It goes way beyond pay and benefits with some mgrs. Some will surround themselves with buddies or brownnosers and treat others like crap for no good reason. Knew a mgr in the hub who treated black co-workers like gold while being really nasty to all the whites(he was white). Turned out about 6 months before I was hired his black employees filed a discrimination claim against him. He had to go through sensitivity training. So he was careful only to vent towards whites from then on. Knew a mgr who had two swings work like crazy to make couriers look bad, then came down really hard on those couriers. Mgr who had sex with part-time CSA in supply closet, she got promoted to FT courier over two FT CSA's who wanted job, and nice older couple who cleaned station got fired after he saw them going at it in closet. Plenty of other stories. Seen some really good mgrs over the years but most of them weren't. And they deserve what they get if they're screwing employees, literally or figuratively.