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