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