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