This is something that you should consider for two reasons. The first is that it takes some time to setup your Medical insurance in Korea (under your contract you are given full medical coverage) so should you wish to cover all the bases and have medical insurance you have to set that up. Additionally, the insurance that you are provided with only covers you when you are in Korea and not when you leave the country. You may have some short term insurance for this instance. Please inquire with your InterKrest representative, should you want some suggestions for medical insurance.