There are rare exceptions, but don't think of anyone at work as a friend. I hate this, but I've learned to trust *almost* no one. Even people you've worked with for years. You'd think spending 40 hours a week with someone, through good times and bad would build a real friendship. Unfortunately, there are people that will stab you in the back, if they think they can get brownie points. Basically, don't say anything to a coworker that you wouldn't say to your boss. After getting burned a couple times over the years, I still have to catch myself becoming too chummy with coworkers.