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