I recently had an argument with my supervisor about a job he asked me to do and things got a little heated. I later learned from another party, not my boss, that the guy put a negative report in my employee file about the incident and saying I didn't do the job he asked me to do properly. I thought that I had to get notified if someone put something in my file like that. So if that that's true can I sue my boss or my employer over this and collect damages? I'm probably leaving the job anyway.