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