Foods stay frozen longer if the freezer remains unopened, is full, is in a cool place and is well insulated. Usually food in a loaded freezer will stay frozen for two to four days, depending on its size. A half-filled freezer will keep food frozen only about 24 hours. Cover the freezer with blankets, keeping them away from the compressor, to help hold the cold.
Anxiety and depression indices also point to the likelihood of an adverse effect on mental health from shift work and long working hours. Nevertheless it must be remembered that, by and large, shift workers are a self selected population.
Rotating shifts are hardest on the body, so find something that works for you. A word to the wise, if you self-schedule, a lot of us find that quickly moving from a night to a day can be the hardest. For example, work Monday night then Wednesday morning. But then again, I'm old.