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