The state government said the workers, mainly in administrative posts, were unproductive, and were dismissed to reduce the "bloated bureaucracy" and the wage bill.
Their dismissal is the latest shock for government employees: earlier this month, 22,000 teachers were fired after they failed a competency test.
Labour unions say the government is sacking the workers to hire those loyal to the ruling All Progressive Congress (APC) party, whivh took power in elections in 2015.
They have vowed to challenge the dismissals in court.
Supporters of the main Nigerian opposition All Progressive Congress (APC) party attend a rally in Kaduna on January 19, 2015.