In my time at work, I've had a fair number of jobs... (about 10 jobs in as many years.) As a result I've had my encounter with a few bad bosses...
For example in 2007 I was working for this company and at the time I didn't have my full license. (Where I live you get your license, are classed new and have that for 2 years before you can get your full.) My employer told me them to meet them at a certain location at 4AM. I refused because, as part of the restrictions of being a new driver, I wasn't allowed to drive at that time. (This is a provincial law.) To that they responded that they didn't care, that they wanted me at the site then anyway. I told them that I was not risking my license (since being caught driving during that time is grounds for immediate termination of a license) for them and that I'd see them when I could drive. They didn't like this very much... And likely because of that I didn't get much work at all. (I was only scheduled twice before I quit. The two times I was scheduled were like 2 weeks apart at that.)
So then, how about you? What kind of bad bosses have you had?