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