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