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