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