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