I decided to give notice because my mental health was starting to suffer. Working hard doesn’t mean doing work for three people. Worst of all, here if they see that you manage to somehow finish that pile of work, usually working extra hours, they give you even more work.
I basically loved my job here and I would have stayed just if my superior had some sense to realize that it was way too much work. But he did not. They would rather lose a good employee than admit that they overload people to the maximum?