The state I work in is an "at will" state, so you're right that I'm at the whim of my employer. I also need health insurance to cover my ongoing treatment, and

The state I work in is an "at will" state, so you're right that I'm at the whim of my employer. I also need health insurance to cover my ongoing treatment, and sometimes it feels like my employer knows that as well. Why would they worry about how they treat me when they know that there's no way I can just leave?