Not the worst job I had by any means, but pretty sure that's the most ridiculous one. You know when there's a coupon on your washing product or whatnot, saying "send back this coupon and get some of your money back!" ? Well, in the early 00s I worked for a few months as a temp in the office/ factory where workers open these letters. It was of course a very dull job, but also kind of heartbreaking to see how much mail we received.
A lot of this mail was sent by retired working-class women, a surprising amount of which took the opportunity to write letters saying things like "Dear President of the XXX brand : I've been using your product since the late 1960s, and I have to say I'm its biggest fan." Some of them would go on for pages, apparently oblivious to the fact that it was just some random worker, and not anyone "important", reading their prose.
Of courses our bosses told us to never lose any time reading these letters and to just throw them in the garbage, so I made it a point to always read any and all of them from start to finish.
Also, catch 22 was that when people forgot to ask to be refunded for the stamp they had used to send their letter, we weren't supposed to reimburse them for it, which basically meant they would "win", say, 30 cents, after having paid 50 cents for postage. I felt like Robin the Hood because I managed to always get the stamp money back to everyone, regardless of the fact they had asked for it or not.