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