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