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