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