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