Working as a freelancer I have to hand in a monthly timesheet. I was told to print it out three times and sign them. A photocopied signature would not be acceptable.
After one year I found out that the manager signs one of the sheets, throws the other two away and makes two copies of the signed one.
I asked him why I have to give him three sheets then.
He answered: I don't know either.

Now the fun fact: the next copier is a 2min walk from his office