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