Could this be Down and Out in the Magic Kingdom by Cory Doctorow. This was published in 2003, so 20 years ago. It is 208 pages long, so a short novel.
The story is set in the Magic Kingdom, AKA Walt Disney World. No money exists in the story, all is paid for by "Whuffie", which is basically good-will or happiness that people give to others in return for their service/work/entertainment/goods.
The story is told by Julius, who works at his childhood-dream job of Disney world which is run by teams of people competing to provide the best experience for the visitors. Julius wishes to die, but has low Whuffie and doesn't want to die in that state. People are able to regenerate/revive after they die and there is a complicated plot involving murder that allows a rival team to take over one of the Disney exhibits so that they can revamp it (and thereby generate lots of whuffie for themselves), which Julius exposes and somehow results in him going a bit "off the deep end".
It's been many years since I read it, so my summary may be a little mixed, but it was a decent story.