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