The weekly working hour in 39 out of 157 workweeks (25%) exceeded 60 hours, the maximum number is 77 hours.
The facility had finished training of working hours management for all workers in January 2016. Moreover, 60 workers per month has been hired since February 2016. However, because of production pressure, they could not ensure weekly hours of all workers were within 60 hours.
15 workers were randomly selected from most recent three months (from January 2016 to March 2016) respectively.
In addition, weekly working hours violation was also noted in April 2016.