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