Apartments have either 110 or 220 volt outlets or both. For 110 volt outlets a tranformer is required. Teachers are governed by the same regulations as Koreans with regard to premium rates, payment of benefits, and coverage. Membership is available to all Korean employees and foreign employees who have a valid visa allowing employment and a residence certificate. Membership is by group only.
Coverage is only valid inside Korea.
For this reason, some teachers buy travellers insurance. Membership is for specific regions and treatment must be received within that region except in the case of emergencies. Coverage extends from the date of joining to the date of termination of employment. Due to requirements from the Immigration and Taxation departments, coverage commences 4 - 6 weeks after arrival in Korea. The percentage of total costs covered by the policy varies with the type of illness being treated.