Thinking About Teaching in Korea?
Read this: The Grim Realities Of Teaching In Korea.

Here's how it begins:

Stories of terrible work conditions, blatant disregard for labour laws and illegal appropriation of pay are nothing new to some English teachers in South Korea, but many who come here looking for a life-changing experience soon find themselves wishing they had never come to Korea at all.

Fortunately, I never taught at a hakwon (cram school), so was able to avoid most of what the article mentions.