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