foreign worker severance Korea teaching jobs Korea salary not paid Korea JobKorea foreign worker Korea labor office communication Korea unpaid severance Korea foreign worker visa korea rules job change korea immigration work compliance resigning job korea freelance jobs Korea Seoul Global Center expat career Korea foreign worker side job korea employer shutdown foreign worker Korea work visa korea Kowork labor office foreign workers Korea employer no response Korea foreign worker job change korea unpaid salary Korea foreigner retirement pay Korea Korean labor law foreigners job change Korea foreign worker ghosted Korea part-time jobs Korea quitting job Korea foreigner work in South Korea 2025 Saramin work visa korea rules labor rights foreigners Korea foreign worker resignation notice period korea Korea job platforms change job korea visa E-7 visa Korea unpaid wages foreigner Korea unpaid wages Korea workplace change Korea job change visa korea process foreign worker korea immigration reporting steps visa violation part time korea visa reporting timing Korea foreign employment law korea job termination Korea foreigner English jobs Korea visa sponsorship Korea LinkedIn Korea workplace change reporting Korea foreign worker jobs in Korea for foreigners XpatJobs visa reporting deadline Korea non-teaching jobs Korea foreigner jobs Seoul foreign worker reporting delay Korea company closed Korea visa work visa status severance pay Korea foreign worker unsafe work Korea korea employment visa foreign worker mistakes Korea e7 visa job change korea fired in Korea visa Korea job search guide foreign worker job change labor office Korea KOTRA job fair