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