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