Back in the summer, I used to work full time, 5 days a week, 8 hour shifts with no breaks, someday going a few hours overtime. I would have late night shifts and had no time to sleep as I would wake up and go to work the next day. When I would have a day off, I would sleep for a long period of time (12 hours) and I would tend to have weird dreams about the kitchen I was in.
CAP5.ALEXM
The same thing happened to me! I was a server in the summer and I would have nightmares about being really busy at work.