Do you work with a person who doesn't "pull his weight"?
Perhaps he wastes a large part of the day playing games, or talking to friends on the phone. Or, maybe he takes extra-long breaks, and he's happy just to do the very minimum to get by.
If you work with a colleague like this, then you know how frustrating it can be. Working with someone who's lazy is always a personal challenge, but it can also lower the productivity and morale of everyone else in the office.
However, if you're not that person's boss, is there anything that you can do? Do you simply have to tolerate this "rogue," or should you confront the situation head on?