The Fayette County Commission shall establish a shop and unit road system for the operation of the county roads and bridges. The county engineer shall, at each October meeting of the county commission, make recommendations for a yearly work plan and present budget information for the new year. The commission at its regular meetings shall discuss needs as they arise and vote on all issues that might affect the county. The chair, with approval of the county commission, shall manage the daily operation of the county commission. It shall be the duty of the county commission to fix, from time to time in accordance with prevailing economic conditions, the number of employees and the various scales of wages or salaries to be paid for labor necessary in the maintenance and construction of roads, bridges, and county shop operation.