Which is an example of a labor law? Responses restriction of underage workers to 20 hours per week restriction of underage workers to 20 hours per week requiring that 15 percent of assets be kept on hand in a vault requiring that 15 percent of assets be kept on hand in a vault limiting the price of a gallon of gas to $2 limiting the price of a gallon of gas to $2 limitation of two houses per acre in the residential section of a town