Night shift generally refers to the period from the afternoon of 10 to 6 am the next day, and from the afternoon of 10: 30 to 4 pm the next day, so it is counted as the night shift of the previous day.

According to the relevant laws and regulations, "if it is necessary to shorten the working hours under special conditions, it shall be implemented in accordance with the relevant provisions of the state." At present, the system of shortening night working hours in China includes enterprises that implement three shifts. The working hours at night should be one or two hours less than the day shift, and the night shift allowance should be paid.