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