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