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