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