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