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