残業代計算 – Japan Overtime Pay Calculator
Japan Overtime Rules
Law: Labor Standards Act (労働基準法)
Standard hours: 40 hours per week
Overtime rate: 1.25x (standard overtime premium)
Late night work (10 PM–5 AM) adds an extra 0.25x premium. Holiday work is paid at 1.35x. Monthly OT exceeding 60 hours is paid at 1.5x (for large companies).
Overtime Rates at Common Japan Hourly Wages
Based on 1.25x (standard overtime premium) overtime rate. Shows OT hourly rate and pay for 10 extra hours per week.
| Regular Rate | OT Rate (1.25x) | 10 OT Hours Pay |
|---|---|---|
| ¥1,000 | ¥1250.00 | ¥12,500 |
| ¥1,200 | ¥1500.00 | ¥15,000 |
| ¥1,500 | ¥1875.00 | ¥18,750 |
| ¥1,800 | ¥2250.00 | ¥22,500 |
| ¥2,000 | ¥2500.00 | ¥25,000 |
| ¥2,500 | ¥3125.00 | ¥31,250 |
| ¥3,000 | ¥3750.00 | ¥37,500 |
Japan Overtime Rules by Region
| Type | Condition | Premium | Notes |
|---|---|---|---|
| Standard OT (残業) | Over 8 hrs/day or 40/week | 1.25x | Basic overtime premium |
| Late night (深夜) | 10 PM–5 AM | +0.25x | Added to base or OT rate |
| Holiday work (休日) | Statutory holidays | 1.35x | Legal holidays only |
| 60+ hours/month OT | Over 60 hrs of monthly OT | 1.5x | Large companies since April 2023 |
| 36 Agreement cap | 45 hrs/month, 360 hrs/year | – | Special clause: max 720 hrs/year |
Additional Rules
Japan uses the 36 Agreement (saburoku kyōtei) system – employers must file an agreement with the labor standards office before requiring overtime. Violations can result in penalties. Karoshi (death from overwork) concerns have led to stricter enforcement.
Frequently Asked Questions
Zangyōdai is the Japanese term for overtime pay. Under the Labor Standards Act, employers must pay a premium of at least 25% above the base hourly rate for overtime work.
The 36 Agreement (saburoku kyōtei) is a written agreement between employers and employees that permits overtime work. Without it, employers cannot legally require overtime.
Yes. The 2019 Work Style Reform Act limits overtime to 45 hours/month and 360 hours/year. Special clauses allow up to 720 hours/year with monthly caps of 100 hours.
Work between 10 PM and 5 AM attracts an additional 25% premium, which stacks with the overtime premium (totaling 1.5x for late-night overtime).