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