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