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