It's Ulsan, once more.
There are great opportunities in Seoul, Daegu and Busan.
Don't waste your time in Ulsan, the heart of Korean corruption and pollution.
Up the street from this Yes Academy, was a Ding Ding Dang School (yes, that is the name, it's a chain.) At this one, the Director continually tried to match up the female native English teachers with his buddies, whether or not the teacher wanted it. He would actually tell his buddies where the native English teacher lived. The preference was for young blond women. This director of this Ding Ding Dang and the director of Ahil English School were active members of the Ulsan English School Association. This association fought hard to "buy" their right to fire native English teachers for being in the hospital without notice, without warning, regardless of employment contracts.

If you want to teach in Korea, insist on being enrolled in the National Medical Insurance plan, otherwise if you get sick and you are not properly insured, the hospitals will not treat you, no matter how sick you are. If you don't have insurance they will let you die.