The worst job I have had so far was last summer. I was a plastic grinder operator, sounds so great, I know. It was really simple, I take the scraps of plastic sheet and put them in the grinder so that they get ground up into pellets to be reused to make more plastic sheets. Really easy, a trained monkey could do it, which meant that it got boring very quickly. It was also summer, which means that it was hot, even hotter being next to a large piece of machinery. So for 16-24 hours per week I put up with doing mind numbingly boring work, sweating ridiculously, and the only time I got to see outside was when I was coming into work and when I was leaving. It really sucked and I don't want to do it again.