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