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