Yes. Your employer can require you to be on call as a condition of the job, and refusing can be treated like refusing any other legitimate assignment. The harder question, and usually the one people are really asking when they wonder whether an employer can force them to be on call, is whether that waiting time has to be paid. Under federal law, it depends on how much control the employer has over your time while you wait.
Employers Can Require On-Call Duty
No federal law bars employers from scheduling on-call shifts or making them mandatory. Hospitals, IT teams, utilities, and property management companies all run on around-the-clock coverage, and on-call rotations are the standard way to staff those hours. If your employer tells you on-call duty is part of the role, that is within their authority, and declining can lead to discipline up to termination.
The authority has limits. An employer cannot impose on-call requirements as retaliation for filing a wage complaint or for exercising other protected rights. If you have a disability covered by the Americans with Disabilities Act, you can ask for a modified schedule or restructured duties as a reasonable accommodation, which the employer must grant unless it creates an undue hardship. The employer is not required to remove on-call duty entirely if it qualifies as an essential function of the job.1U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Reasonable Accommodation and Undue Hardship Under the ADA
When On-Call Time Must Be Paid
The Fair Labor Standards Act splits on-call time into two categories: being “engaged to wait” and “waiting to be engaged.” Engaged-to-wait time is compensable. Waiting-to-be-engaged time is not.2U.S. Department of Labor. FLSA Hours Worked Advisor – Waiting Time
The federal regulation states the core rule directly. An employee who must stay on the employer’s premises, or so close to them that the time can’t be used for personal purposes, is working while on call. An employee who only needs to leave word about where to be reached is not.3eCFR. 29 CFR 785.17 – On-Call Time
A firefighter sitting at the station between alarms is being paid, including during the quiet hours, because the waiting is part of the job and there is no leaving. An IT technician on call from home who can cook dinner, run errands, or watch a movie and simply needs to answer the phone is generally not being paid for that waiting.
What Pushes On-Call Time Into Paid Work
Between those two clear cases sits a lot of ordinary on-call work. Courts and the Department of Labor weigh several factors together rather than relying on any single test.4U.S. Department of Labor. Fact Sheet 22 – Hours Worked Under the Fair Labor Standards Act
- Geographic restrictions. A requirement to stay on-site, or within a few minutes of the workplace, tilts strongly toward compensable time.
- Response time. A 15- or 20-minute window can effectively tether you to the area around your workplace. A longer window gives you room to live your life.
- Frequency of calls. If shifts are interrupted so often that you can never settle into a personal activity, the constant disruption points toward work time.
- Personal activity restrictions. Rules against alcohol, requirements to stay in uniform, or bans on certain activities add weight to the argument that the time is not really yours.
- Ability to swap shifts. When you can easily trade on-call duty with a coworker, that flexibility counts against the time being compensable.
No single factor decides it. A 20-minute response window paired with rare calls might not be compensable. A one-hour window with five calls a night might be. The question is whether, taken together, the conditions leave you unable to use the time for yourself.
How On-Call Pay Is Calculated
When on-call time counts as compensable work, the pay must meet at least the federal minimum wage of $7.25 per hour, or a higher state or local minimum if one applies.5U.S. Department of Labor. Minimum Wage Employers can set a lower rate for waiting time than for active duty, provided the waiting rate still clears the minimum wage and you agreed to it in advance. Any hours you are actually called in to work are paid at your regular active rate. If total weekly hours, including compensable on-call time, exceed 40, you are entitled to overtime at one and a half times your regular rate.6eCFR. 29 CFR Part 778 – Overtime Compensation
When two different rates apply in the same week, the overtime rate uses a weighted average. The employer adds up everything earned at both rates, divides by total hours to get your regular rate, and pays overtime at one and a half times that blended figure.7eCFR. 29 CFR 778.115 – Employees Working at Two or More Rates
A short, occasional phone call during otherwise non-compensable on-call time can fall under a “de minimis” exception, which covers infrequent and insignificant work of only a few seconds or minutes that cannot practically be tracked.8U.S. Department of Labor. FLSA Hours Worked Advisor – Recording Hours Worked If those calls happen regularly, or the work is central to what you were hired to do, the time must be recorded and paid.
24-Hour Shifts and Sleep Time
On-call shifts of 24 hours or more have a separate rule. The employer and employee can agree in advance to exclude a scheduled sleeping period of up to eight hours from paid time, but only if the employer provides adequate sleeping facilities and the employee can usually get an uninterrupted night’s sleep.9eCFR. 29 CFR 785.22 – Duty of 24 Hours or More
Any interruption to perform work counts as hours worked. If interruptions are frequent enough that you cannot get at least five hours of sleep, the entire sleep period becomes compensable. Without a prior agreement to exclude sleep time, all 24 hours are paid by default.
Exempt Employees
The engaged-to-wait analysis matters mostly for non-exempt employees covered by the FLSA’s minimum wage and overtime rules. Exempt employees, those who meet the salary and duties tests for executive, administrative, or professional exemptions, do not get overtime, so on-call classification does not directly change their paycheck. The current federal salary threshold for white-collar exemptions is $684 per week.10U.S. Department of Labor. Earnings Thresholds for the Executive, Administrative, and Professional Exemptions If you meet that threshold on a salary basis and your duties qualify, your employer can require on-call shifts without added federal pay obligations. Employers can still choose to pay exempt employees extra for on-call duty, in cash or additional time off, without disturbing the exemption.
State Laws, Contracts, and Union Agreements
The FLSA is a floor. States can and do offer stronger protections, and some apply stricter tests for when on-call time becomes compensable. A handful of states and cities have predictive scheduling laws that require advance notice of on-call shifts or premium pay when schedules change at the last minute. The specifics vary widely by jurisdiction, so check the rules where you work.
Employment contracts can create rights beyond the FLSA. If your offer letter or contract says all on-call time is paid at a certain rate, that promise is generally enforceable regardless of whether the FLSA would require it.
For unionized workers, on-call pay is a mandatory subject of collective bargaining. The National Labor Relations Act requires employers and unions to negotiate in good faith over wages, hours, and working conditions, which includes on-call arrangements.11Office of the Law Revision Counsel. 29 U.S. Code 158 – Unfair Labor Practices Many collective bargaining agreements guarantee on-call pay, cap on-call frequency, or set premium rates. If your union contract addresses on-call compensation, those terms control.
If Your On-Call Time Isn’t Being Paid
If you believe your on-call hours qualify as compensable work and your employer is not paying for them, you have two main options. You can file a confidential complaint with the Department of Labor’s Wage and Hour Division at 1-866-487-9243.12U.S. Department of Labor. How to File a Complaint Or you can file a private lawsuit in federal or state court.
Keep your own records in the meantime. Employers are required to track hours worked, regular rates, straight-time earnings, and overtime pay for each covered employee.13eCFR. 29 CFR 516.2 – Records Required Log the dates and times of your on-call shifts, when you were called in, how quickly you had to respond, and any restrictions the employer imposed. If the employer’s records are thin or missing, your contemporaneous notes become powerful evidence.
Damages
A successful claim recovers your unpaid wages plus an equal amount in liquidated damages, roughly doubling what you are owed, and the court must also award reasonable attorney’s fees and court costs.14Office of the Law Revision Counsel. 29 U.S. Code 216 – Penalties You have two years from each violation to bring a claim, or three years if the violation was willful.15Office of the Law Revision Counsel. 29 U.S. Code 255 – Statute of Limitations Each unpaid paycheck can be its own violation, so the clock runs from each missed payment rather than from when the on-call arrangement began.
Retaliation Protection
The FLSA prohibits employers from firing or disciplining you for raising wage concerns. The protection applies whether you complain to the employer directly, file a formal complaint with the Wage and Hour Division, or participate in a legal proceeding. Most courts have held that even an informal, verbal complaint to a supervisor is protected activity.16U.S. Department of Labor. Fact Sheet 77A – Prohibiting Retaliation Under the FLSA If your employer retaliates, remedies include reinstatement, lost wages, and liquidated damages equal to those lost wages.