> But assuming that the waiter is already reaching minimum wage this month, then refusing to tip means that the waiter is only earning $2-$3 per hour for the ti

> But assuming that the waiter is already reaching minimum wage this month, then refusing to tip means that the waiter is only earning $2-$3 per hour for the time spent serving you. They cannot very well be earning less than minimum wage per hour if they already have gotten more or equal to minimum wage for the month in tips. Do you mean they are earning only $x per hour over minimum wage for serving you?