As the title suggests. Do you have a hard three strikes rule? For me when a manager does something that is wrong – that's a strike.
He gets three, I resign. He/She just doesn't know when and I pick the time.
Strikes.
1. I injured my right hand so I couldn't use a mouse or keyboard and was off work for a week (with Dr certs and all). I get back to work, first day back he asks me if I've finished my report!
2. Questioning my integrity and timesheet hours. When travelling FOR WORK, its on the clock. I show him the taxi trip time stamps.
3. Yesterday – asking me to do other people's work. The difference here is that we work in a regulated and licenced industry. I outright said I'm not doing X because it's the job of a Structural Engineer. He persisted.