How to Calculate Overtime Pay: Step-by-Step Examples

Published August 9, 2026 · 8 min read

Calculating overtime pay should be simple and transparent. Whether you are reviewing your weekly pay stubs, budgeting for extra shifts, or managing payroll for a growing business, knowing how overtime math works protects you from payroll errors and ensures accurate compensation.

This comprehensive guide breaks down six real-world overtime calculation scenarios step by step, covering regular hourly wages, bi-weekly schedules, salaried non-exempt compensation, California daily overtime rules, shift differentials, and blended rates for multi-role positions.

The General Overtime Math Formula

Under the Fair Labor Standards Act (FLSA), non-exempt employees in the United States earn time and a half (1.5 times their regular hourly rate) for all hours worked beyond 40 hours in a single 7-day workweek.

• Overtime Rate = Regular Hourly Rate x 1.5
• Regular Pay = Base Hours (up to 40) x Regular Hourly Rate
• Overtime Pay = Overtime Hours x Overtime Rate
• Total Gross Pay = Regular Pay + Overtime Pay

Scenario 1: Standard Hourly Worker

Maria works as a logistics associate earning $18.50 per hour. Due to a seasonal surge in warehouse shipments, she clocks 47 hours during a single 7-day workweek.

Step-by-Step Calculation:

1. Calculate Regular Pay: 40 regular hours x $18.50 = $740.00
2. Calculate Overtime Rate: $18.50 x 1.5 = $27.75 per hour
3. Calculate Overtime Pay: 7 overtime hours x $27.75 = $194.25
4. Calculate Total Gross Pay: $740.00 + $194.25 = $934.25

Because Maria worked 7 hours of overtime, her gross paycheck increased by $194.25 compared to a standard 40-hour week ($740.00 base pay).

Scenario 2: Bi-Weekly Pay Schedule (Weekly Overtime Tracking)

A common payroll misunderstanding occurs when employees receive pay bi-weekly (every two weeks). Federal law requires overtime to be calculated strictly per individual workweek, not averaged across the two-week pay period.

Consider David, a healthcare assistant earning $22.00 per hour, who receives pay every two weeks:

• Week 1 Hours: 50 hours (10 hours overtime)
• Week 2 Hours: 30 hours (0 hours overtime)
• Total Bi-Weekly Hours: 80 hours

Step-by-Step Calculation:

1. Week 1 Calculation: 40 regular hours x $22.00 ($880.00) + 10 overtime hours x $33.00 ($330.00) = $1,210.00
2. Week 2 Calculation: 30 regular hours x $22.00 = $660.00
3. Bi-Weekly Gross Total: $1,210.00 + $660.00 = $1,870.00

Crucial Note: If an employer incorrectly averaged the 80 total hours as 40 hours per week, David would receive $1,760.00 (80 x $22.00). Averaging across workweeks deprives David of $110.00 in earned overtime compensation and constitutes an FLSA violation.

Scenario 3: Salaried Non-Exempt Employee

James earns an annual fixed salary of $41,600.00 ($800.00 per week for an expected 40-hour schedule) as an administrative coordinator. Because his weekly earnings fall below federal exemption thresholds or his duties are non-managerial, he remains legally classified as non-exempt.

During a week preparing for an annual corporate audit, James works 48 hours.

Step-by-Step Calculation:

1. Determine Regular Hourly Equivalent: $800.00 weekly salary / 40 base hours = $20.00 per hour
2. Determine Overtime Rate: $20.00 x 1.5 = $30.00 per hour
3. Calculate Overtime Pay: 8 overtime hours x $30.00 = $240.00
4. Calculate Total Pay for the Audit Week: $800.00 base salary + $240.00 overtime = $1,040.00

Scenario 4: California Daily Overtime & Double Time

California labor law imposes daily overtime thresholds in addition to federal weekly rules. Employees in California earn:

• 1.5x regular rate for hours worked beyond 8 hours in a single workday (up to 12 hours).
• 2.0x regular rate (Double Time) for hours worked beyond 12 hours in a single workday, or past 8 hours on the 7th consecutive day of a workweek.

Sarah, an IT system engineer in California earning $30.00 per hour, works a 14-hour emergency server recovery shift in a single day.

Step-by-Step Shift Calculation:

1. Base Hours (1 to 8): 8 hours x $30.00 = $240.00
2. Overtime Hours (9 to 12): 4 hours x ($30.00 x 1.5 = $45.00) = $180.00
3. Double Time Hours (13 to 14): 2 hours x ($30.00 x 2.0 = $60.00) = $120.00
4. Total Shift Gross Pay: $240.00 + $180.00 + $120.00 = $540.00

Scenario 5: Blended Rate for Multiple Roles with One Employer

When an employee works two different jobs with different pay rates for the same employer during one workweek, FLSA rules mandate calculating overtime using a blended regular rate based on total weighted earnings.

Marcus works at a hotel. In a single week, he works:

• 30 hours as a Front Desk Agent at $16.00 per hour ($480.00)
• 15 hours as a Shift Supervisor at $20.00 per hour ($300.00)
• Total Hours Worked: 45 hours (5 overtime hours)

Step-by-Step Calculation:

1. Calculate Total Base Straight-Time Pay: $480.00 + $300.00 = $780.00
2. Calculate Blended Regular Hourly Rate: $780.00 total base / 45 total hours = $17.33 per hour
3. Calculate Overtime Half-Time Premium: $17.33 x 0.5 = $8.67 per hour
4. Calculate Additional Overtime Pay: 5 overtime hours x $8.67 = $43.35
5. Calculate Total Gross Compensation: $780.00 + $43.35 = $823.35

Overtime Pay Calculation Summary Matrix

3 Steps to Verify Your Own Paycheck

1. Cross-Check Timecard Hours: Always compare the total regular and overtime hours on your pay stub with your personal shift logs or clock-in records.
2. Verify the Hourly Multiplier: Check that overtime hours are billed at exactly 1.5 times (or 2.0 times for double time) your regular hourly base rate.
3. Use Online Calculators: Run your numbers through our Time and a Half Calculator and Hourly to Salary Calculator to confirm accuracy.