We have endured some from hell at some stage in our career.
Some would claim that politician, real etstate agents or used car sales people have the worst jobs.
It all really comes done to the environment and who you work for. Some of the abovementioned jobs can actually be very enjoyble. Think of being a real estate agent on Hamilton Island, how nice would that be, or selling Ferrari's to the reach and famous.
I can think of a lot worse jobs, but it all depends who you are. Jobs are as good as the environment, the pay and the company!