employer no response Korea non-teaching jobs Korea company closed Korea visa job termination Korea foreigner teaching jobs Korea foreign worker job change korea work in South Korea 2025 e7 visa job change korea fired in Korea visa work visa korea rules foreign worker job change foreign worker unsafe work Korea part-time jobs Korea expat career Korea Kowork labor office communication Korea job change visa korea process foreign worker korea immigration reporting steps workplace change reporting Korea foreign worker visa reporting timing Korea foreign worker side job korea English jobs Korea quitting job Korea foreigner work visa status Korea job platforms jobs in Korea for foreigners foreign worker reporting delay Korea labor rights foreigners Korea foreigner jobs Seoul labor office foreign workers Korea foreign worker mistakes Korea change job korea visa korea employment visa foreign worker ghosted Korea Saramin resigning job korea JobKorea LinkedIn Korea foreign worker visa korea rules job change korea immigration work compliance KOTRA job fair unpaid wages foreigner Korea visa reporting deadline Korea unpaid salary Korea foreigner Seoul Global Center Korea job search guide visa violation part time korea foreign employment law korea notice period korea freelance jobs Korea employer shutdown foreign worker Korea XpatJobs foreign worker resignation work visa korea visa sponsorship Korea