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