Dealing with Conflicting Personalities in the Workplace
I work in a very demanding field. I have my main boss and she has 3 people under her that I directly support. One of the three no matter what I do has an issue with me. I do my job with 99.9% accuracy, no one is perfect we all make a mistake here and there. This one person complains all the time that they have way too much work, can never meet a deadline, asks for meetings to be moved that were planned well in advance because it doesn't meet their schedule. On top of this, this person also likes to take on other projects that I normally would be doing just to try to make them look more impressive and then joins all of these external organizations for professional development. Then when I complete something, this person is the type that will go behind my back to redo it and send it to the boss.
What does a person do? If you confront the person they deny that they are doing anything wrong. The boss doesn't seem to care as long as someone is doing it. At the same time this person is taking work away from me leaving me with less to do and them complaining more and more about that they have too much to do. Also, when I take a day off here or there, I get called unreliable and get told that I could have been used but instead was gone, whereas said person takes extended vacations a few times a year and will call in sick with a sneeze.
What do you do in this situation? Grin and bear it? I've tried speaking up and it gets me nowhere.