The KTPF (Korea Teachers' Pension Fund) has published a useful guide for foreigners in English about the pension scheme. There's info about retirement, taking a loan out against your pension, switching to the public pension, and more. Here's the link to PDF guide.
NB: I won't be blogging at TEFL Tips during December or January. While I'm on break you can read posts by other TEFL Tips authors as well as my other blogs. I will start blogging again at TEFL Tips in February.