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