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