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