What do you do when a coworker is not only not doing their job correctly, but is deliberately and regularly skipping over some duties, however small, because that person jsut doesn't like said duties? I don't want to be a tattletale, but today I was in a position where I had a lot of extra work to do because of the person who did not do their work. It makes me angry, but I don't want others to not confide in me for fear I might tell management something. On the other hand, management can promote me, my colleagues in my department cannot.

I suppose I'll just keep doing my work the right way, and eventually the truth will come out on it's own.