The Short Answer: No Federal Cap on Weekly Hours

If you’re looking for a hard legal limit on how many hours you can work in a week, the federal answer is simple: there isn’t one. The Fair Labor Standards Act, the primary federal law governing wages and hours, does not restrict the number of hours an employee aged 16 or older can work in a single day or workweek.

The number people associate with a “limit” is 40 hours. But 40 is a pay threshold, not a work cap. After 40 hours in a workweek, nonexempt employees must be paid at least 1.5 times their regular hourly rate. The law requires your employer to pay you more, not to send you home.

What this means in practice

Your employer can legally schedule you for 50, 60, or even 80 hours in a week, as long as they pay overtime for every hour past 40. Under at-will employment, which covers most U.S. workers, refusing to work the hours your employer requests can get you fired.

So if federal law doesn’t set a ceiling, what does? It depends on your state, your industry, and your age.

The 40-Hour Week and Overtime Pay Rules

The 40-hour threshold matters because of money, not legality. When you cross it, your paycheck changes.

How federal overtime works

Under the FLSA, nonexempt employees must receive at least 1.5 times their regular rate for every hour worked beyond 40 in a workweek. This applies whether the overtime was voluntary or mandatory. For a full walkthrough of how the calculation works, see our time-and-a-half guide.

Exempt vs. nonexempt: are you covered?

Not every worker qualifies for overtime pay. To be classified as exempt, you must meet all three criteria:

• Salary basis: Paid a fixed salary, not by the hour
• Salary threshold: At least $684/week ($35,568/year) under the 2026 federal standard
• Duties test: Perform executive, administrative, professional, computer, or outside sales duties as defined by the DOL

If you don’t meet all three, you’re nonexempt and entitled to overtime pay. Most hourly workers fall into this category. For a detailed breakdown, read our FLSA overtime rules guide.

Several states set higher salary thresholds: California ($1,352/week), New York’s NYC, Nassau, Suffolk, and Westchester counties ($1,275/week), Washington ($1,541.70/week), and Colorado. When a state’s threshold exceeds the federal one, the state rules apply, so more workers qualify for overtime protection.

The new overtime tax deduction

The One Big Beautiful Bill Act, signed July 4, 2025, created a federal tax deduction for qualified overtime compensation. Nonexempt workers can deduct up to $12,500 (single) or $25,000 (married filing jointly) of their overtime premium pay from federal taxable income for tax years 2025 through 2028.

Only the overtime premium qualifies: the “half” of time-and-a-half, not your full overtime rate. The deduction phases out at $150,000 (single) / $300,000 (joint) modified adjusted gross income (MAGI). Starting with the 2026 tax year, employers report this amount on your W-2 in Box 12, code “TT.” For the full breakdown, see our guide to the no-tax-on-overtime deduction.

States That Limit Your Weekly or Daily Hours

Federal law may not set a ceiling, but several states do. When state law is more protective than federal law, the state law wins.

Daily overtime states

Most states only calculate overtime on a weekly basis. A few require overtime pay based on daily hours too:

• California: Time-and-a-half after 8 hours/day, double-time after 12 hours/day. Also requires double-time after 8 hours on the 7th consecutive day in a workweek.
• Alaska: Time-and-a-half after 8 hours/day
• Colorado: Time-and-a-half after 12 hours/day
• Nevada: Time-and-a-half after 8 hours/day if the employee’s regular rate is less than 1.5x the state minimum wage

If you work in California and put in a 10-hour day, you earn 2 hours of overtime pay that day, even if your weekly total stays under 40 hours. That’s a real difference from states that only use the weekly calculation. See our California daily overtime guide for the full details.

Day-of-rest laws

Can your employer make you work seven days straight without a day off? Under federal law, yes. But several states say otherwise:

• California: Labor Code 551-554 requires one day of rest per seven-day period. Employers who require more than six days of work in seven may face misdemeanor penalties, though Section 554 allows seven consecutive days when equivalent rest is provided within the calendar month.
• Illinois: Requires 24 consecutive hours of rest per calendar week for most employees
• New York: Mandates at least 24 consecutive hours of rest per calendar week in certain industries

These day-of-rest laws create an effective weekly hour cap, even if the state doesn’t set one explicitly. If you’re required to take one day off per seven, your maximum working days are six.

Higher weekly thresholds

While most states follow the federal 40-hour overtime trigger, a few set theirs higher:

• Kansas: 46 hours/week for some employers before overtime kicks in
• Minnesota: 48 hours/week for certain employee categories

These are exceptions, and they work against employees by delaying when overtime pay starts. If you work in one of these states, you need to log more hours before you see that 1.5x rate.

Industry-Specific Hour Limits

Most workers face no hard ceiling on hours, but several industries have federally or state-mandated caps. These exist because fatigue in these jobs can kill people.

Truck drivers (FMCSA)

The Federal Motor Carrier Safety Administration sets strict hour rules: 11 hours of driving within a 14-hour window, with a weekly cap of 60 hours in 7 days or 70 hours in 8 days. Drivers must take at least 10 consecutive hours off-duty between shifts and a 30-minute break after 8 hours of driving. These limits are enforced through electronic logging devices (ELDs), and violations carry fines for both the driver and the carrier.

Commercial pilots (FAA)

The Federal Aviation Administration limits pilots to 100 flight hours per calendar month and 1,000 flight hours in any 12-calendar-month period, with mandatory rest periods between duty assignments.

Healthcare workers and nurses

Eighteen states restrict or prohibit mandatory overtime for nurses: Alaska, California, Connecticut, Illinois, Maine, Maryland, Massachusetts, Minnesota, Missouri, New Hampshire, New Jersey, New York, Oregon, Pennsylvania, Rhode Island, Texas, Washington, and West Virginia. Some ban mandatory overtime outright; others allow it only during declared emergencies. For details, see our mandatory overtime laws guide.

Medical residents (ACGME)

The Accreditation Council for Graduate Medical Education caps residents at 80 hours per week averaged over 4 weeks, with a maximum 24-hour continuous shift (plus 4 hours for transitions) and at least one day off per seven.

Minors and child labor restrictions

Federal law sets strict limits for workers under 16:

• School days: Max 3 hours/day, 18 hours/week
• Non-school days: Max 8 hours/day, 40 hours/week
• 14-15 year olds: Work hours limited to 7 AM-7 PM (9 PM June 1 through Labor Day)

For 16- and 17-year-olds, federal law sets no hour cap, but almost half of all states do. New York limits 16-17 year olds to 28 hours per week during school periods. Check your state’s child labor laws in addition to the federal standards.

Can Your Employer Force You to Work More Hours?

Usually, yes. Under federal law and at-will employment, your employer can require you to work beyond your scheduled hours, and refusing can get you fired. But that general rule has important exceptions.

When you can legally refuse

• Safety hazards (OSHA): If excessive hours create a genuine safety risk (say, operating heavy machinery after a 16-hour shift), you may have grounds to refuse under OSHA’s General Duty Clause. Document the specific hazard.
• Disability accommodations (ADA): If a disability makes extended hours medically unsafe, a schedule limitation may qualify as a reasonable accommodation under the Americans with Disabilities Act.
• Family and Medical Leave (FMLA): If you’re on an approved FMLA leave schedule, your employer cannot force overtime during your protected leave time.
• Union contracts: A collective bargaining agreement may cap overtime hours, set distribution rules, or restrict mandatory overtime.
• Employment contracts: If your contract specifies maximum hours or a set schedule, your employer may be bound by those terms.

Retaliation protections

Your employer cannot single you out for excessive overtime based on race, sex, religion, age, disability, or other protected characteristics. They also cannot retaliate if you file a wage complaint about unpaid overtime. If you believe overtime is being used as retaliation or discrimination, document everything and contact your state’s labor agency or the DOL.

For a deeper look at when and how you can push back on required overtime, read our full mandatory overtime laws guide.

The Health Cost of Working Too Many Hours

Just because you can legally work 55 or 60 hours a week doesn’t mean you should. The research on overwork is pretty alarming.

What the WHO/ILO data shows

A 2021 study by the World Health Organization and International Labour Organization found that working 55 or more hours per week is associated with:

• 35% higher risk of stroke compared to working 35-40 hours per week
• 17% higher risk of dying from ischemic heart disease
• An estimated 745,000 deaths from stroke and heart disease linked to long working hours in 2016
• A 29% increase in overwork-related deaths since 2000

About 9% of the global population works 55+ hours per week. Seventy-two percent of overwork-related deaths occur among men, primarily affecting workers aged 60-79 who kept up these schedules between ages 45 and 74.

Mental health impacts

A peer-reviewed meta-analysis found depression risk increases sharply with hours worked: 2.83x higher at 80-99.9 hours/week and 6.96x higher at 100+ hours/week. Female workers at 55+ hours/week showed a 167% higher risk of depression and 184% higher risk of anxiety compared to those working 35-40 hours. A 2024 U.S. GAO report confirmed that long working hours modestly increase the risk of multiple adverse health outcomes.

Know your own limits

Chronic fatigue, trouble concentrating, increased irritability, and sleep disruption are common signs of overwork. If you regularly exceed 50 hours per week, tracking your actual totals with an app like Timeclock44 can help you spot patterns you might otherwise miss.

How to Track and Protect Your Work Hours

Whether you’re earning overtime, dealing with mandatory schedules, or claiming the new tax deduction, keeping your own records is the best thing you can do to protect yourself.

Why personal records matter

Your employer’s timekeeping system may not capture your actual hours. Courts and the DOL accept personal time-tracking records as evidence when employer records are incomplete or inaccurate. Your log can be the difference between proving unpaid overtime and having no case at all.

What to document

• Actual start and stop times (when you started working, not just when you clocked in)
• Break times and total daily/weekly hours
• Overtime hours tracked separately
• Mandatory overtime requests (who asked and when)

Use a time-tracking app

A phone-based app like Timeclock44 automatically creates timestamped records of every shift and calculates regular and overtime hours, so you can compare against your pay stub each week. Digital records carry more weight than handwritten notes because they’re created in real time.

If your hours don’t match your pay

• Start with your employer. Payroll errors happen. Bring your records and show the discrepancy.
• File a DOL complaint. Contact the Wage and Hour Division at 1-866-487-9243 or file online at dol.gov/agencies/whd/contact/complaints. No lawyer needed.
• Contact your state labor agency. Many states process wage claims faster with additional penalties.

You have 2 years to file a federal claim (3 years if willful). For more, see our guide to off-the-clock work and our complete work-hour tracking guide.