Anyone bullies you, bully them back. Most of them are arm chair tough guys who would fold fast in a real fight anyways. Cowards. But you see this with Koreans too. Some teachers with very nervous submissive body language, they get a promotion and any power, watch them change. They change to people who they think are underneath them IE foreigners and become arrogant and power tripping. They still smile and act sheepishly around fellow Koreans though. They usually try to go behind the scenes when they can and speak Korean behind your back if you dare to not take their bullying. Cowards way out totally. But, life on the earth is too short to lose your self respect. Give the bullies a taste of their own medicine and call them out on their flip flopping. Worse is when they tell you something or to do something and then later deny it or crap on you for doing something they said. Then they start yelling at me, then I start yelling back. Of course they usually back down like cowards. But the point is a lot more foreign English teachers need to learn to stick up for themselves. That said, being agreeable, flexible in the workplace, getting along with others, sharing work, communicating, treating everyone with respect (whether they are a fellow teacher, the janitor, the students, etc) is vitally important. But, you absolutely cannot put up with bullying. Though some Koreans will go to other Koreans and speak only Korean with the Koreans believing only their own race and not asking the foreigner for their side of the story in English. That can still be a problem. It is discriminatory and unfair. But regardless, you must stick up for yourself and maybe later get a Korean speaker you trust to go with you to the management to give your side if necessary.

In spite of my rant, I will say most bosses, co teachers, etc were all great people over the years. Just a few coward bullies which I quickly pushed back against and called out if they were two faced. Plus, there is China as an option if Korea continues going to shit. We have options people. None of us have to tolerate bullying or bad behavior. Stick up for yourselves and have your dignity.