noise, in which case you might feel compelled to not tip him / her; do not do this, as pizza delivery people subsist on tips. (sbnation.com)
Forcing Work Details: Jobs such as pizza delivery person, fast food cashier, department store stocker and so on usually do not need to be on a veterinary technician resume. (resume-now.com)
Have you never tipped a pizza delivery person?) (inc.com)