'I don't want that door locked; I quit': Employee owes $18,000 to company after she changes entire doorknob to storage room, then quits

Promotions at work can leave a bittersweet aftertaste in your mouth; on the one hand, your financial situation improves along with your increase in salary, but on the other hand, your coworkers may develop a deep disdain towards you overnight. In this case, OP got promoted to being in charge of daily operations at a small municipal department they both worked at, and a Karen employee didn't take kindly to OP's new position. Karen was the type of obnoxious employee who complained that she was the only one doing anything at work, while not actually doing anything.In any case, there happened to be a storage closet filled with a variety of items, some of which included work uniforms. She disliked the fact that the door was locked so much that it dawned on her one day to switch the entire doorknob without informing anyone of the fact. One of the major problems with that, besides the blatant disregard for human decency, is the fact that the employees were first responders to emergencies in the town, and they were unable to collect equipment from that room.Another point she didn't take into account was the fact the company was paying for some of her education, so she ended up owing $18,000 to them. Scroll down to read about the aftermath of her decision. For more stories like this, here is a petty neighbor who got his when he messed with the wrong resident in his HOA.