Overtime pay is additional compensation paid to employees for hours worked beyond a standard threshold — typically 40 hours per week (US federal) or 8 hours per day — at a rate of at least 1.5× the regular hourly wage. In the United States, overtime pay is governed by the Fair Labor Standards Act (FLSA). In China, it is regulated by Labor Law Article 44.
If you've ever stared at your paycheck wondering whether you were paid correctly for those extra hours, you're not alone. Overtime pay calculation can be surprisingly confusing — even for employers. This guide breaks down exactly how to calculate overtime pay, with real formulas and examples you can follow right now.
What Is Overtime Pay?
Overtime pay is the additional compensation you receive for working beyond your standard scheduled hours. In most countries, this means any hours worked beyond 8 per day or 40 per week.
The key number to understand is the overtime multiplier — how much more per hour you earn during overtime. Common multipliers:
- 1.5× (time and a half) — the most common standard worldwide
- 2× (double time) — for holidays, weekends, or extreme overtime
- 1.25× — used in some countries or collective agreements
The Overtime Pay Formula
The core calculation is straightforward:
Total pay for the period: Total Pay = (Regular Hours × Hourly Rate) + Overtime Pay
Let's put real numbers to this formula.
Step-by-Step Calculation Example
Your situation: Hourly rate $25/hr · 48 hours worked this week · 40-hour weekly threshold · 1.5× multiplier
Step 1 — Regular hours: 40 hrs (capped at threshold)
Step 2 — Overtime hours: 48 − 40 = 8 hrs
Step 3 — Regular pay: 40 × $25 = $1,000
Step 4 — Overtime pay: 8 × $25 × 1.5 = $300
Daily vs Weekly Overtime: Key Difference
There are two common methods, and the result can be very different depending on which applies to you.
Weekly Overtime
You earn overtime for every hour worked beyond the weekly threshold (usually 40 hrs). Only the weekly total matters — not how individual days were distributed.
Daily Overtime
You earn overtime for every hour worked beyond the daily threshold (usually 8 hrs), regardless of your weekly total. This is standard in California (USA) and Chinese labor law.
Schedule: 10 hrs/day for 4 days = 40 total hours
Weekly overtime → 0 overtime hours (exactly at 40-hr threshold)
Daily overtime → 4 days × 2 hrs over 8 = 8 overtime hours
Tip: Always check your employment contract and local labor law to confirm which method applies to you. Using the wrong method is one of the most common causes of payroll errors.
Overtime Rules by Country
| Country | Threshold | Rate | Notes |
|---|---|---|---|
| USA (Federal) | 40 hrs/week | 1.5× | California: also 1.5× after 8 hrs/day |
| UK | Contract-based | Contract-based | No statutory rate; National Min Wage must be met |
| China | 8 hrs/day | 1.5× weekdays · 2× weekends · 3× holidays | Labor Law Article 44 |
| EU (general) | 48 hrs/week (max) | Set by member state or contract | Working Time Directive applies |
| Canada | 44 hrs/week (federal) | 1.5× | Provinces may vary |
| Australia | 38 hrs/week | 1.5× (first 3 hrs) · 2× after | Modern Award standard |
Do the math automatically
Enter your clock-in and clock-out times — ClockCalc calculates regular hours, overtime hours, and total pay instantly. Export to Excel for your records.
Try ClockCalc Free — No Signup →How to Track Your Hours Accurately
Overtime calculation is only as accurate as your time records. You need to capture:
- Clock-in time — when you actually start work, not when you arrive at the building
- Break duration — unpaid lunch and rest breaks are typically deducted from work hours
- Clock-out time — when you stop working
- Date and day of week — weekends and holidays often have different rates
A simple weekly timesheet is the most reliable method. Fill it in daily — trying to reconstruct a week from memory is error-prone and harder to defend if there's a dispute.
Common Overtime Calculation Mistakes
1. Forgetting break deductions
If you work from 9:00 AM to 6:30 PM with a 30-minute unpaid lunch, your work hours are 9 hours, not 9.5. Always subtract unpaid breaks before calculating overtime.
2. Rounding incorrectly
Some employers round time to the nearest 15 minutes. If they consistently round down, it can significantly reduce your recorded hours over a year. Check your company's rounding policy.
3. Using gross pay instead of base rate
Overtime is calculated on your base hourly rate, not your total compensation. Bonuses and allowances are generally excluded from the overtime calculation base unless specified otherwise.
4. Ignoring daily overtime when it applies
If you're in a jurisdiction with daily overtime (California, China, etc.) but your employer only calculates weekly, you may be owed additional pay even in weeks where you work 40 hours or less.
Frequently Asked Questions
Does overtime apply to salaried employees?
In most countries, overtime laws primarily protect hourly workers. Salaried employees above a certain salary threshold may be exempt. Check your local labor authority's rules — in the US, for example, the FLSA exemption threshold is $684/week (2024).
Is overtime pay taxed at a higher rate?
Overtime pay itself is not taxed differently. However, earning more in a single pay period may temporarily push more of your income into a higher tax bracket. Your overall annual effective tax rate remains the same.
What if my employer doesn't pay overtime?
Keep meticulous records of all your hours worked. If you believe you're owed overtime, contact your country's labor authority (US: Department of Labor, UK: HMRC, China: local labor bureau). A timesheet with documented hours is your key evidence.
Can I waive my right to overtime pay?
In most jurisdictions, no. Overtime protections are minimum legal standards. Even if you sign a contract agreeing to forfeit overtime, that clause is usually unenforceable. "Comp time" (time off instead of pay) is only legal in certain public-sector situations in the US.
How do I calculate overtime for a partial week?
For weekly overtime, only count hours actually worked in the payroll week — not the hours you were scheduled for. For daily overtime, each day stands independently regardless of the week total.
Conclusion
Overtime pay follows a clear formula — but the details matter. Know your threshold (daily or weekly), your multiplier, and make sure breaks are correctly deducted. Track your hours every day rather than reconstructing them at week's end.
If you'd rather not do the math manually, ClockCalc handles all of it for free: clock-in/out times, break deduction, daily or weekly overtime, and Excel export so you always have documentation.
- U.S. Department of Labor – Overtime Pay (FLSA)
- California DIR – Overtime Frequently Asked Questions
- GOV.UK – Overtime: your rights
- Government of Canada – Federal Labour Standards
- China Labor Law Article 44 (中华人民共和国劳动法 第四十四条) – Overtime rates: 1.5× weekday, 2× weekend, 3× public holiday
Related: Payroll Time Calculator · IHSS Overtime Calculator · ¿Cómo se calcula el overtime? · Weighted Overtime Calculator · No Tax on Overtime 2026