Most jobs work that way. A job has a set pay, and you can get fired or promoted. Tipping is unusual: A janitor doesnt get paid a different amount each paycheck because of how clean others feel it is this week. Cashiers who help you find things in the store don’t make more that day.
South Park's creators have eliminated tipping at Denver's famed Casa Bonita. Servers now make $30 an hour — and some are mad. ( www.businessinsider.com )