What was "The Incident" at work that caused an exodus in the work force?

I am a union member so this isn't a thing that happens. If management does something unacceptable, we do a strike authorization vote which, if passed by the membership, starts a clock ticking down to strike time and management knows that they are on notice and need to start negotiations.

All of which is just to say that unions are good for workers, regardless of what kind of bullshit you may have been led to believe.