it.

Two features of the federal framework surprise employers most. The first is that the hour limits apply only to 14- and 15-year-olds; once a worker turns 16, federal law imposes no cap on hours in permitted jobs. The second is that the hazardous-occupation bans apply to everyone under 18, regardless of hours, so a 17-year-old with no hour limit still cannot legally operate certain equipment or work certain jobs. Keeping these two ideas separate, hour limits by age and hazardous-job bans under 18, prevents most compliance mistakes.

The other essential federal principle is that the FLSA is a floor, not a ceiling. Where a state sets stricter rules, which many do, the employer must follow the stricter standard. According to the Department of Labor, when both federal and state child labor rules apply, the higher minimum standard must be obeyed. That single rule governs how everything below fits together.

How Many Hours Can a 14 or 15 Year Old Work?

Federal law places specific, strict limits on 14- and 15-year-olds, and these are the numbers employers most need to memorize. Per Department of Labor Fact Sheet #43, 14- and 15-year-olds may not work more than 3 hours on a school day, 18 hours in a school week, 8 hours on a non-school day, or 40 hours in a non-school week, and all work must be outside school hours. The limits flip depending on whether school is in session.

The night-work window is the detail employers overlook most. For 14- and 15-year-olds, work is only permitted between 7 a.m. and 7 p.m. for most of the year, with the evening cutoff extended to 9 p.m. only from June 1 through Labor Day. That summer extension is why teen scheduling gets easier in June and tightens again at back-to-school. A closing shift that is fine in July can be illegal in October.

There is a narrow exception worth knowing: 14- and 15-year-olds enrolled in an approved Work Experience and Career Exploration Program can work somewhat expanded hours, including during school hours, under program supervision. For the typical small business hiring a teenager for after-school or summer work, though, the standard 3/18/8/40 limits and the 7-a.m.-to-7-p.m. window are the rules that apply, and they should drive every schedule you build for this age group.

How Many Hours Can a 16 or 17 Year Old Work?

Under federal law, there is no limit on the hours a 16- or 17-year-old can work in a non-hazardous job. The Department of Labor is explicit that 16- and 17-year-olds may be employed for unlimited hours in any occupation other than those declared hazardous. No daily cap, no weekly cap, and no federal night-work restriction apply to this age group. This is the answer to the most-searched version of the question, and it surprises many employers who assume all minors face hour limits.

That federal freedom comes with two important qualifications. The first is the hazardous-occupation bans, which apply to everyone under 18 regardless of hours. A 16- or 17-year-old can work unlimited hours, but not in a job the Secretary of Labor has declared hazardous, and there are 17 such categories covering things like operating certain power-driven machinery, roofing, excavation, and driving in most circumstances. Unlimited hours does not mean unlimited jobs.

The second qualification is state law, which is where the real limits on 16- and 17-year-olds usually live. Some states cap the hours this age group can work on school days or in a school week, restrict late-night work before a school day, or require rest breaks. So while the federal answer is genuinely unlimited hours, the practical answer for a specific 16- or 17-year-old depends entirely on the state, which is the subject of the next section.

State Law Overrides: Follow the Stricter Standard

State child labor law is where most of the real constraints on employing minors come from, and the governing principle is simple: when federal and state rules differ, you must follow whichever is stricter. This means the federal rules in this guide are a floor. Your actual obligations can be tighter, sometimes much tighter, depending on where your employees work.

States vary widely. Many set hour limits for 16- and 17-year-olds that federal law does not, particularly on school nights. Many require work permits or employment certificates that federal law does not. Some set earlier night-work cutoffs, mandate rest or meal breaks for minors, or require parental consent forms. A schedule that is perfectly legal under federal law can violate state law, and the state penalty applies regardless of federal compliance.

The practical takeaway is that you cannot run minor scheduling on the federal rules alone. Before you hire anyone under 18, look up the current child labor rules for your specific state, note the hour limits, night-work cutoffs, permit requirements, and break rules, and build your schedule and onboarding around whichever standard is stricter. The Department of Labor publishes a state-by-state reference, and every state labor department publishes its own rules. The related framework of wage and hour law is covered in the Fair Labor Standards Act guide.

Night-Work and Curfew Rules

Night-work limits are among the most commonly violated minor employment rules, because they are easy to forget when you are short-staffed for a closing shift. Federally, the night-work restriction applies only to 14- and 15-year-olds, who may not work before 7 a.m. or after 7 p.m., with the evening limit extended to 9 p.m. from June 1 through Labor Day. There is no federal night-work limit for 16- and 17-year-olds.

State law is where night-work rules get more complex for older teens. Many states restrict how late 16- and 17-year-olds can work, especially on nights before a school day, and some tie the cutoff to whether school is in session the next morning. A 16-year-old who can legally work until midnight on a Friday in one state might be limited to a much earlier cutoff on a Sunday before school in the same state. These school-night rules are precisely the kind of detail that federal compliance does not cover.

The practical defense is to build the night-work cutoff into your scheduling from the start rather than checking it shift by shift. Know the latest permitted end time for each minor, factoring in their age, their state, and whether the next day is a school day, and treat that as a hard boundary the schedule cannot cross. This is a place where a small error, a single late shift, can become a violation with real financial consequences.

Documents to Collect Before a Minor Starts

Before a minor works a single shift, you need the right documents on file, and this is where small businesses without a dedicated HR person most often fall short. The exact requirements vary by state, but the categories are consistent: proof of age, any required work permit, parental consent where mandated, and the school schedule you need to apply hour limits. Collecting these before the first shift, not after, is the whole game.

The reason to treat this as a hard gate is that missing documentation is both a compliance failure in itself and the thing that makes every other violation worse. If a wage-and-hour investigator finds a minor working without the required permit or age proof, that is a problem on its own, and it also signals that your broader minor-employment practices may be loose. Having a clean file for every minor, assembled before they start, is the single best protection an employer has.

This is exactly where a structured onboarding process earns its keep. Building the age proof, work permit, and consent form into the standard new-hire flow for any minor, so the shift cannot be scheduled until the file is complete, turns a scattered, error-prone task into a reliable checklist. The broader new-hire process this fits into is covered in the compliance onboarding guide.

Records You Are Legally Required to Keep

Beyond the documents collected at hire, federal law requires employers to keep specific ongoing records for minor employees, and these records are your primary defense in an investigation. Per the Department of Labor, employers must keep records of the date of birth of employees under 19, their daily starting and quitting times, their daily and weekly hours of work, and their occupations. General FLSA recordkeeping requirements, like name, address, and pay data, apply on top of these.

The date-and-time detail matters more for minors than for adults because the hour limits are so specific. To prove a 15-year-old never worked past 7 p.m. or over 3 hours on a school day, you need records that actually capture start and stop times, not just total hours. Vague or reconstructed records are exactly what fails in an investigation, because the Department of Labor generally credits the employee's account when the employer cannot produce accurate records.

The practical goal is to make this recordkeeping automatic rather than manual. When each minor's date of birth, occupation, and precise daily hours are captured and stored consistently, you can demonstrate compliance instantly if asked. When that information lives in memory and scattered notes, you are exposed. Keeping employee records organized is the foundation, and it connects to the broader practice covered in the guide to time and attendance.

Penalties for Getting It Wrong

The penalties for child labor violations are serious and have been rising, which is the main reason this compliance area deserves real attention rather than a quick assumption. Federal civil money penalties can reach substantial per-minor amounts, with far higher penalties when a violation causes harm, and state penalties can apply on top. For a small business, a single mishandled minor hire can carry a penalty that dwarfs the value of the labor.

Two points make the exposure larger than the headline numbers suggest. First, penalties are generally assessed per violation, so multiple minors or multiple violations multiply the cost quickly. Second, the reputational damage from a child labor finding, particularly one involving an injury, can far exceed the financial penalty for a small business that depends on its local standing. The downside is asymmetric: the cost of compliance is small, and the cost of a violation is not.

The reassuring flip side is that compliance is entirely achievable. The rules, while specific, are knowable, and the documentation and recordkeeping they require are straightforward to build into a hiring process. Employers who take the time to learn the limits for their state, collect the right documents, keep accurate records, and schedule within the rules almost never end up in trouble. The penalties are severe, but they fall on employers who cut corners, not on those who do the basic work.

How Many Hours Should a Teen Work?

Beyond what the law allows, there is a separate and worthwhile question of how many hours a teenager should work, and thoughtful employers consider it. Research on youth employment generally suggests that moderate work hours can benefit teenagers through responsibility and skills, while excessive hours during the school year can interfere with sleep, schoolwork, and well-being. The legal limits for 14- and 15-year-olds roughly reflect this, but for 16- and 17-year-olds, where federal law sets no cap, the judgment falls to the employer.

A reasonable approach for older teens during the school year is to keep hours moderate enough not to compete with school, even when the law would allow more. Many good employers voluntarily cap school-year hours for 16- and 17-year-olds below what state law permits, both because it supports the teenager and because a rested, engaged young worker is more valuable than an overworked one. This is a place where the well-being of the employee and the interest of the business point the same direction.

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