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keisanHigh-precision calculations for everyday life and work

Calculation of Sickness Allowance Amounts

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Calculate the amount of sickness and injury allowance. This allowance is paid by the health insurance system when an insured person takes time off work due to illness or injury and does not receive sufficient compensation from their employer.
Standard Monthly Wage
Yen Average amount for 12 months prior to the start of benefits
Number of days absent from work
Day (※1)
Salary During Leave
Yen 
Benefit Amount Yen

Days off work


  • (※1) Enter the number of days off work, including Saturdays and Sundays, after completion of the 3-day waiting period.

  • The maximum benefit period is 1 year and 6 months.


Benefit amount

Daily benefit = [Average standard monthly remuneration for each month of the 12 consecutive months before the benefit start date] ÷ 30 × 2 ÷ 3

Eligibility conditions

Benefits are paid when all 4 conditions below are met.


  • Leave from work to receive treatment for an illness or injury caused by non-work-related reasons

  • Being unable to work

  • Being unable to work for at least 4 days, including 3 consecutive days

  • No salary payment for the period off work


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