The workload for a MEP is very heavy. If you get certain managers, their expectations will be both unreasonable and poorly communicated. It was never clear to me when my manager was happy with my work or unhappy. It often felt like I was left alone to my own devices to a degree at which I was floundering for information or wholly micro-managed with nothing in between. My boss needed the team to think and act like them or they didn't know how to work with them or teach them. The boss often emailed and expected results late into the evening hours. The boss had a mercurial personality that would determine the success or failure of any given day.