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