When I was in my early twenties I had a job at a local gas station. One of the first things I learned was how to tally up cash, cheques and credit card chits (remember those?) at the end of my shift. If it turned out the number of gallons of gas pumped during those eight hours was different than the number of gallons paid for, any shortage came out of my pocket.
Seemed a little rough to me, but it was a lesson in accountability. I’ve found myself up against equivalent practices in every job I’ve held that placed me in a position of trust.