labor office communication Korea resigning job korea employer shutdown foreign worker Korea foreign worker visa korea rules job change korea immigration work compliance foreign worker job change notice period korea fired in Korea visa foreign worker job change korea visa violation part time korea jobs in Korea for foreigners foreigner jobs Seoul visa sponsorship Korea non-teaching jobs Korea e7 visa job change korea work visa status part-time jobs Korea JobKorea teaching jobs Korea korea employment visa salary not paid Korea foreign worker Korea unpaid wages foreigner Korea unpaid salary Korea foreigner Korean labor law foreigners labor rights foreigners Korea job change visa korea process foreign worker korea immigration reporting steps work visa korea rules job change Korea foreign worker side job korea freelance jobs Korea workplace change Korea Saramin Kowork severance pay Korea company closed Korea visa foreign worker unsafe work Korea foreign employment law korea job termination Korea foreigner change job korea visa visa reporting deadline Korea foreign worker mistakes Korea foreign worker severance Korea expat career Korea labor office Korea retirement pay Korea Korea job search guide Seoul Global Center LinkedIn Korea visa reporting timing Korea foreign worker resignation XpatJobs Korea job platforms workplace change reporting Korea foreign worker E-7 visa Korea unpaid severance Korea work in South Korea 2025 unpaid wages Korea KOTRA job fair work visa korea employer no response Korea foreign worker reporting delay Korea foreign worker ghosted Korea quitting job Korea foreigner English jobs Korea labor office foreign workers Korea