I'm not asking about the worst job. I'm asking about the grimmest one. For me it was when in my teenage years I was making candles you would put on a grave. Most of the time is was just filling the form, burn the right shape and passing it forward. But sometimes I had to fill in for a person who was selling these things, and that is where it gets grim. It was decades ago but I still remember one lady who asked what would be the best candle to memorialize her late husband. And she gave me the whole life story of her and her husband. I shit you not, it was the most touching love story I have ever heard. I quit the next day.
It wasn't the employment itself that was grim, but a specific job on it that was creepy as fuck. When I was installing for a WISP we had a job at a mortuary. Place was old as shit and we (I say we but I was the only fucker down there) had to go under the building in just this dirt crawlspace to run cable. I swear I thought I'd end up crawling over skeletons, it looked like something out of a horror movie down there.
My wife was recently mostly in charge of opening up a new branch library in town in a former funeral home (see my thread in c/pics!) and it has not bothered her at all. Not even the fact that they had basically strip everything in the basement to get the smell of embalming fluid out of the walls.
I don't believe in anything supernatural, but that's still creepy.
That said, it's now a beautiful and welcoming space for the community.