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