Inc.com columnist Alison Green answers questions about workplace and management issues--everything from how to deal with a micromanaging boss to how to talk to someone on your team about body odor.

Here's a roundup of answers to five questions from readers

1. I can't fire my awful assistant

I'm a nurse and I work with several nursing assistants. I have no authority to hire them, fire them, or implement any kind of substantive rewards or consequences, but I am responsible for their work.

Most of them are great. One, however, is extremely unpleasant to deal with. If I ask her to do something, she will scowl and mutter darkly about how busy she is and how unreasonable I am. Sometimes she yells at me and sometimes she outright refuses simple requests. I do a lot of work that should be hers because it's easier than having a fight every time. She also bullies the other nursing assistants, talks inappropriately to patients about her personal problems and weird conspiracy theories, and the entire atmosphere of the unit is tense and miserable when she's around.