What his Chair has been doing to him is，though well within her authority，unethical and unfair. The questions are: Can he fight the unfairness? Is there a chance for him to win? Is there a tool such as Title IV or any other law or regulation protect him from being treated unfairly? Or the only thing he can do is to take the loss and move on with a ruined reputation?
bargaining agreement 里面查找departmental chair 的 responsibilities ， 根据那些条款，看他是否违章。再有去学校的 social equity office 进行compliant，根据其中的条款，看系主任行为是否属于骚扰范畴。关键是，要找到他违反的规章制度条款，才能有 case。 说实话，人生苦短，如果不是因为他必需完成目前在做的研究项目，退休未必是个坏事。先请一个学期的病假，看看不上班是不是更好？
这个不算unfair。因为是从需要进行的安排。如果说，别人都是教9 个学分，而他必需教12 个，那是unfair。你给的都是结论，不是fact，没人可以回答你的问题。bullying 到处都有，这个只能采用行政手段，不是法律。
grant support to support his salary, etc. It is time for him to retire, if he does not have external support anymore. Of course staying the postion will allow him to earn more money, but 吃相太难看了
some ugly words. Some people just want to stay in the position to earn more money.
he can retire and keep part of his lab to work. He will mostly use his own retirement money and the payment from school will be reduced. If he does not have external grant support, it usually will not work. It is time for him to retire.
Incompetence as an excuse. Having to teach new course(s) every semester, his research will suffer and he will not be able to remain productive in research for long
那就不退休啊，扛着。他都是tenured full professor，学校不能轻易解雇他。看来学校没有工会？不行了找律师。
after he took the case to HR.