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