But it's not being paid to do nothing... Obviously the customer expects you to work. They expect to see you looking at code, they might even expect to see milestones being reached. What the customer does not want is anything in production to be changed. I've worked under these conditions, and what your mother
says about psychology is an understatement. This sort of work can make you seriously depressed, even if the money is great. Perhaps there are certain kinds of people who can take this, but I won't work under those conditions again, whatever the money.