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