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