A New Karoshi Recognition Standard

n An accumulation of tiredness is commonly estimated by overtime work hours.


 nPeriod before the onset of the symptom.

n Within one week within six months.



n Relationship between overwork time and brain / heart disease.

n  >100 hrs, within 1 month   →Strong relationship!

n  >80 hrs, within 2-6 months →Strong relationship!

n  >45 hrs                             Relationship exists.

n  <45hrs, within 6months    Weak relationship.



n Factors that indicates Rousai apart from overtime work hours.

n Changes in quality and amount of work

n Changes in his/her position

n Changes in his/her working partners

n Communication problems with other workers

n Health check-up and caring for his/her health


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