How do you handle a coworker who is unreliable, has a bad attitude 24/7, and undoes your work?

Anonymous

So I work in retail as a manager in all women apparel. Celebrated one year got promoted, a raise, and lots of growth opportunity along with special training on merchandising etc. The girl I work with went from part timer to full time management. Complete b*tch. Not sure why she is still with us. She has managed to offend every coworker has made some cry. Caught her lying about why she had to take the day off on several occasions has failed to work 35-40 hours. Customers have called the store to complain or walked up to me and other members of management to complain. We had a corporate visit our (CEO) come to the store spent tons of time merchandising the store, cleaning, studying sales numbers etc… she undid a bunch of my merchandising work because she said and I quote “I don’t like any of the outfits you made”. The thing is when we look at the organization chart I one person is above her and then there is me when our store manager is gone I’m second in command if our store manager were to ever leave I’d be the next in line, since I have been trained by people from home office including the current store manager who onboarded me a year ago. I just I am so sick and tired of this girl undoing my work criticizing my work. At the beginning I was trying to build her up and train her she is easily offended no matter what and can’t handle any constructive criticism its her way or no way. Part of me wants to really call hr

How do you handle a coworker who is unreliable, has a bad attitude 24/7, and undoes your work?
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