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