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