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