21 unprofessional habits that could cost you your job

Annoying your coworkers, while never a good idea, is one thing. But annoying your boss with your unprofessional habits could cost you your job.

To help you avoid letting your bad habits get the best of you, we asked experts to highlight some of the least professional behaviors you could demonstrate at work that will put your job on the line or cost you a promotion.

Here are 21 things you could be doing all wrong that may make your boss think you're not right for the job: