suppose that you have been working at your job for one year and are considering asking your boss for a raise. your super-helpful economics professor cautions you to be aware of the elasticity of demand for labor before you do. what is the elasticity of demand for labor? a measure of how much firms' profits are affected by changes to wages. a measure of the extra revenue earned by the firm resulting from hiring one more unit of labor. a measure of how upset your boss is when his employees ask for more money. a measure of how responsive firms' supply of labor is to changes in the wage rate. a measure of how sensitive the amount of labor firms will hire is to changes in the wage rate. a measure of the sensitivity of wage rates to the unemployment rate.