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