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