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