Can a hostile work environment and severe psychological abuse by your employer cause ptsd?

Possibly: The stressors would need to be pretty severe if that were to occur. However, if a person already had PTSD then the work place issues could exacerbate or trigger further symptoms.

Stress reaction: PTSD is a formal psychiatric diagnosis for a syndrome of that occur in veterans after military service or other people subjected to prolonged and inescapable severe stress. Hostile work environments can be extremelyunpleasant, but they are more likely to cause an acute (short-term) stress reaction that will eventually resolve. Importanly, you can leave the work environment to lower the stress.