I've been working at a company for three years. I'm very conscientious and hard working. I'm not good at office politics and however much I try to be more assertive I'm quite a shy person.
In recent months I made some informal complaints to my then managers manager, explaining issues with stress, pressure and unfair behaviour towards me, for example asking me to complete a report in one day where a co worker would be given several days. I had numerous examples of this. The result of my complaint was that I was moved to a different team. However, my stress continues as colleagues often don't pull their weight still and the buck always stops with me, they know I'm conscientious and so seem to take advantage of it.
There are a few nice people where I work but on the whole they are manipulative and unprofessional, often bullying.
If I resign I won't easily get a job elsewhere as I only work part time school hours and the pay is good. I could afford to resign though money would be tight. I don't like to be beaten by bullies but I know going to HR would be pointless, I don't want to be signed off again by doctor and wonder Aibu to think Health comes first and some workplaces are just rotten and unethical and it's better to just leave than keep fighting a losing battle?