My supervisor accused me of various greater and lesser lies about my behavior, and transmitted these lies to their supervisor (at least), and probably HR. I requested an investigation more than once and was denied. It would have been very easy to prove the lies were false, if an investigation...
I know they don't have to hire me back, but the question is about internal defamation. I can't prove any direct external defamation has occurred. But I had a long history and excellent reputation internally that has been ruined by lies. Practically all of my career opportunities are within the...