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