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