For me it was the collective solidarity during the manual data entry shifts we did when elections came around. Those were some of the most soul crushing experiences of my life, and the incredible feeling of coworkers you didn't even know that well covering for you as middle management wondered where I was (I had to take a short bathroom break because I couldn't take a leak for hours) were so heartwarming. Of course there also was all the bad stuff: lying to customers who were having real problems that you couldn't do anything about, being insulted by people you called for a survey and you can't even seriously argue against them, terrible pay, the list goes on. If you have anything to contribute, please do so! I'd love to hear your perspectives.
Not trying to dox myself, but I live in east Germany. I worked for a company owned by one of the largest banks over here, and they operate a service to block your debit card when you lost it or it was stolen. One of my favorite coworkers was a guy in his late 60s called Hans, and the fact that he had to work for a living even though he was past retirement age was heartbreaking to me. We started to talk between calls and it turned out that when he was my age, he went to a university in Leipzig to study Marxism-Leninism (this was obviously during GDR times). He was so well versed in theory that it seriously took me aback (he pretty much called me a lib quite a few times and that was a large part of my journey leftward lol); the people his age (at least those that I know personally) all dislike the pre-1989 period, and having someone to talk to between soul crushing calls with people whose livelihood was threatened because of a piece of plastic that was taken from them was one of the only things that kept me sane at that place. I'm so glad that after two years I finally got out of there, but sometimes I wonder how he and some of my other coworkers are doing right now.