I think getting to emotional at work is its own problem. If you could just control your emotions after work, you could probably temper them enough during work to not have this be an issue.

For emotional health, it seems rather arbitrary to draw a line between 'at work' and 'at home'. The only real difference may be in what those environments consider acceptable, but you can't just switch between intensity levels. Emotion is, kind of by definition, not fully within your control.