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