Overtime calculations are simple arithmetic but complicated by jurisdiction, worker classification, workweek definitions, and employer policy. Use the calculator to model a stated rule, then verify the rule that applies to you.
Separate regular and overtime hours
Regular pay = regular hours × base rate. Overtime pay = overtime hours × base rate × overtime multiplier. A 1.5 multiplier means time-and-a-half, but not every situation uses that rule.
Worked example
At $24 per hour, 40 regular hours and 8 overtime hours at 1.5×, regular pay is $960 and overtime pay is 8 × $36 = $288, for $1,248 gross before deductions.
Check the governing rule
Some rules depend on daily hours, weekly hours, holidays, double time, exemptions, or collective agreements. The calculator cannot determine legal classification or whether bonuses belong in the regular rate.
Read the payslip
Compare the modeled regular rate, premium portion, total hours, and deductions with the payroll statement. Keep records and ask payroll or the relevant labor authority about unexplained differences.
Sources
The figures and rules in this guide are checked against:
- Overtime Pay — U.S. Department of Labor, Wage and Hour Division
- Fact Sheet #23: Overtime Pay Requirements of the FLSA — U.S. Department of Labor, Wage and Hour Division
- 29 CFR Part 778: Overtime Compensation — Electronic Code of Federal Regulations (eCFR)
- Overtime: your rights — GOV.UK