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