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