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