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