minimum wage with no periodic raises (less than minimum wage if under 18)
hard work goes unnoticed
dead-end job with no opportunity for advancement
tedious and monotonous work
no insurance/benefits
part time/erratic hours (usually no more than 25 hours/ week)
limited responsibility
could still do your job even if you left your brain at home
have to ask to use the bathroom
have to ask to get something to drink (only have 30 seconds to drink it)
have to wear a uniform straight out of the 1920's
have to deal with hungry customers who complain about paying 10 cents for extra pickles on their burgers
have to work nights/weekends/holidays for no additional compensation (only closed on Christmas and Easter)
makes skin/hair/clothes greasy, dirty, and stinky
have to clean public restrooms, empty public trashes, clean up "accidents" in the kid zoo