Becoming a training supervisor, I expected there would be some serious training in communication, and how to manage people. I was let down when I realized learning the job came down to computer modules (which I was told to skip through), and one 10minute class with an insurance company rep on how to give feedback, which was pointless.
If you are not as competent as you think you should be, but working to be competent, you will be reminded of how incompetent you are often by your peers. The culture of the ups supervisor position is competition between one another based off everyone’s own insecurity.
They also won’t tell you what you are doing wrong, but rather put you in a tough situation to make you realize what you are doing wrong, identical to the abuse they do to hourlies they want to quit... It’s a scrutinized position, with no regards to personal ambition. The managers mainly care about paper work to save them from claims, so if you can learn that, you will be fine to stay, but how you handle your new hires, you will be criticized. If you think that politics are not a thing in a management position, you are wrong.
Finally, you are constantly doing union work. You will be a glorified hourly without the protection of the union. So before you think about moving up and getting that pay raise, think about whether or not you want to be abused with a collared shirt on. Anyone can do it, few choose to, and that’s for good reason.