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