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