Yes. Especially at work because a) it's an employee bathroom. People know who used it last b) the toilet doesn't flush well. There is always "leftovers".
My definition of courtesy flush is to cover up poop noises. So yes, I will courtesy flush, especially if I am having stomach issues and don't want to embarrass myself.
"Why would you ruin perfectly good peanuts by adding candy corn? That's like saying hey, I have these awesome nachos, guess I better add some dryer lint." - Nonny