Labor & Work

Work Hours Calculator

Work out daily and weekly hours from clock-in/out and breaks, and check the 52-hour weekly cap.

Official basis · some exemptions excludedBased on 2026 rulesSources: Labor Standards Act Art. 50, 53, 54 · Ministry of Employment & Labor

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Sun

Leave clock-in/out empty for days off. A clock-out earlier than clock-in is treated as the next day (past midnight).

Weekly working hours (h)

0h

Weekly total-
Overtime (over 8 h/day or 40 h/week)-
Night hours (10pm-6am)-
Versus 52 h/week cap-

Break position is unknown, so breaks are not deducted from night hours. Holiday status and small-workplace exemptions are not reflected; estimate only.

Working-time rules (Labor Standards Act)
Working hours and breaks
ItemRule
Statutory hours (Art. 50)8 h/day, 40 h/week
Overtime cap (Art. 53)Up to 12 h/week by agreement, 52 h/week in total
Breaks (Art. 54)30 min for 4 h of work, 1 h for 8 h
Night work (Art. 56)10pm to 6am (+50% premium)
How it is calculated

Daily working time is clock-out minus clock-in minus break. Overtime is the time beyond 8 hours a day plus any time within 8 hours a day that still pushes the week past 40 hours. A warning appears when the weekly total exceeds 52 hours. Holiday work is not distinguished: every day is added up the same way.

Estimate only. Flexible working-time schemes and special-case industries are not reflected; confirm with the Ministry of Employment and Labor or a labor attorney.
How is the 52-hour week calculated?
The weekly cap is 40 statutory hours plus up to 12 hours of agreed overtime, i.e. 52 hours (Labor Standards Act Arts. 50 and 53). Actual working time excluding breaks is summed across days, and the Ministry of Employment and Labor counts holiday work toward it.
How long must breaks be?
Breaks of at least 30 minutes for 4 hours of work and at least 1 hour for 8 hours must be given during working time (Art. 54). This tool compares your break against that minimum using working time and flags a shortfall.
When does night work start?
Night work runs from 10pm to 6am and earns a 50% premium on the ordinary wage (Art. 56). The night hours shown are the part of your shift that overlaps that window.
How are shifts past midnight handled?
If clock-out is earlier than clock-in it is treated as the next day and counted on the day you started. For example, Monday 22:00 to Tuesday 06:00 is an 8-hour Monday shift with 8 night hours.
Can I turn these hours into pay?
Use the button under the result to pass the overtime and night hours to the overtime pay calculator. Enter your monthly ordinary wage there to get the premium pay.