Kowork unpaid salary Korea foreigner labor office foreign workers Korea foreign worker mistakes Korea quitting job Korea foreigner Seoul Global Center change job korea visa workplace change Korea KOTRA job fair foreigner jobs Seoul foreign worker Korea freelance jobs Korea foreign worker side job korea resigning job korea LinkedIn Korea JobKorea expat career Korea E-7 visa Korea company closed Korea visa labor rights foreigners Korea unpaid wages foreigner Korea Saramin foreign worker reporting delay Korea notice period korea work visa korea rules retirement pay Korea unpaid wages Korea job change Korea visa reporting deadline Korea English jobs Korea visa violation part time korea labor office communication Korea employer no response Korea non-teaching jobs Korea foreign worker resignation Korea job search guide foreign worker severance Korea fired in Korea visa part-time jobs Korea work visa status work visa korea korea employment visa severance pay Korea foreign worker ghosted Korea foreign employment law korea foreign worker job change visa sponsorship Korea teaching jobs Korea unpaid severance Korea jobs in Korea for foreigners visa reporting timing Korea foreign worker visa korea rules job change korea immigration work compliance workplace change reporting Korea foreign worker work in South Korea 2025 job termination Korea foreigner Korea job platforms labor office Korea foreign worker job change korea employer shutdown foreign worker Korea XpatJobs salary not paid Korea foreign worker unsafe work Korea job change visa korea process foreign worker korea immigration reporting steps e7 visa job change korea Korean labor law foreigners