Korea has a national health insurance system that is sponsored by (a) goverment agency. It is (a) universal system that covers almost everyone in Korea. The monthly  insurance fee you (pay) varies depending on income level, property value, and even what type of car you own. 

However, the benefits you get (at) clinics, hospitals, drug stores are pretty much the same. Of course, there are private health insurance policies, too. But those are typically for major illness such as cancer. Meanwhile, Korea also has a national pension system. Under the current law, practically everyone with (an) income has to join (this) pension system. There are seperate pension (schemes) for civil servant(s), private school teachers and military personnel.  In addition, most companies provide their employees with seperate retirement benefits as well.