fired in Korea visa job termination Korea foreigner foreign worker unsafe work Korea XpatJobs JobKorea labor rights foreigners Korea foreign employment law korea foreign worker job change LinkedIn Korea notice period korea change job korea visa labor office foreign workers Korea English jobs Korea Korea job search guide unpaid wages foreigner Korea Saramin visa sponsorship Korea work visa status work visa korea Kowork employer shutdown foreign worker Korea company closed Korea visa quitting job Korea foreigner labor office communication Korea foreign worker job change korea work visa korea rules foreign worker ghosted Korea resigning job korea visa reporting timing Korea foreign worker reporting delay Korea jobs in Korea for foreigners teaching jobs Korea foreign worker mistakes Korea expat career Korea work in South Korea 2025 Korea job platforms unpaid salary Korea foreigner non-teaching jobs Korea foreigner jobs Seoul Seoul Global Center foreign worker resignation e7 visa job change korea employer no response Korea korea employment visa freelance jobs Korea part-time jobs Korea KOTRA job fair