Being told to stay late or come in on your day off raises two questions: can the employer require it, and will you be paid properly? This guide explains the federal rule, the common exceptions and what to do if you cannot or do not want to work the extra hours.
The short answer
In most of the United States, yes. Federal law does not cap the hours an adult employee can be required to work, and it does not require an employer to ask for volunteers before assigning overtime. The Fair Labor Standards Act (FLSA) regulates pay, not scheduling: the Department of Labor states that the FLSA does not limit the number of hours in a day or days in a week an employee may be required or scheduled to work, including overtime, if the employee is at least 16 years old. What the FLSA does require is that covered, non-exempt employees be paid at least one and one-half times their regular rate for hours over 40 in a workweek.
Because most employment in the U.S. is at-will, an employee who refuses mandatory overtime can generally be disciplined or terminated unless a contract, a union agreement, a specific statute or a legal protection says otherwise. The exceptions are real, and they matter, so this guide covers both the rule and the limits.
What the law requires the employer to pay
Required overtime must be paid. Time and a half applies to every hour over 40 in a workweek for non-exempt employees, regardless of who requested the hours. Hours an employer knows or has reason to know you worked are compensable even if the overtime was not approved in advance. An employer may discipline you for working unauthorized overtime, but it must still pay for the time. A common example: your manager says overtime requires pre-approval, yet expects the report finished by Monday. If you work 4 extra hours to finish it, those hours are paid hours.
Here is how a mandatory extension works out. You earn $19.00 an hour and normally work 36 hours. Your employer requires two 5-hour extra shifts in a week, bringing the total to 46 hours. Regular pay is 40 × 19 = $760.00. The overtime rate is 19 × 1.5 = $28.50, so 6 overtime hours add $171.00, for a total of $931.00 gross. Run your own numbers in the Overtime Pay Calculator, and read how to calculate overtime pay for the full method. Note that the 36 hours you normally work are paid at straight time until you pass 40, because federal overtime is based on hours over 40, not on hours beyond your usual schedule.
Comp time is not a substitute for overtime pay
Private-sector employers generally cannot give time off instead of paying overtime. Compensatory time off in lieu of overtime pay is largely limited to public agencies such as state and local governments. A private employer may in some cases adjust hours within the same pay period so that a worker who works long on Monday works short on Friday, but only if the total hours in each workweek stay at or under 40. If you were promised comp time for overtime at a private company and that arrangement defers pay beyond the workweek, check with your state labor agency or the Department of Labor.
Exempt employees can also be required to work extra
Employees who qualify for an overtime exemption, such as certain executive, administrative and professional employees, are paid a salary for the job and not for each hour. They can be required to work extra hours and do not receive overtime pay. Whether you are really exempt depends on salary and job duties, not on your title, as explained in exempt vs. non-exempt employees. If you are misclassified, you may be owed overtime for the hours you were required to work.
When you may be able to say no
Situations that can limit or excuse mandatory overtime
| Situation | How it can help | Notes |
|---|---|---|
| Union or employment contract | May cap overtime, require rotation or limit forced overtime | Check the collective bargaining agreement or your written contract |
| State laws on specific occupations | Some states restrict mandatory overtime for particular jobs, such as nurses | Rules vary by state and occupation; check your state labor or health agency |
| Age | Minors 14 and 15 are limited to specific hours under federal law | Federal limits for 14- and 15-year-olds are covered in our child labor hours guide |
| Disability | The ADA may require reasonable accommodation of schedule or hours | Requires a covered employer and an actual need; talk with HR |
| Pregnancy | Federal law may require reasonable accommodations related to pregnancy and childbirth | Applies to covered employers and certain conditions |
| Religion | Title VII may require accommodation of sincerely held religious practices | Employer can deny if it would cause undue hardship |
| Family or medical leave | FMLA leave can be used for qualifying reasons, including intermittent leave | Eligibility depends on employer size and your hours of service |
| Transportation safety rules | Federal hours-of-service limits apply to commercial drivers and similar roles | The limits protect safety and cannot be waived by the employer |
| Imminent danger | OSHA protects refusal to work only in narrow, serious cases | Not a general right to refuse overtime |
State laws that matter
State law adds protections that the FLSA lacks. California requires daily overtime beyond 8 hours and double time beyond 12, and also requires a day of rest in seven in most circumstances, with exceptions. See California overtime rules. Illinois has a One Day Rest in Seven Act, and a number of states restrict mandatory overtime for nurses and other health care workers. Some cities and states require reporting-time pay or predictive scheduling in retail and food service, which affects short-notice shift changes. Because these rules are specific and change, check your state labor department's website for the rule that applies to your occupation. Workers under 16 have separate federal hour limits, explained in how many hours a 15-year-old can work.
Refusing overtime: practical steps
- Read your offer letter, handbook and any union contract for overtime language. Many say that overtime may be required as a condition of employment.
- If you have a legitimate conflict, such as a medical need, a religious practice or a caregiving issue, tell your supervisor or HR in writing and ask what accommodation or leave options exist.
- Ask whether a shift swap, partial overtime or advance notice is possible. Many employers prefer a negotiated solution to discipline.
- If you work the overtime, record your hours exactly. Use the Weekly Time Card Calculator to total the week, and see what counts as hours worked if you are unsure whether prep time or meetings count.
- If you were disciplined for something that may be protected, or if you were not paid for overtime, save the paperwork and contact your state labor agency, the Wage and Hour Division or an employment attorney.
Retaliation
Even in an at-will setting, an employer may not retaliate against you for asserting a legal right. The FLSA prohibits retaliation against employees who file a complaint or raise wage issues, and other laws, such as the ADA and FMLA, protect people who request covered accommodations or leave. Refusing overtime for no protected reason generally is not protected, but asking for the overtime you worked to be paid is.
Frequently Asked Questions
Can my employer force me to work overtime?
Generally yes. Federal law does not limit how many hours an adult can be required to work, though non-exempt employees must be paid time and a half for hours over 40 in a workweek. Contracts, union agreements and some state laws can limit mandatory overtime.
Can I be fired for refusing overtime?
In most at-will jobs, yes, unless the refusal is protected, for example by a union contract, a disability or religious accommodation, family or medical leave, or a state law.
Does my employer have to pay for overtime that was not approved?
Yes. If the employer knew or had reason to know you worked the time, it must pay for it, though it may discipline you for violating a policy.
Can my employer give me comp time instead of overtime pay?
Private employers generally cannot. Comp time in lieu of overtime pay is largely limited to public agencies.
Do salaried employees have to work overtime?
Exempt salaried employees can be required to work extra hours without extra pay. Salaried workers who do not meet the exemption tests are still owed overtime.
Are there limits on mandatory overtime for nurses?
Some states restrict mandatory overtime for nurses and other health care workers. There is no general federal limit, so check your state's rules.
Related tools & guides
This guide is for general informational purposes only and is not legal, tax, or financial advice. Labor laws vary by state and change over time. Confirm your specific situation with your employer, HR department, or the U.S. Department of Labor.