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