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