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