Regular Rate of Pay for Overtime

Your overtime rate is not your hourly wage. Under the Fair Labor Standards Act (FLSA), time and a half is paid at 1.5 times your regular rate of pay, which includes nearly everything you earn in a workweek divided by every hour you worked. That includes nondiscretionary bonuses, commissions, piece-rate earnings, and shift differentials. An employer who pays overtime based only on your base hourly rate is underpaying you. The rule comes from 29 CFR 778.108-778.122, which define what goes into the regular rate. Skip the calculation and you lose money you are owed.

The regular rate is every dollar of nondiscretionary compensation in a workweek, divided by total hours worked. Nondiscretionary means the employer promised it or tied it to a goal: attendance bonuses, production bonuses, commissions, shift differentials, and piece-rate earnings all count. Discretionary bonuses, given at the employer's sole whim with no prior promise, are excluded. So are gifts, holiday pay, and certain benefits like health insurance or reimbursement for expenses. DOL Fact Sheet #56A (July 2024) and 29 CFR 778.207-778.224 list the exclusions. The most common failure mode is omitting a nondiscretionary bonus from the regular rate, which means overtime is underpaid by the bonus amount divided by total hours.

A non-discretionary bonus paid at the end of a quarter or year covers multiple workweeks. You must recalculate overtime for each week in the bonus period. Take your total bonus, divide it by the total hours worked in the period, then multiply that per-hour amount by 0.5 for each overtime hour in each week. This is not optional. The DOL gives the method in 29 CFR 778.108-778.122. The failure case: an employer pays a quarterly bonus but does not go back and recompute overtime for the weeks. The worker loses the 1.5x multiplier on the bonus for every overtime hour worked.

Shift differentials, extra pay for working night, weekend, or otherwise less desirable shifts, are included in the regular rate. If you earn $18 per hour plus a $2 night differential, your base for overtime is $20 per hour, not $18. Commissions follow the same rule: total commission earned in the workweek goes into the regular rate calculation. A common error is paying overtime at 1.5x the base wage only, ignoring the commission. That underpayment is illegal under 29 CFR 778.108-778.122.

When an employee works two different jobs in the same workweek at different pay rates, the regular rate is the weighted average of all earnings. Add total pay from both jobs. Divide by total hours worked. The overtime rate is 1.5x that weighted average for every hour over 40. The method is spelled out in 29 CFR 778.108-778.122. The failure case: an employer pays overtime based on the rate for the job being worked at the 41st hour, ignoring the other, higher-paying job. That is wrong. The weighted average captures both rates.

Worked Example: Two Jobs and a Weekly Bonus

An employee works 20 hours at $15/hour as a server and 25 hours at $20/hour as a cook, total 45 hours. She also earns a nondiscretionary attendance bonus that week. Total straight-time earnings: (20 × $15) + (25 × $20) + bonus = $300 + $500 + bonus. Regular rate: ($800 + bonus) ÷ 45 hours. Overtime due for 5 hours: 5 × (regular rate × 0.5). If the employer had used only the kitchen rate ($20) for overtime, the regular rate would be $20 and the result the same, but if the server rate were used ($15), the regular rate would be artificially low. The weighted average protects the worker.

A salaried non-exempt employee earning a fixed weekly salary for hours that vary week to week qualifies for the fluctuating workweek (FWW) method under 29 CFR 778.114. The regular rate is the weekly salary divided by the actual hours worked that week. Overtime is paid at 0.5x that rate for every hour over 40, not 1.5x. This is legal only if the salary covers all hours worked (including overtime), the hours genuinely fluctuate, and both parties agree in advance. The failure case is employers using FWW for employees with predictable, fixed schedules, for example, 9-to-5 Monday through Friday. That does not meet the 'fluctuating' requirement, and the employer owes the full 1.5x rate.

Worked Example: Fluctuating Workweek

A salaried non-exempt manager earns $800 per week. One week she works 50 hours. Regular rate: $800 ÷ 50 = $16.00 per hour. Overtime due for 10 hours at 0.5x: 10 × ($16.00 × 0.5) = $80. Total pay: $800 + $80 = $880. A second week she works 35 hours. No overtime is due. The weekly salary stays $800. The method works because the employer pays a fixed salary that already covers the straight-time portion of overtime hours.

Example 1: Hourly Employee With a Shift Differential

An employee works 44 hours in a week. Base rate is $16/hour. For 30 of those hours, a night shift differential of $2/hour applies. Regular rate calculation: (30 × $18) + (14 × $16) = $540 + $224 = $764 total straight-time earnings. Regular rate: $764 ÷ 44 = $17.36 per hour. Overtime due for 4 hours at 0.5x: 4 × ($17.36 × 0.5) = $34.72. Total pay: $764 + $34.72 = $798.72.

Example 2: Employee With a Quarterly Non-Discretionary Bonus

An employee works 13 weeks, 45 hours each week. Base rate is $20/hour. At the end of the quarter, he earns a nondiscretionary bonus. For each week, the regular rate must be recalculated. Weekly base pay: 45 × $20 = $900. Weekly bonus allocation is the bonus divided by total hours. Weekly regular rate: $20 plus that allocation. Overtime due per week: 5 × (weekly regular rate × 0.5). Total weekly pay: base pay plus overtime.

Example 3: Piece-Rate Employee With Commissions

A piece-rate employee earns piece earnings and commissions in a 48-hour week. Total nondiscretionary earnings are combined. Regular rate: total earnings ÷ 48. Overtime due for 8 hours at 0.5x: 8 × (regular rate × 0.5). Total pay: total earnings plus overtime.

Example 4: Salaried Non-Exempt With Fixed Hours

An employee earns a salary of $900 per week for a fixed 45-hour schedule. Because the hours are fixed, the fluctuating workweek method does not apply. Regular rate: $900 ÷ 45 = $20.00 per hour. Overtime due for 5 hours at 1.5x: 5 × ($20.00 × 0.5) = $50. Total pay: $900 + $50 = $950. The employer who pays only the half-time rate under FWW would owe $50 less and is in violation.

Overtime with a bonus is the single most common miscalculation on paychecks. An employer who pays a quarterly bonus but does not recompute overtime for each week in the period is breaking the law. The regular rate must be recalculated for every workweek in which the bonus was earned. The gap can be hundreds of dollars per quarter. The same rule applies to commissions: total commission earned in a workweek must go into the regular rate, not just the base wage.

The FLSA rules for calculating the regular rate require including all remuneration for employment except certain statutory exclusions. It is not legal advice and does not create an attorney-client relationship. State laws in California, Colorado, Alaska, Nevada, Rhode Island, and Massachusetts may require higher overtime rates, daily overtime thresholds, or double time. For specific cases, consult an employment attorney or your state labor department.

The single most practical thing to do next: compare your pay stub to the weighted average calculation for the workweek. If your employer used only your base hourly rate and ignored a bonus, commission, or shift differential, you are owed back pay. Collect your pay stubs for the past two years, recalculate each workweek, and file a wage claim with the DOL Wage and Hour Division or your state labor department.