Probably, E2 holders from any country other than South Africa, are required to pay into the National Pension. It’s compulsory/mandatory. Teachers from Ireland, the U.K., and New Zealand cannot receive this payment back. North Americans and Australians can go to the pension office and get this money back when they leave the country and not before.
_Yes, you may work at additional schools. You just need to register at those schools by submitting the following documents within 20 days of your contracts start date. The Geoje Office of Education must approve all teacher placements.