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