Well, . . . it ain’t easy. It depends mostly on whether the company has a hr department run by actual sociopaths/psychopaths. Sociopaths/psychopaths love being in hr, they get to play puppet master. If that’s not the case there’s still the question of how to overcome the hr reps’ assumed-similarity/assumed-normalcy bias — facts can overcome a bias or syndrome but will just bounce off an assumed-similarity psychotic (one should keep in mind that that assumed-similarity comes in all flavors: bias, syndrome, disorder, psychosis — incidentally the same is true for naive prey response syndrome). See https://pathwhisperer.info/2015/11/02/assumed-similarity-bias/, https://pathwhisperer.info/2011/02/11/a-search-today-i-am-the-target-of-a-sociopathic-bully-what-do-i-do/.
My experience with psychopathic harassment was while working for UBS, which I consider to have a psychopathic history (as essentially Nazi bankers during WWII and the later holocaust gold scandal), psychopaths in management, psychopaths in human resources. Actually I consider UBS to be psychopathic entity. I should have left early on.