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