On or before the first Monday in January in each year, each district overseer of highways appointed by the board of county commissioners shall make a report to the board of the overseer’s doings as such during the preceding year, the amount of labor performed, and the number of days’ labor necessarily performed by the overseer in the discharge of the overseer’s duties, and the board of county commissioners thereupon shall cause a warrant to be drawn on the county treasurer in favor of such overseer for such services.