One of my early tasks as a junior engineer involved some automation work in a warehouse. It got assigned to me, the junior, because it involved a lot of time working in the warehouse instead of at a comfortable desk.
I assumed I’d be welcomed and appreciated for helping make their work more efficient, but the reality was not that simple. The more efficient I made the technical part of the job, the more time they had to spend doing the manual labor part of the job to keep up. So the more I reduced cycle times, the less time they had to sit around and chat.
Mind you, the original process was extremely slow and non-parallel so they had a lot of time to wait. The job was still very easy. I spent weeks doing it myself to test and optimize and to this day it’s the easiest manual labor job I’ve ever worked. Yet I as the anti-hero for ruining the good thing they had going.