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