Short answer: for most hourly workers in the U.S., overtime pay starts after 40 hours in a single workweek. Hours 1 through 40 are paid at your normal rate; every hour after that must be paid at time and a half (1.5x). That's federal law, and it applies to you unless you're exempt or your state has a stricter rule.
Concrete example: you make $20/hour and work 48 hours in one week. The first 40 hours pay $800 (40 x $20). The extra 8 hours pay $240 (8 x $30), because your overtime rate is $30/hour. Total paycheck: $1,040 — not the $960 you'd get if all 48 hours were at the straight rate. That extra $80 is the overtime premium, and your employer owes it by law.
The Fair Labor Standards Act, the federal law that governs overtime, is simple on this point: covered, non-exempt employees must receive overtime pay for hours worked over 40 in a workweek. The overtime rate is at least 1.5 times the employee's regular rate of pay. A workweek is any fixed, regularly recurring 7-day period your employer defines — it doesn't have to match the calendar week.
Three details matter more than people expect. First, the rule is weekly, not daily. Working 12 hours on Monday and 4 hours the rest of the week doesn't trigger federal overtime; it's the 40-hour weekly total that counts. Second, the employer can't pick and choose which employees get it — coverage depends on the job and the employer, not the employer's preference. Most hourly wage workers at businesses with $500,000+ in annual revenue are covered, as is virtually everyone involved in interstate commerce. Third, the 40-hour clock can't be negotiated away. Even if you sign something agreeing to straight time for 50 hours, that agreement isn't enforceable.
The most common misunderstanding is treating overtime as a daily threshold. Under federal law, a brutal single day doesn't create overtime by itself. Work 14 hours on Tuesday but only 32 hours for the whole week? No federal overtime is owed, because the week stayed under 40.
The flip side also surprises people: employers can't average hours across two weeks. If you work 50 hours one week and 30 the next, you're owed 10 hours of overtime for week one — even though the two-week average is exactly 40. Any pay scheme that smooths hours across pay periods to erase overtime (like paying straight time because "it evens out") violates the law. If your pay stub shows two heavy weeks with zero overtime, that's a red flag worth a second look.
Federal overtime runs on the workweek, not the pay period. A workweek is any fixed, regularly recurring period of 7 consecutive 24-hour periods — 168 hours total — that your employer chooses. It can start on any day and at any hour: Wednesday at 6 a.m., Sunday at midnight, whatever the company picked. Once set, it has to stay consistent; the employer can't slide it around to dodge overtime.
This trips people up because pay periods and workweeks often don't line up. A biweekly paycheck covers two workweeks, and overtime is still computed separately for each one. Say your pay period runs the 1st through the 14th, and your employer's workweek runs Sunday to Saturday. You work 48 hours in the first Sunday-to-Saturday stretch and 32 in the second: you get 8 overtime hours for week one. It doesn't matter that the two weeks together total 80, or that the pay period boundaries fall mid-week.
What if you don't know when your employer's workweek starts? Ask payroll — they're required to have a defined one. If none was ever established, the default assumption is the calendar week. And watch for schedule games: an employer that routinely moves your shift across the workweek boundary (say, from Saturday night to Sunday morning) to keep both weeks under 40 may be manipulating the workweek, which the Department of Labor treats as a violation when done to evade overtime.
Another common question: do weekend or night hours count as overtime automatically? Under federal law, no — there's nothing special about Saturday, Sunday, or the night shift. An hour is an hour. Ten hours on a Saturday counts exactly like ten hours on a Tuesday: it all feeds the same 40-hour weekly total.
Where it gets confusing is that many employers choose to pay premiums anyway — weekend differentials, night-shift bonuses, or holiday pay at 1.5x. Those are company policies or union contract terms, not legal requirements. The FLSA doesn't require extra pay for working holidays, either; if your employer pays double on Thanksgiving, that's generosity (or a contract), not the law. The one legal hook: if a non-discretionary premium (like a shift differential) is part of your pay, it gets folded into your regular rate, which raises your overtime rate for that week.
Paid time off is another wrinkle people misread. Vacation days, sick days, and holidays you didn't work generally do not count as "hours worked" toward the 40. Work 32 hours and take 8 hours of PTO in the same week, and you're at 32 hours worked — no federal overtime, even though you were "paid" for 40. Some states and some employers count PTO more generously, but federally, only actual hours worked move the needle.
Federal law is the floor, not the ceiling. Several states require overtime sooner, and where you work can matter more than the federal rule:
California has the most generous rules in the country. Non-exempt employees get overtime (1.5x) after 8 hours in a single day or 40 hours in a week — and double time (2x) after 12 hours in a day or after 8 hours on the seventh consecutive day of work in a workweek. A California warehouse worker pulling a 10-hour shift earns 2 hours of overtime that day, even if the rest of the week is light.
Alaska, Nevada, and Colorado also have daily overtime rules. Alaska requires 1.5x after 8 hours a day. Nevada requires it after 8 hours a day unless the employee earns at least 1.5 times the minimum wage. Colorado applies daily overtime in certain covered industries. A handful of other states (including Kentucky, Minnesota, and Oregon) layer extra protections on top of the federal standard.
This is why "after how many hours is overtime" has no single national answer. If you work in California, the honest answer is 8 hours a day. In Texas or Florida, it's 40 hours a week, full stop.
Overtime pay isn't just your hourly rate times 1.5 — legally it's 1.5 times your regular rate, which can include non-discretionary bonuses and shift differentials. In practice, though, most paychecks work out like this:
At $16/hour working 44 hours: 40 hours at $16 = $640, plus 4 hours at $24 = $96. Total: $736 for the week. Without the overtime premium you'd have gotten $704, so the rule added $32 to your check.
At $25/hour working 55 hours: 40 x $25 = $1,000, plus 15 x $37.50 = $562.50. Total: $1,562.50. That 55-hour week is worth 62.5 straight-time hours of pay.
California daily example at $22/hour, one 10-hour day: 8 x $22 = $176, plus 2 x $33 = $66. Day total: $242.
One thing overtime does not change is your tax treatment. Overtime wages are ordinary income — withheld at the same federal, state, and FICA rates as the rest of your pay. The old rumor that overtime "gets taxed more" is really just bracket math: the extra income can push some dollars into a higher marginal bracket, but each dollar is still only taxed at its own rate.
A quick gut-check you can do yourself: if you earn an hourly wage, you're almost certainly non-exempt and the 40-hour rule applies to you directly. If you're salaried below $684/week, you're non-exempt too — the salary level test is a hard floor, and no job title overrides it. It's the salaried, higher-paid office and management roles where the duties test actually decides things, and that's exactly where misclassification hides.
Not every worker is covered, and the exemptions are where most disputes live. Being paid a salary does not automatically make you exempt — the job has to pass three tests:
First, the salary basis test: you're paid a fixed salary that doesn't change with hours worked. Second, the salary level test: that salary must be at least $684 per week ($35,568 a year) under federal rules. Third, the duties test: your actual work must fall into an exempt category — executive, administrative, professional, computer, or outside sales duties as the regulations define them.
The duties test is the one employers get wrong most often. A "manager" who spends 90% of the day running a register and stocking shelves alongside the crew is probably non-exempt regardless of the title. A salaried office worker making $700 a week but doing routine data entry with no independent judgment is likely owed overtime too. Job titles don't decide; job duties do.
Separately: independent contractors aren't covered by the FLSA at all — but misclassification is rampant. If a company controls your schedule, your tools, and how you do the work, you may legally be an employee even if they call you a contractor and pay you on a 1099. That's one of the most common ways overtime goes unpaid.
And one last practical note: keep your own records. The law requires employers to track hours, but their records are the ones that go missing when there's a dispute. A simple note on your phone — date, start, end, breaks — takes ten seconds a day and is the single strongest thing you can have if a paycheck ever looks short.
"Comp time" instead of overtime pay. Private-sector employers generally cannot give you time off later instead of paying overtime now. (Public employers have limited comp-time rules; private ones don't.) If your boss says "we'll just let you leave early Friday instead," that's not a legal substitute for the 1.5x premium.
Off-the-clock work. Time you spend working counts even if it wasn't scheduled or "approved" — answering messages after closing, finishing paperwork at home, or coming in early to set up. If your employer knew or should have known about it, it's hours worked, and it pushes you toward the 40-hour line like any other hour.
Blended rates and "Chinese overtime." Some employers pay a half-time premium on a fluctuating workweek or try to fold overtime into a flat salary. These arrangements have strict legal requirements and are frequently done wrong. If your stub shows a weird "overtime adjustment" line that doesn't look like 1.5x your rate, do the math yourself.
Under federal law it's 40 hours per workweek. But in California, Alaska, Nevada, and Colorado, overtime also starts after 8 hours in a single day (California adds double time after 12 hours in a day). Check your state — it may owe you overtime the federal rule wouldn't.
Sometimes. A salary alone doesn't disqualify you. To be exempt, the job must pay at least $684/week on a salary basis AND meet a duties test (executive, administrative, professional, computer, or outside sales). Salaried workers who fail either test are owed overtime like everyone else.
No. Overtime is calculated per workweek, and each week stands alone. Working 50 hours one week and 30 the next means 10 hours of overtime for the first week, even though the average is 40.
Federal law never requires double time — only time and a half. California is the main exception: 2x pay is required after 12 hours in a workday and after 8 hours on the seventh consecutive workday in a week.
Start by raising it with your employer in writing and keeping your own hour logs. If that goes nowhere, you can file a complaint with the U.S. Department of Labor's Wage and Hour Division or your state labor agency, which can recover back wages — generally for up to two years (three for willful violations).
No. Overtime wages are ordinary income, withheld at the same rates as the rest of your pay. Extra overtime income can push some dollars into a higher marginal tax bracket, but no special "overtime tax rate" exists.