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