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