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