Last updated October 5, 2026 · Report an error
Shift differential pay adds an extra hourly premium — commonly a percentage of base rate — for working a less-desirable shift (nights, weekends, holidays). Distinct from overtime pay, which covers extra HOURS worked rather than a premium for WHEN hours are worked.
How it works
Enter your base hourly rate, the shift differential percentage, and hours worked. Differential rate = base rate × differential %; shift rate = base rate + differential; total pay = shift rate × hours.
- Enter base hourly rate.
- Enter shift differential (%).
- Enter hours worked.
- Click Calculate to see your results.
Examples
A night shift premium
A $20/hour base rate with a 15% night differential becomes a $23/hour shift rate — working 40 hours earns $920 total, $120 of which is the differential premium.
Who should use it
- Estimating pay for an upcoming night or weekend shift.
- Comparing total compensation between day-shift and night-shift roles.
Industry applications
- Healthcare, manufacturing, and other shift-based industries
- Payroll and HR
Advantages
- Clearly separates the base pay from the differential premium.
- Simple percentage-based calculation matching common employer policies.
Limitations
- Assumes a single flat percentage — some employers use flat dollar amounts or tiered differentials instead.
Common mistakes to avoid
- Confusing a shift differential (percentage of base rate) with a flat dollar-per-hour premium — check your specific employer's policy for which applies.
Best practices
- Confirm your employer's exact differential percentage and which shifts qualify (many differ between weeknight, weekend, and holiday premiums).
Tips
- If you also work overtime hours during a differential shift, check whether your employer calculates overtime on the base rate or the shift-adjusted rate — policies vary.
Frequently asked questions
No — shift differential is a premium for WHEN you work (nights, weekends); overtime is a premium for hours beyond your standard schedule. They can apply together.
Generally no in the US — it's an employer policy or union agreement benefit, not a federal legal requirement (unlike overtime, which is FLSA-mandated for eligible employees).