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