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