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