Alhaji Mohammed Sani-Omolori, who is the Clerk of the National Assembly (CNA), has been sacked.
He was dismissed by the National Assembly Service Commission (NASC) on Wednesday.
A total of 149 others were also sacked alongside the Clerk.
Olusanya Ajakaiye, the Secretary of NASC, was among those sacked as contained in a letter by the Commission.
According to the Commission, any staff who has spent 35 years in service or is 60 years should leave and would receive their retirement letter soon.