I used to be contracted to work 9-6.00 pm. The store closed at 5.30 pm, but as you know there are always shoppers who lag behind and are there right up until 5.45 pm & beyond!
As I was the manager, I decided to start the proper tidying at 5.15 pm ~ although I was quite a little Hitler with regards to trying to keep the store tidy all day so that it wasn't so bad later on..not always successful I must add!
Anyway, the store was usually tidy by 6.00 pm and I would let the staff go by then. I then had to cash up which would take anything from 15 minutes to 30..depending on any discrepancies I had to sort out. I was usually out of the store by 6.20-30 pm which I was never paid for. Considering this was every day, it soon added up. No doubt the company owed me thousands by the time I packed up retail ;o)