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