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