Overtime Rate Calculator Formula
Understand the math behind the overtime rate calculator. Each variable explained with a worked example.
Formulas Used
Overtime Rate
overtime_pct = total_hours > 0 ? (overtime_hours / total_hours) * 100 : 0Total Overtime Cost
overtime_cost = overtime_hours * avg_hourly_rate * overtime_multiplierOvertime Premium (extra cost above regular)
premium_cost = overtime_hours * avg_hourly_rate * (overtime_multiplier - 1)Variables
| Variable | Description | Default |
|---|---|---|
overtime_hours | Total Overtime Hours | 120 |
total_hours | Total Hours Worked (regular + overtime) | 8120 |
avg_hourly_rate | Average Hourly Rate(USD) | 25 |
overtime_multiplier | Overtime Multiplier | 1.5 |
How It Works
How to Calculate Overtime Rate
Formula
Overtime Rate = (Overtime Hours / Total Hours Worked) x 100 Overtime Cost = Overtime Hours x Hourly Rate x Multiplier
Tracking overtime reveals whether you are understaffed or inefficiently scheduling. The overtime premium (the extra cost above base pay) directly eats into margins. Some overtime is expected during peak seasons, but persistent high overtime often signals the need for additional hires, which can be cheaper than sustained premium pay.
Worked Example
A team works 8,120 total hours including 120 overtime hours. Average hourly rate is $25 with 1.5x overtime pay.
- 01Overtime Rate = (120 / 8,120) x 100 = 1.48%
- 02Overtime Cost = 120 x $25 x 1.5 = $4,500
- 03Overtime Premium = 120 x $25 x 0.5 = $1,500
Frequently Asked Questions
When is overtime cheaper than hiring?
Overtime is cost-effective for temporary demand spikes or seasonal peaks. But if overtime consistently exceeds 5-10% of total hours, hiring additional staff often costs less when you factor in overtime premiums, burnout, errors, and reduced productivity.
What is the standard overtime multiplier?
The US federal standard is 1.5x (time-and-a-half) for hours beyond 40 per week. Some states, union contracts, or company policies use 2x (double time) for extended overtime, holidays, or weekends.
Learn More
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Ready to run the numbers?
Open Overtime Rate Calculator