My co-worker is the same exact way. It is very difficult to not feel it. My co-worker is definitely an empath, he just doesn't know there's a name for it! I'm learning to recognize my feelings apart from everyone else's. When I know it's someone else's, I say out loud, 'that's not mine' and *poof* the emotion is gone. I also ground myself a lot while at work and I visualize negative energy being soaked up into mother earth to be recycled into positive energy. Washing my hands and visualizing the same thing also helps on highly emotional days.