How to Calculate Overtime Pay: Regular Rate, Blended Rate, and Exceptions
5/21/2026
Overtime is not time-and-a-half of the hourly rate. It is time-and-a-half of the regular rate, and the gap between those two things is the single largest source of wage-and-hour liability in the United States.
This guide works through the calculation for every common situation — single rate, multiple rates, salaried non-exempt, piece rate, commissions, and retroactive bonuses — with worked examples and the exceptions that change the method.
The Rule and the Three Steps
Federal law requires overtime at 1.5 times the regular rate for hours worked over 40 in a workweek. Three points define the framework:
The workweek is fixed. A regularly recurring period of 168 consecutive hours, established by the employer and not changed to evade overtime. Each workweek stands alone — you may not average two weeks together, so 30 hours one week and 50 the next owes 10 hours of overtime, not zero.
The regular rate is derived, not assigned. It equals total straight-time compensation for the week divided by total hours worked. You cannot simply designate a regular rate that is lower than this quotient.
Overtime is computed weekly, even for employees paid semi-monthly or monthly.
Every calculation below follows the same three steps: total the straight-time compensation, divide by hours worked to get the regular rate, then pay the premium on the overtime hours.
Our Payroll Wage & Hour Training & Certification Program is built around these calculations.
What Goes Into the Regular Rate
Must be included:
- Hourly wages and salary
- Non-discretionary bonuses — production, attendance, safety, quality, retention, and any bonus announced or promised in advance
- Shift differentials and premium pay for undesirable hours
- On-call pay
- Hazard pay
- Commissions, whether paid weekly or over a longer period
- The value of most non-cash compensation provided as part of the wage
- Retroactive pay increases
May be excluded:
- Genuinely discretionary bonuses, where the fact of payment, the amount, and the timing are all at the employer's sole discretion and not promised in advance
- Gifts on special occasions not measured by hours worked or production
- Payments for time not worked — vacation, holiday, sick pay, and paid leave
- Reimbursement of legitimate business expenses
- Contributions to bona fide benefit plans
- Premium pay for hours worked over 8 in a day or over 40 in a week, and premium pay for weekends or holidays at a rate at least 1.5 times the rate for like work in non-overtime hours — these premiums are creditable against overtime owed
- Certain stock option and equity gains meeting statutory conditions
The discretionary bonus category is narrower than employers believe. Announcing the criteria makes the bonus non-discretionary. "Anyone with perfect attendance this quarter gets $200" is non-discretionary the moment it is said aloud, regardless of what the plan document calls it. A bonus is discretionary only if the employee could not reasonably have expected it.
Example 1: Single Rate With a Bonus
An employee earns $20.00 per hour, works 45 hours, and earns a $100 non-discretionary production bonus.
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Step
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Calculation
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Result
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|
Straight-time wages
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45 hrs × $20.00
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$900.00
|
|
Non-discretionary bonus
|
—
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$100.00
|
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Total straight-time compensation
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$900.00 + $100.00
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$1,000.00
|
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Regular rate
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$1,000.00 ÷ 45 hrs
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$22.22
|
|
Overtime premium (half-time on OT hours)
|
5 hrs × $22.22 × 0.5
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$55.55
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Total due
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$1,000.00 + $55.55
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$1,055.55
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Note the method: because the straight-time wages already compensated all 45 hours at $20.00, only the additional half-time premium is owed on the overtime hours. Paying the bonus and then computing overtime at $30.00 per hour would both under-pay the premium and misstate the arithmetic.
If the bonus were ignored entirely, the premium would be $50.00 — a $5.55 shortfall per employee per week. Across 300 employees over a three-year lookback with liquidated damages, that single omission exceeds $500,000.
Example 2: Two Different Pay Rates — The Blended Rate
An employee works two roles: 30 hours at $18.00 as a technician and 15 hours at $22.00 as a trainer, for 45 total hours.
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Step
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Calculation
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Result
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Technician wages
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30 × $18.00
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$540.00
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Trainer wages
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15 × $22.00
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$330.00
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Total straight-time compensation
|
—
|
$870.00
|
|
Regular rate (blended)
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$870.00 ÷ 45 hrs
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$19.33
|
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Overtime premium
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5 hrs × $19.33 × 0.5
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$48.33
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Total due
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$870.00 + $48.33
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$918.33
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The blended rate is a weighted average of all hours worked, not the rate of the job performed during the overtime hours. A common error is paying the premium at the higher rate because the overtime happened to fall during trainer hours, or at the lower rate because the technician role is primary. Neither is correct.
The alternative method. With a prior agreement or understanding reached before the work is performed, an employer may instead pay overtime at 1.5 times the rate applicable to the type of work performed during the overtime hours. This requires the agreement to exist in advance — it cannot be applied retroactively to whichever method yields less.
Example 3: Salaried Non-Exempt
A salaried non-exempt employee earns $1,000 per week for a 40-hour schedule and works 46 hours.
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Step
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Calculation
|
Result
|
|
Salary
|
—
|
$1,000.00
|
|
Regular rate
|
$1,000.00 ÷ 40 hrs
|
$25.00
|
|
Overtime pay
|
6 hrs × $25.00 × 1.5
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$225.00
|
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Total due
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$1,000.00 + $225.00
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$1,225.00
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Here the salary covered only 40 hours, so the full time-and-a-half applies to the 6 overtime hours rather than a half-time premium.
The critical variable is what the salary is intended to compensate. If the salary covers a fixed schedule of 45 hours, the regular rate is $1,000 ÷ 45 = $22.22, and only the half-time premium is owed on hours 41–45. Document the intended workweek clearly — this determination should not be reconstructed after a dispute begins.
There is also a fluctuating workweek method available in specific circumstances, requiring a clear mutual understanding, a fixed salary regardless of hours, hours that genuinely fluctuate above and below 40, and a resulting regular rate never below minimum wage. Where valid, the salary compensates all hours worked and only a half-time premium is owed — meaning the effective overtime rate decreases as hours increase. The conditions are strict and several states restrict or prohibit the method.
Example 4: Retroactive Bonus Allocation
An employee receives a $1,300 quarterly production bonus covering 13 weeks, during 4 of which they worked 45 hours.
The bonus must be allocated back across the weeks earned — generally $100 per week — and the regular rate recomputed for each affected week:
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Step
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Calculation
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Result
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Bonus allocated per week
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$1,300 ÷ 13 weeks
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$100.00
|
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Additional regular rate per OT week
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$100.00 ÷ 45 hrs
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$2.22
|
|
Additional premium per OT week
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5 hrs × $2.22 × 0.5
|
$5.55
|
|
Weeks with overtime
|
—
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4
|
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Additional overtime owed
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4 × $5.55
|
$22.22
|
Most payroll systems do not perform this automatically. If you pay non-discretionary bonuses covering multiple weeks to non-exempt employees, this retroactive calculation is owed every time, and its absence is a standard Wage and Hour finding.
Where the bonus cannot reasonably be attributed to particular weeks, allocation by an equal amount per week or per hour worked is generally acceptable — but some allocation must occur.
Example 5: Piece Rate and Commissions
Piece rate. Total piece-rate earnings for the week divided by total hours worked gives the regular rate; the half-time premium is then owed on overtime hours. An alternative permits paying 1.5 times the piece rate for pieces produced during overtime hours, with a prior agreement.
Commissions. Commissions are included in the regular rate for the period in which they are earned. When a commission cannot be computed until after the workweek — a common situation — the employer may pay overtime provisionally and then retroactively allocate the commission across the workweeks of the commission period, recomputing the premium for each week containing overtime. This is the same mechanic as the bonus allocation above.
Exceptions and Overlays
Daily overtime. Federal law has no daily overtime requirement, but several states require premium pay after a set number of hours in a day and some require double time above a higher daily threshold. A multi-state employer computing only on the federal weekly standard will under-pay in those states.
Seventh consecutive day. Some states require premium pay for work on the seventh consecutive day in a workweek.
Creditable premiums. Premium pay already paid at 1.5 times or more for daily overtime, weekend, or holiday work may generally be credited toward the weekly overtime obligation, preventing double counting.
Section 7(k) for public safety. Law enforcement and fire protection employees of public agencies may use extended work periods with different thresholds.
Compensatory time. Private-sector employers generally may not substitute comp time for overtime pay. This option is available to public agencies under specific conditions.
Hospital 8/80. Hospitals and residential care establishments may, by agreement, use a 14-day period paying overtime after 8 hours in a day or 80 in the period, whichever yields more.
See our Multi-State Taxation training for the jurisdictional framework and payroll wage and hour training for the enforcement framework.
2026: Isolate the Premium for W-2 Reporting
Beginning with the 2026 tax year, employers must separately report qualified overtime compensation on Form W-2 under the One Big Beautiful Bill Act. Only the premium portion of overtime mandated by Section 7 of the FLSA qualifies — in Example 1 above, the $55.55, not the entire overtime payment.
Voluntary overtime, premiums owed only under state law, and overtime-style bonuses do not qualify. If your system posts all overtime to one earnings code, the required figure does not exist. See our OBBBA payroll forms update session.
The Four Calculation Errors Worth Auditing
Every error below is invisible on an individual paycheck and systematic across a population, which is the combination that produces large settlements.
Paying the full 1.5× when only the half-time premium is owed, or vice versa. The direction depends on whether straight-time wages already compensated the overtime hours. Hourly employees paid for all hours worked are owed the additional half-time premium; salaried non-exempt employees whose salary covered only 40 hours are owed the full time-and-a-half on the excess. Confusing the two either overpays or underpays consistently.
Averaging across pay periods. Overtime is computed per workweek. A semi-monthly pay period contains portions of three workweeks, each evaluated separately. Systems configured to compute overtime on the pay period rather than the workweek produce systematically wrong results, and this is a configuration setting worth verifying explicitly rather than assuming.
Excluding bonuses that are not actually discretionary. Audit the announcement, not the plan document. If employees were told the criteria in advance, the bonus is non-discretionary regardless of what it is labeled internally, and it belongs in the regular rate.
Failing to allocate multi-week bonuses back. Most systems do not do this. If you pay quarterly or annual non-discretionary bonuses to non-exempt employees, verify whether your system generates the retroactive premium — and if it does not, build a manual process, because the obligation exists whether or not the software supports it.
A practical audit approach: select three employees who received a bonus in a week containing overtime, and recompute each by hand using the three steps above. If all three tie to the system, the configuration is probably sound. If any does not, the error almost certainly affects everyone in the same situation.
Frequently Asked Questions
How do you calculate overtime pay?
Total all straight-time compensation for the workweek, including non-discretionary bonuses and shift differentials; divide by total hours worked to get the regular rate; then pay the premium on hours over 40. Where straight-time wages already covered all hours worked, only the additional half-time premium is owed on overtime hours; where the salary covered only 40 hours, the full time-and-a-half applies to the excess.
What is the regular rate of pay?
Total straight-time compensation for the workweek divided by total hours worked. It must include non-discretionary bonuses, shift differentials, on-call pay, hazard pay, commissions, and retroactive pay increases. It may exclude genuinely discretionary bonuses, pay for time not worked such as vacation and holiday pay, legitimate expense reimbursements, benefit plan contributions, and creditable premium pay.
What is a blended overtime rate?
The weighted-average regular rate used when an employee works at two or more pay rates in the same workweek: total earnings from all rates divided by total hours worked. The premium is then computed on that blended rate — not on the rate of the job performed during the overtime hours. An alternative method paying 1.5 times the rate for the work performed during overtime hours is available only with an agreement reached before the work is done.
Do bonuses have to be included in overtime calculations?
Non-discretionary bonuses must be. A bonus is discretionary only if the fact of payment, the amount, and the timing are all at the employer's sole discretion and not promised or announced in advance — so announcing the qualifying criteria makes it non-discretionary. A bonus covering more than one workweek must be allocated back across the weeks earned, retroactively raising the regular rate and generating additional premium for each week containing overtime.
Can overtime be averaged over two weeks?
No. Each workweek stands alone under federal law. An employee who works 30 hours in week one and 50 in week two is owed 10 hours of overtime, even though the two-week average is 40. Averaging across a semi-monthly or monthly pay period is a common and straightforward violation.
Can a private employer give comp time instead of overtime pay?
Generally no. Compensatory time in lieu of overtime pay is available to public agencies under specific statutory conditions. Private-sector employers must pay overtime in wages for the workweek in which it was earned; informal arrangements offering future time off instead are violations even when the employee prefers them.
Going Deeper
State daily overtime, seventh-day, and double-time rules vary and change. Confirm the requirements for every state where employees perform work, and document your workweek definition and any prior agreements before relying on an alternative calculation method.
