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