I am of the belief that it takes a certain kind of douchebaggery to become a manager or supervisor in a corporate. Nine times out of ten, these people have history, being the Jock at high school, the bully, and they carry this over into the workplace.
I have changed jobs close on 23 times to get away from various forms of bullying. The key predisposing factors are that they seem to target those who are quiet, and get on with the job. The louder and more outgoing you are in a company, the more likely it is that you will be able to join the clique and become untouchable.
I have come to realize that, certain oddities of my personality and my nature, are a juicy target for bullies, and in recognizing this, I have of late, managed to avoid taking a job where this is likely to happen, unfortunately trading that for a different set of problems, i.e. unrealistic expectations, and workload overload, not to mention disgustingly poor pay and unreasonable working conditions.
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Sonic The Hedgehog Forever!