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