20) Which of the following will cause a shift in the demand curve of labor?
A) An increase or decrease in the productivity of labor.
B) An increase or decrease in the demand for the product labor produces.
C) A decline in the price of a complementary input .
D) all of the above
21) Which of the following statements is true about the market demand curve for labor?
A) The market demand curve is the sum of the individual firm s demand curve.
B) The market demand curve will be perfectly inelastic since firms need labor.
C) The market demand curve shows the quantities of labor demanded by all firms in the
industry at various marginal products.
D) The market demand curve depends upon labor productivity, the wage rate and the price
of the final product.
22) Suppose there are 1000 firms in a market and all are identical. Firm A will hire 20 workers when
the wage rate is $10, 25 workers when the wage rate is $9, and 30 workers when the wage rate is
$8. The equilibrium wage rate for a number of years has been $9. If the wage rate falls to $8, we
know that
A) the quantity demanded for the market will increase to 30,000 workers.
B) the quantity demanded for the market will increase to more than 30,000 workers.
C) the quantity demanded for the market will increase to less than 30,000 workers.
D) the quantity demanded for the market will increase, but we can t tell which of the above
answers is correct.
23) The price elasticity of demand for labor will depend upon all but the
A) price elasticity of demand for the final product.
B) price elasticity of supply for the final product.
C) time period being considered.
D) availability of substitutes for inputs.