This is going to sound so bad, but I have had numerous dating experiences through work.
Only 1 out of the group worked, but we broke up for about 9 months and tried again recently. We no longer work together, actually we no longer even live in the same state. It seems to work for us.
I have only had 1 situation that ended badly. Being in a hospital, you are exposed to many, many people and he ended up cheating on me, with my MARRIED BEST friend, that worked on the same floor. That was a little rough, but didn't stay bad long because I removed myself from the situation.