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