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