When we cashed out at my last waitressing job, it tallied up 3% of our sales and we were supposed to give that to the host/hostesses. I'd give more if they helped a lot with bussing, but less if they were double and triple seating me or not helping or being rude. The manager would ask where the money was, and I'd just tell him that they didn't deserve my hard-earned $ that night. Their attitudes usually improved after that
