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Japanese Overtime Pay Calculator

Calculate Japanese overtime pay (残業代) with the legally mandated 25% / 35% / 50% premium rates for weekday OT, late-night, and holiday work.

2026 tax-year compliantSwitch to Japanese version

Japanese Overtime Pay Calculator

Calculate Japanese overtime pay (残業代) with the legally mandated 25% / 35% / 50% premium rates for weekday OT, late-night, and holiday work.

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  2. 2. Calculateclick the button
  3. 3. Resultshown instantly
×10K JPY
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Key Points

  • +25% weekday OT, +50% beyond 60h/month
  • +25% late-night (22:00–05:00), stackable
  • +35% legal holiday work
  • Based on 労働基準法 (Labor Standards Act)

FAQ

What are the legal Japanese overtime rates?

労働基準法 mandates: +25% for normal overtime, +50% if weekday OT exceeds 60 hours per month, +25% late-night (22:00–05:00), +35% on legal holidays. Late-night premiums stack on top.

How is the base hourly rate calculated?

Monthly salary divided by average monthly work hours (typically 160–170h). Excludes commuting allowance and family allowance for the legal-minimum calculation.

Does this apply to "discretionary work" (裁量労働制) staff?

Generally no for the OT premium itself, but late-night and holiday premiums still apply. Consult your contract.

⚠️ Disclaimer

This calculator provides estimates only. For actual tax filing, please consult a licensed 税理士 (zeirishi) or FP (Financial Planner). Results are not a substitute for professional advice.

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