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