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