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