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