My boss is quite hard to work for. After not receiving a wage rise for 10 years (aside from minimal increases across the board due to the rising cost of living) I recently asked for a wage rise with the (private) intention of quitting if refused. I was granted the rise and that has suited me well because I really enjoy my job. Therefore my current intention is to stay long term.
However multiple employees have confided in me that they are strongly thinking about quitting. I understand their reasons because I previously considered these myself. I know for some it may come to nothing. But I know of others who are actively interviewing elsewhere, and who therefore are very serious about leaving.
This will have a massive impact on our team, on our work and on the business as a whole. In fact, multiple people leaving at once could near cripple us, at least for a while.
My boss has had numerous staff members raise complaints with him privately over the months and years. I have also written reports twice previously to show that we are understaffed and overworked. However almost all of this seems to go over his head, and he rewards staff members' successes with more work but no thanks.
So while he must have an inkling that there is mass discontent, I feel confident in saying that he is (whether by choice or not) vastly unaware of how critical this is becoming.
Should I tell him? He may want to know who is thinking of leaving and that's information I would refuse to give him, which would possibly cause me more problems. If I do tell him that there is a general problem I can't be certain he would act upon it and improve things, and it might look like I am spearheading complaints, which is not an image I want to portray. However, if I say nothing, and multiple people quit as I believe they will, then not only will it affect my job, but my boss may wonder why I didn't speak up. What would be the advisable course to take?
(Just to be clear on my job, I am supposed to supervise the work of about half of the staff. We do have a manager in charge of HR who is in between us and the boss, but she is on long term sick leave, in part due to stress caused by my boss, so I currently report directly to him.)