A 45-hour week shows up on the timesheet, and the question that follows is never simple: is all of it paid at the regular rate, does only the last 5 hours count as overtime, and is that extra time worth 1.5x or 2x the usual hourly rate? Add a salaried employee into the mix, or a state with its own daily overtime rule, and "just calculate the overtime" stops being a one-line answer.
Overtime rules look simple on paper — work more than 40 hours, get paid more for it — but the details around who qualifies, how the rate is calculated, and which hours actually count trip up payroll spreadsheets constantly. This guide breaks down exactly how overtime works, who's entitled to it, and the mistakes that lead to underpaid or overpaid hours.
Overtime is extra pay owed to eligible employees for hours worked beyond a standard threshold, usually 40 hours in a workweek under U.S. federal law. It's typically paid at 1.5 times the regular hourly rate, known as time and a half, though some states and employers apply double time for hours beyond a higher threshold or for holiday work. Only non-exempt employees qualify.
What is overtime, and what are the options?
"Overtime" can mean a few different things depending on which threshold, rate, and jurisdiction apply, and it helps to separate them before doing any math.
- Weekly overtime is the federal standard: any hour worked beyond 40 in a single workweek is paid at an increased rate, regardless of how those hours were spread across the days.
- Daily overtime applies in certain states, such as California, where hours worked beyond 8 in a single day trigger overtime pay even if the weekly total stays under 40.
- Time and a half is the standard overtime multiplier: 1.5 times the regular hourly rate, applied to qualifying overtime hours.
- Double time is a higher multiplier, 2 times the regular rate, that applies under specific state laws or company policy — for example, hours beyond 12 in a day in California, or work on a designated holiday.
Which of these applies depends on the employee's classification, the state's labor laws, and sometimes the employer's own overtime policy, which can be more generous than the legal minimum but never less.
Why understanding overtime rules matters
Getting overtime wrong isn't just a rounding error — it creates compliance risk and directly affects take-home pay. A few places this shows up:
- Payroll compliance. Misclassifying an employee as exempt when they don't meet the legal test, or miscalculating the overtime rate, can trigger back-pay liability and penalties under wage and hour law.
- Employee trust. A paycheck that doesn't match hours actually worked, especially when overtime is shorted, is one of the fastest ways to erode confidence in a company's payroll process.
- Budgeting and staffing. Understanding true overtime cost, including how bonuses affect the regular rate, helps managers decide when hiring extra staff is cheaper than paying overtime.
- Multi-state operations. A business operating in several states may owe daily overtime in one location and only weekly overtime in another, so a single company-wide rule can quietly violate local law.
Step-by-step: calculating overtime pay
Method 1: Standard weekly overtime (time and a half)
- Confirm the employee is non-exempt. Only non-exempt employees are legally entitled to overtime pay; check job duties and salary level against exemption tests first.
- Total the hours worked in the workweek. Add up all hours across the defined seven-day workweek, not the pay period, which may span two workweeks.
- Separate regular hours from overtime hours. The first 40 hours are regular; anything beyond that is overtime.
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Calculate the overtime rate.
Overtime rate = Regular hourly rate × 1.5
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Calculate total overtime pay.
Overtime pay = Overtime rate × Overtime hours
- Add it to regular pay. Total weekly pay is regular pay for the first 40 hours plus the overtime pay calculated above.
Method 2: Daily overtime (state-specific)
- Check state law. States like California require overtime after 8 hours in a single workday, in addition to the federal 40-hour weekly rule.
- Track hours per day, not just per week. A day with 10 hours worked triggers 2 hours of daily overtime, even if the employee works fewer than 40 hours that week overall.
- Apply the correct multiplier per threshold. Some states escalate further — for example, hours beyond 12 in a day may be paid at double time rather than time and a half.
Method 3: Adjusting the regular rate for bonuses or commissions
- Add non-discretionary bonuses or commissions to base pay for the week. These generally must be included when calculating the true regular rate of pay.
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Divide by total hours worked to find the adjusted regular hourly rate for that week.
Adjusted regular rate = (Base pay + Bonus) ÷ Total hours worked
- Apply the 1.5x multiplier to the adjusted rate, not the original base rate, when calculating overtime pay for that week.
Common mistakes with overtime calculations
1. Assuming salaried always means exempt
Being paid a salary does not automatically exclude an employee from overtime; exemption depends on both meeting a minimum salary threshold and passing a specific job-duties test, not on the pay structure alone.
2. Calculating overtime over the pay period instead of the workweek
Overtime is legally calculated per workweek, not per biweekly pay period, so averaging hours across two weeks — for example, 30 hours one week and 50 the next — can hide overtime that was actually owed for the 50-hour week alone.
3. Leaving bonuses and commissions out of the regular rate
Non-discretionary bonuses and commissions generally must be folded into the regular rate before applying the 1.5x multiplier, so calculating overtime on base pay alone understates what's actually owed.
4. Ignoring state-specific daily overtime rules
Relying only on the federal 40-hour weekly threshold misses daily overtime requirements in states that have them, which can understate overtime pay even when the weekly total looks correct.
Real-world overtime examples
A few common scenarios and how the overtime pay works out for each.
Time and a half vs double time vs daily overtime
A side-by-side look at how the three common overtime rules compare.
| Factor | Time and a half | Double time | Daily overtime |
|---|---|---|---|
| Multiplier | 1.5x regular rate | 2x regular rate | 1.5x (or higher) |
| Legal basis | Federal law (FLSA), 40 hrs/week | State law or company policy only | Specific states only (e.g. California) |
| Trigger | Hours beyond 40 in a workweek | Hours beyond a higher daily/weekly cap, or holidays | Hours beyond 8 in a single workday |
| Applies nationwide | Yes | No | No |
Skip the manual math: free overtime calculator
If a paycheck just needs the overtime total worked out, the Rebrixe Overtime Calculator works entirely in your browser: enter the hourly rate, hours worked, and overtime rule, and get the exact regular pay, overtime pay, and total instantly. No formulas, no account, no data sent anywhere.