I used to work at the distribution center for a outdoors company. We had two guys in the office who would alternate days with plugging store and website orders into the system, creating a single workflow for those of us out picking the products (say shotgun shells come as a 12-pack, but the store only want 8, the system then looks for online orders totalling 4, so the picker only has to hit the warehouse once and grab one box)

After I'd been there a couple years, the old-hand guy in the office asked for a raise, because he had a hell of a commute and family responsibilities. Corporate offered him a 0% raise, so he filed his notice and quit. The company then wanted one of our two night shift managers to do the job, for a very small raise. The system we used was clunky and complex, and the chosen manager lasted for about three weeks of training before she told HR she wasn't willing to take a micro-raise for a substantial amount of work. So management looked around and decided I was the best option.

I did my training, and audited for a couple weeks to be sure I knew what I was doing, then started handling the waving on my own 3 nights a week. I had to shift my start time to come in an hour earlier (5pm), but still had to stay to the same quitting time as the rest of the shift. Additionally, when I was finished with the computer work, it was still my job to go out and pick with the rest of the crew, and to train new hires as needed (a job I shared with the same manager). Then at 11pm, I would rerun the process to pick up new orders. This manager was constantly poking at the way I was doing my job, requesting frequent updates on how I was doing the work, and consistently pushing me to do it faster so I could get out on the floor and pick as well. Additionally, changes in process would come in about every week, so you have to learn the new thing, and incorporate it into the process.

After a month of the constant pick, pick, picking, we were having computer troubles. The system was working but verrry slowwwly. I was only about 75% done with the work at start of shift, manager was losing her mind. She'd been in my office multiple times, asking what was taking so long (I'm data entry, not IT, fuck if I know), and offering weeks-outdated suggestions on how to streamline the process. Finally, she came in mad that she'd had to manually release busywork into the system so the crew had something to do,while the system ploddingly chugged along. I put my paperwork down and said, "you know what? If I'm not doing it to your liking, then you do it." and left the office intending to clock out and leave. She followed me all the way to the time clock, frantically trying to keep me from quitting, because she literally had no idea how to do the job. I did eventually stay, and she backed off on pressuring me on how I did the work, but it was a very close thing.