A wage board may differentiate and classify employment in any occupation according to the nature of the service rendered and recommend appropriate minimum fair wage rates for different employments. A wage board shall give due consideration in the classification of employment to such items of compensation in employment as board and lodging or other factors that may be component parts of the total wage rate paid. A wage board may also recommend minimum fair wage rates varying with localities, if in the judgment of the wage board conditions make local differentiation proper and do not effect an unreasonable discrimination against a locality.
A.R.S. § 23-315