So I started delivering pizza for PizzaHut so I could have some extra pocket money and I have more time due to my lack senior year. So far i have worked one week and found that people suck at tipping. Thanks for your responses. 1. Tip if pizza is delivered 10 minutes or more before your promised time. 2. Tip + or - 5 minutes of promised time. 3. Tip if pizza is delivered 10 minutes or later than promised time.