BALIX
As I said before, a number of night shift workers start at 10am, others start at 3am. Here, I suggest, is your 'first' and 'second' night.
Could well be. Is the 3am start the actual start time of a shift on the roster, or do these people get paid from 10pm? Do the people who start at 10pm go home at 3am? Are they paid for the rest of the night?
As for your complaining about how tough it is sleeping when you work shifts, forgive me if I don't show much sympathy. Lot's of people work shifts and get paid a fraction of what you do.