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