I met my wife through work almost 20 years ago... 3 kids and 17 years of marriage later I would say it worked well. It was not a long term job though... I was managing a restaurant, on hiatus from school while I tried to get my stuff together. She was a waitress working an after school job.
If there is an obvious chemistry... or you think she might be "the one" the I say go for it. If it's just a **** buddy then your probably better off going elsewhere IMO.