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