The County Public Service Board is established under Article 235 of the Kenyan Constitution which contains the provision for the staffing of county governments.

Article 235 stipulates that the county service board is responsible for:

• Establish and abolish offices in the County Public Service.
• Appoint persons to hold or act in the office of Public Further, County Offices including in the boards of urban areas within the county and to confirm appointments.
• Exercise disciplinary control over and remove, persons, holding or acting in those offices as provided for under this part.
• Prepare regular reports for submission to the county assembly on the execution of the functions of the board.
• Promote in the county public service the values and principles referred to in Articles 10 and 232 of the Constitution of Kenya 2010.
• Evaluate and report to the county assembly on the extent to which the values and principles referred to in Articles 10 and 232 of the Constitution of Kenya 2010 are complied with in the county public service.
• Facilitate the development of coherent, integrated human resource planning and budgeting for personnel emoluments in the county.
• Advise the county government on human resource management and development.
• Advise county government on implementation and monitoring of the national performance management system in the county.
• Make recommendations to the Salaries and Remuneration Commission, on behalf of the county government, on the remuneration, pensions and gratuities for county public service employees.