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