Koreans are more difficult to work for than the Japanese.
The Koreans aren't afraid to... "Stick it to the foreigners" if need be, where the Japanese try to put on a façade of being polite.
Koreans have a belief of “Self Juche”, or Self Reliance. This is more prevalent with North Koreans, but applies to South Koreans as well. It’s one reason Korean Air Pilot’s can’t stand the fact foreigners are flying for the national airline and not Korean nationals. And one of the reasons they make it difficult to work for Korean Air. And to a lesser degree, Asiana. The bottom line is… ”you’re not welcome.”
The reason your there is of course...airline accidents.