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