I could never be a bartender thats for sure! I kind of do something similar, although I don't absorb it as my own issue...I just absorb the mood! So if there is a day when everyone in the office seems to be moaning/upset/annoyed then that gets added to whatever I'm already feeling. I do try to shut myself away in my own bubble to avoid being affected but it always seems to seep in somehow. And once it's there it doesn't leave :/