It depends on what kind of "slave job" it is. I worked shifts that lasted for days – almost always, I could get a full night's sleep, and on the 2-2 day/night shift at a rather unpleasant place, the nights were relatively okay because it wasn't as stuffy, and I could also take naps, more or less. However, it was incredibly uncomfortable, and my circadian rhythm suffered. Sometimes I would catch up on sleep the next day, sometimes not, and I would feel like I was constantly on edge.
Added 2 minutes later
Damn, I have to think about the next drawing for the pair. Maybe I'll skip it; I don't know.

