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