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