Once took over a bunch of webservices from a coworker who had found another job.
Worst bunch of copy-pasted, anti-pattern, duplicates-ridden, dead-code infected spaghettimess I ever saw.
I spent a year getting that shit into a semblance of order. You could tell for certain the guy had no professional pride or sense of maintainability.

The kicker is, after that year of getting everything in shape, I got laid off due to cutbacks.

'Hey, great work, Refactor Ninja!
Now leave, you must be needed elsewhere!'

🙄