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