Overtime Pay Explained: Rules, Multipliers, and How to Calculate What You're Owed
Daily vs. weekly thresholds, 1.5× vs. 2× rates, blended-rate employees, and exempt vs. non-exempt status — this guide covers every scenario with clear, worked examples.
You worked 47 hours this week. Your base rate is $16 an hour. Simple enough — except the moment overtime enters the picture, most people aren't quite sure what they should actually receive. Is it 1.5× for all seven extra hours? Does a bonus change anything? What if you worked at two different rates during the week?
Overtime rules aren't difficult once you understand the framework. This guide breaks them down clearly — with real numbers — so you can verify your payslip with confidence, or calculate your team's wages without making a costly mistake.
What Triggers Overtime?
Overtime kicks in when an employee works beyond a defined threshold within a set period. The two most common structures are:
- Weekly overtime: Hours beyond 40 in a workweek. This is the standard under the US Fair Labor Standards Act (FLSA) and widely adopted elsewhere.
- Daily overtime: Hours beyond 8 in a single day. California, for example, requires time-and-a-half after 8 daily hours and double time after 12 hours — on top of the weekly threshold.
Some jurisdictions also mandate a premium for working on a public holiday, regardless of weekly totals. Before calculating anything, confirm exactly which rules apply in the region and industry you're dealing with — the differences are significant.
Understanding the Pay Multipliers
Once you're in overtime territory, the most common rates are:
- 1.5× (time-and-a-half): The default for the first band of overtime hours in most countries.
- 2× (double time): Applied for extremely long shifts, rest days, or public holidays depending on the contract or local law.
- Custom contract rates: Collective agreements sometimes specify 1.25× for the first few hours. A contract can be more generous than the legal minimum but cannot drop below it.
Exempt vs. Non-Exempt: Who Gets Overtime?
Not every employee is entitled to overtime — that's the central concept behind "exempt" classifications. In the US, a worker is potentially exempt from FLSA overtime if they:
- Earn at least $684 per week on a guaranteed salary basis (the salary-level test as of 2024), and
- Work in an executive, administrative, professional, or highly compensated capacity (the duties test).
Both conditions must be met. Failing either one means the employee is non-exempt and owed overtime. Misclassifying a worker as exempt is one of the most common and expensive wage-and-hour violations — penalties can include back pay, liquidated damages, and legal fees. If there's any uncertainty, consult an employment attorney before making the call.
Step-by-Step: Calculating Your Regular Rate
Overtime isn't calculated on the base wage alone. The law requires it to be calculated on the regular rate of pay, which includes non-discretionary bonuses and shift differentials. Here's how to find it:
Example with a performance bonus
An employee earns $15/h as their base rate and worked 45 hours in a week. They also earned a $100 performance bonus (non-discretionary — it was promised in advance for hitting a production target).
- Base wages: 45 hours × $15 = $675
- Total compensation: $675 + $100 = $775
- Regular rate: $775 ÷ 45 hours = $17.22/h
- Overtime premium (half-time method): 5 OT hours × ($17.22 × 0.5) = $43.05
- Total pay: $775 + $43.05 = $818.05
Notice that using the base rate of $15 instead of the regular rate of $17.22 would have underpaid by about $11 — which sounds small until you multiply it across a 50-person team for a year.
Two Ways to Express the Same Calculation
You'll encounter two equivalent methods when working through overtime:
The full overtime method
Pay regular hours at the regular rate, and overtime hours at 1.5× the regular rate:
- 40 regular hours × $17.22 = $688.80
- 5 OT hours × ($17.22 × 1.5) = $129.15
- Total: $817.95 (minor rounding vs. the half-time result above)
The half-time method
Pay all hours at the regular rate first, then add a 0.5× premium for overtime hours only. This approach is typical when a salary already covers all hours worked.
Both methods produce the same total. Choose the one that fits your payroll system's logic — just apply it consistently.
What About Employees Working at Two Different Rates?
An employee who splits the week between two roles at different pay rates — say $14/h on standard duties and $18/h on specialist tasks — needs a blended regular rate.
- Total earnings: (hours at $14 × $14) + (hours at $18 × $18)
- Total hours worked: all hours combined
- Blended regular rate: Total earnings ÷ Total hours
- Overtime premium: OT hours × (Blended rate × 0.5)
Worked example
30 hours at $14 = $420. 15 hours at $18 = $270. Total: $690 across 45 hours. Blended rate: $690 ÷ 45 = $15.33/h. Overtime premium: 5 hours × ($15.33 × 0.5) = $38.33. Total pay: $690 + $38.33 = $728.33.
Salaried Workers Aren't Always Exempt
A salary doesn't automatically make someone exempt from overtime. If a salaried employee doesn't satisfy both the salary-level test and the duties test, they're still entitled to overtime. To find their regular rate, divide the weekly salary by the number of hours it's meant to cover (usually 40), then apply the standard overtime premium to hours beyond the threshold.
The cost of getting overtime wrong cuts both ways. Underpaying employees is a legal liability. Overpaying because of formula errors is a silent drain on the payroll budget. Neither is a good outcome.
Record-Keeping Obligations
Every employer should retain daily start and end times, total hours per day and week, regular rate calculations, and overtime breakdowns for at least three years. Document the classification basis for each exempt employee and revisit it whenever their job duties change — changed responsibilities that no longer meet the duties test can turn an exempt worker into a non-exempt one overnight.
A Faster Way to Run the Numbers
CalcTap's Overtime Calculator handles all of the above. Enter hours, rate, overtime multiplier, and any bonuses, and it returns a full breakdown of regular pay, overtime pay, and gross total. It also supports blended-rate calculations and double-time thresholds for California-style daily overtime rules.