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