quitting job Korea foreigner labor office communication Korea job termination Korea foreigner foreign employment law korea foreign worker reporting delay Korea unpaid wages foreigner Korea foreign worker ghosted Korea part-time jobs Korea visa reporting timing Korea Saramin Seoul Global Center job change visa korea process foreign worker korea immigration reporting steps notice period korea Kowork KOTRA job fair non-teaching jobs Korea foreign worker mistakes Korea fired in Korea visa teaching jobs Korea foreign worker visa korea rules job change korea immigration work compliance foreign worker unsafe work Korea company closed Korea visa visa reporting deadline Korea unpaid salary Korea foreigner resigning job korea foreign worker side job korea workplace change reporting Korea foreign worker employer shutdown foreign worker Korea foreigner jobs Seoul labor office foreign workers Korea LinkedIn Korea e7 visa job change korea visa violation part time korea foreign worker job change work visa korea rules work visa korea foreign worker resignation visa sponsorship Korea korea employment visa XpatJobs English jobs Korea freelance jobs Korea Korea job search guide Korea job platforms work in South Korea 2025 jobs in Korea for foreigners work visa status foreign worker job change korea JobKorea change job korea visa expat career Korea employer no response Korea labor rights foreigners Korea