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