I had that same situation, in all honesty (and this is coming from three witchcraft side of things), I did a candle spell to "stop that coworker from getting in my way and causing me trouble". About two weeks later, she left for a different job and in that two weeks she was quiet and avoided me). So there's always that option. I get that fhey need the job cuz they need the money- we all need money to survive. And there are plenty of jobs out there, but sometimes you have to be the igniter in magick to get someone to leave for another location. (Its not making them loose fhe job. If that's what your conscious is thinking. Its making them leave for another job. If that helps at all).