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