It is a good idea to take a nap just before reporting for a night shift. This makes you more alert on the job. A nap of about 90 minutes seems to be best. Naps during work hours may also help you stay awake and alert.

What time should I sleep if I work night shift?

8 A.M.: Get in bed ASAP. If you expose yourself to too much light, youll disrupt the circadian clock youre trying to reset and your body temperature will rise too soon after you fall asleep; If that happens, youll wake up before getting enough rest. 8 A.M.–3 P.M.: Sleep.