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