How Overtime Pay is Calculated — The FLSA Formula

In the United States, the Fair Labor Standards Act (FLSA) requires employers to pay covered, non-exempt employees overtime at a rate of at least one and one-half times (1.5×) their regular rate of pay for every hour worked beyond 40 in a single workweek. This threshold has remained at 40 hours since the FLSA was enacted in 1938.

1.5× Time and a Half vs 2× Double Time — When Each Rate Applies

Federal FLSA law only mandates the 1.5× rate. Double time (2×) is not a federal requirement but applies in California by state law, in certain other states by regulation, and in many workplaces through union collective bargaining agreements or individual employment contracts.

3 Real Overtime Calculation Examples — Step by Step

The fastest way to understand overtime is to walk through real scenarios. Below are three common situations workers face, calculated exactly.

Salaried Employees and Overtime — The Most Misunderstood Rule

The single most common and costly overtime misconception is that being paid a salary automatically means no overtime. Under federal FLSA, this is only true if you meet all three conditions of an exemption test:

1. Salary basis test: you are paid a fixed predetermined salary
2. Salary level test: your salary is at least $684/week ($35,568/year) under federal law — or the higher state threshold if applicable
3. Duties test: your primary job duties meet the definition of executive, administrative, or professional work

All three must be satisfied. A high salary alone does not create an exemption. An employee titled "manager" who earns $700/week but primarily performs non-exempt work may still be owed overtime if the duties test fails.

For non-exempt salaried employees: divide weekly salary by 40 to get the effective hourly rate, then multiply by 1.5 to find the overtime rate. The calculator above handles this conversion automatically.

The 2025 OBBBA Overtime Tax Deduction — What Most Workers Don't Know

The One Big Beautiful Bill Act (P.L. 119-21), signed in 2025, introduced a new federal tax deduction specifically for overtime workers — effective for tax years 2025 through 2028, meaning it will appear on your 2026 tax return for the first time.

Overtime for Commission and Bonus Workers — The Regular Rate of Pay

When an employee earns commissions, non-discretionary bonuses, or piece-rate pay in addition to hourly wages, overtime cannot simply be calculated on the base hourly rate. The FLSA requires overtime to be based on the employee's regular rate of pay— which includes all remuneration except the specific exclusions listed in FLSA §7(e).

The correct calculation method for mixed-compensation employees:

1. Add all compensation for the week (wages + commission + non-discretionary bonus)
2. Divide by total hours worked (including overtime hours) to get the regular rate
3. Multiply the regular rate by 0.5 (not 1.5) — this "half-time" additional pay covers the overtime premium. The straight-time portion was already included in the total compensation figure
4. Multiply by overtime hours

Industry-Specific Overtime Rules — Healthcare, Trucking & Retail

While most non-exempt workers follow the standard FLSA 40-hour-per-week rule, several industries have unique provisions that change when and how overtime is calculated.

Healthcare and Hospital Workers — The 14-Day Work Period (FLSA §7(j))

Hospitals and residential care establishments may, by prior agreement with employees, use a 14-day work period instead of a 7-day workweek for overtime purposes. Under this arrangement, overtime is owed only for hours over 8 in a single day or 80 in a 14-day period — whichever produces more overtime pay. This is commonly misapplied in hospital settings, and many healthcare employers have faced class-action suits for failing to pay overtime correctly under §7(j).

Trucking — Motor Carrier Act Exemption

Interstate truck drivers whose employer is subject to the Motor Carrier Act are generally exempt from FLSA overtime (Section 13(b)(1)). This applies to drivers operating vehicles over 10,001 lbs GVWR on interstate routes. However:

• Intrastate drivers (operating within a single state) are not covered by the MCA exemption and may be entitled to state overtime
• Drivers of vehicles under 10,001 lbs GVWR (small package delivery, etc.) are generally not exempt
• California does not recognise the MCA exemption for state overtime purposes

Retail and Commissioned Sales — The §7(i) Retail Exemption

Retail or service establishment employees may be exempt from overtime under FLSA §7(i) if: (1) their regular rate exceeds 1.5× the federal minimum wage, and (2) more than half of their compensation in a representative period comes from commissions. If both conditions are met, the employer can pay without the normal 1.5× overtime premium. This is separate from the standard white-collar exemptions.

California Anti-Pyramiding Rule

California Labor Code prohibits "pyramiding" — adding daily overtime hours to weekly overtime hours to inflate the total overtime obligation. If an employee works 10 hours on Monday (2 daily OT hours) and 30 hours the rest of the week (40 total), the employer owes overtime for 2 hours (daily), not 0 additional hours weekly (because the weekly threshold was not exceeded). The daily OT already covers the obligation — it is not added on top of any weekly overtime calculation.