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