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