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