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