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