You know who they are -- that one team member whose behavior ruins projects and the concept of teamwork for everyone else. Here's how to handle the five worst offenders.

Credit: Thinkstock
How to handle toxic coworkers
1. False promises

Image by Thinkstock
2. Along for the ride

Image by Thinkstock
3. I did it!

Image by Thinkstock
4. Whine with cheese

Image by Thinkstock