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