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