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