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