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