Ala. Code § 45-20-130.03: Wages and Salaries for Necessary Labor.

It shall be the duty of the county commission to fix, from time to time, in accordance with prevailing economic conditions, the various scales of wages or salaries to be paid for labor necessary in the inspection, maintenance, and construction of public roads, bridges, and ferries. The wage or salary scale shall not be exceeded by the engineer in employing labor and assistants.