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