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