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