How is opportunity cost related to the supply of labor? Nhm la chn cu tr li The opportunity cost of working one more hour is the loss of one hour spent on nonmarket activities. This means that the quantity of labor supplied would decrease if the value of nonmarket activities increased. The opportunity cost of working one more hour is the rise in wages. This means that the quantity of labor supplied would decrease if the wage rate rose. The opportunity cost of working one more hour is reflected by the level of education of the worker. This means that the quantity of labor supplied would decrease if the level of education decreased. There is no opportunity cost of working because almost everyone has to work to be able to survive. This means that the quantity of labor supplied is unchanging