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