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