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