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