Japan Overtime Pay Calculator (Zangyodai): 25%, 50%, Late Night, Holiday
Calculate overtime pay in Japan: hourly wage from your monthly pay, overtime at 25% and 50% beyond 60 hours, late-night work at 25% and holiday work at 35%.
Late-night overtime adds both premiums (125% + 25% = 150%). The hourly wage excludes family, commuting and housing allowances; fixed overtime pay already included in the salary is not taken into account.
What it does
Under article 37 of the Labor Standards Act, work beyond 8 hours a day or 40 hours a week is paid at least 25% extra, and 50% extra beyond 60 hours of overtime in a month. Work between 22:00 and 5:00 adds 25%, and work on the statutory weekly holiday is paid at 135%.
How to use it
- Type the monthly base pay and the scheduled hours a month.
- Add the overtime, late-night and holiday hours of the month.
- Read the hourly wage and the overtime pay.
The arithmetic runs in your browser. Nothing you type is sent anywhere and nothing is stored, so you can use these with real numbers.
Frequently asked questions
How is overtime pay calculated in Japan?
Monthly pay ÷ scheduled hours × 1.25 × overtime hours. With 300,000 yen and 160 hours the hour is 1,875 yen: 60 hours pay 140,625 yen and 10 more at 50% add 28,125.
Does the 50% rate apply to small companies?
Yes. Since April 2023 the 50% rate for overtime beyond 60 hours a month applies to all companies, including small and medium ones.
How much is holiday work?
135% of the hourly wage on the statutory holiday (one day a week). With 1,875 yen an hour, 8 hours pay 20,250 yen.
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