Chapter 20 The Labor Market, Employment, and Unemployment 231
Chapter Overview and Teaching Tips
Chapter 20 provides an analysis of the labor market and answers basic questions such as: Why has the
labor force participation of women increased so much? Why have the returns to college education risen?
Why has income inequality increased? What explains fluctuations in the natural rate of unemployment,
and why is it generally higher in Europe than in the United States?
The rest of the chapter focuses on the dynamics and causes of unemployment. It is important to get students
to understand how dynamic the labor markets are with large flows into and out of unemployment, with
some workers having very long spells of unemployment. Then students should be introduced to the idea
that some unemployment is frictional and other is structural, often occurring as a result of wage rigidity.
This helps them see that the natural rate of unemployment, the unemployment rate that remains even when
◼ Answers to End of Chapter Review Questions and Problems
Answers to Review Questions
Developments in the U.S. Labor Market
1. The employment ratio, the ratio of employment to the civilian working-age population, has risen
Supply and Demand in the Labor Market
2. Firms’ hiring decisions are made on the basis of profit maximization. Firms compare the marginal
product of labor, the benefit of adding new workers, with the real wage rate, the cost of hiring them.
The marginal product of labor is subject to diminishing returns, so as the firms’ labor force increases
3. The quantity of labor supplied is positively, not inversely, related to the real wage rate. Workers have
two basic choices regarding the allocation of their time—work or leisure (all activities away from their
job). An increase in real wages makes work more rewarding and increases the opportunity cost of leisure