The County Assembly of Siaya currently has 35 staff, seconded from the Siaya County Government, and who serve in various departments.
The departments are:
- Clerks / Administrative Department
- Human Resource Department
- Finance Department
- Procurement Department
- ICT/Hansard and Research Department
- Works Department
- Serjeant At arms department
- Internal Audit Department
The Assembly is currently in the process of recruiting officers to serve in these departments and also other departments that would have been created to ensure proper operation of the County Assembly of Siaya.