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