Direct answer
Subtract only unpaid lunch time from the shift span. A 30-minute unpaid lunch is 0.50 hours, so an 8.5-hour clock span becomes 8.0 paid hours.
Working formula: Paid hours = clock-out minus clock-in minus unpaid lunch hours.
Open Time Card With Lunch CalculatorA realistic workplace example
A shift from 8:30 AM to 5:00 PM is 8.5 hours. If lunch is unpaid for 30 minutes, payroll hours are 8.0. If the lunch was paid, the paid result stays 8.5.
Clock span: 8.50 hours; unpaid lunch: 0.50 hours; payroll paid hours: 8.00.
Comparison table
| Input | Check | Result |
|---|---|---|
| Search question | lunch break deduction payroll | Subtract only unpaid lunch time from the shift span. A 30-minute unpaid lunch is 0.50 hours, so an 8.5-hour clock span becomes 8.0 paid hours. |
| Formula | Paid hours = clock-out minus clock-in minus unpaid lunch hours. | A shift from 8:30 AM to 5:00 PM is 8.5 hours. If lunch is unpaid for 30 minutes, payroll hours are 8.0. If the lunch was paid, the paid result stays 8.5. |
| Copyable result | Keep assumptions visible | Clock span: 8.50 hours; unpaid lunch: 0.50 hours; payroll paid hours: 8.00. |
How to check it without overthinking
Key checks
- Calculate the full shift span first.
- Convert lunch minutes to decimal hours.
- Subtract only unpaid meal time.
- Repeat per shift instead of subtracting one weekly block.
- Check whether the payroll system already applied the deduction.
Mistakes that change the answer
Do not enter 30 minutes as 0.30 hours.
Do not deduct paid rest breaks.
Do not use scheduled lunch if the actual approved deduction was different.
Copy this note
Clock span: 8.50 hours; unpaid lunch: 0.50 hours; payroll paid hours: 8.00.
If you send the result to payroll, HR, a manager, or a client, include the inputs and the rule you used. That makes the number easier to verify.
Useful next pages
Related page: /guides/what-is-30-minutes-in-decimal-hours/
Related page: /guides/how-to-calculate-lunch-break-hours-in-a-timesheet/
Related page: /tools/decimal-hours-calculator/
Open Time Card With Lunch Calculator