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Copyright©2004 South-Western
1919Earnings and
Discrimination
Copyright © 2004 South-Western
Earnings and Discrimination
• Differences in Earnings in the United States
Today
• The typical physician earns about $200,000 a year.
• The typical police officer earns about $50,000 a
year.
• The typical farm worker earns about $20,000 a
year.
Copyright © 2004 South-Western
Earnings and Discrimination
• What causes earnings to vary so much?
• Wages are governed by labor supply and labor
demand.
• Labor demand reflects the marginal productivity of
labor.
• In equilibrium, each worker is paid the value of his
or her marginal contribution to the economy’s
production of goods and services.
Copyright © 2004 South-Western
SOME DETERMINANTS OF
EQUILIBRIUM WAGES
• Compensating differentials
• Human capital
• Ability, effort, and chance
• Signaling
• The superstar phenomenon
Copyright © 2004 South-Western
Compensating Differentials
• Compensating differential refers to a difference
in wages that arises from nonmonetary
characteristics of different jobs.
• Coal miners are paid more than others with similar
levels of education.
• Night shift workers are paid more than day shift
workers.
• Professors are paid less than lawyers and doctors.
Copyright © 2004 South-Western
Human Capital
• Human capital is the accumulation of
investments in people, such as education and
on-the-job training.
• The most important type of human capital is
education.
Copyright © 2004 South-Western
Human Capital
• Education represents an expenditure of
resources at one point in time to raise
productivity in the future.
• By the year 2000, a man with a college degree
earned more than 89 percent more than without
one. Women showed a 70 percent increase in
earnings due to a college degree.
Table 1 Average Annual Earnings
by Educational Attainment
Copyright©2004 South-Western
Copyright © 2004 South-Western
Ability, Effort, and Chance
• Why has the gap in earnings between skilled
and unskilled workers risen in recent years?
• International trade has altered the relative demand
for skilled and unskilled labor.
• Changes in technology have altered the relative
demand for skilled and unskilled labor.
Copyright © 2004 South-Western
Ability, Effort, and Chance
• Natural ability is important for workers in all
occupations.
• Many personal characteristics determine how
productive workers are and, therefore, play a
role in determining the wages they earn.
Copyright © 2004 South-Western
An Alternative View of Education: Signaling
• Firms use educational attainment as a way of
sorting between high-ability and low-ability
workers.
• It is rational for firms to interpret a college degree
as a signal of ability.
Copyright © 2004 South-Western
The Superstar Phenomenon
• Superstars arise in markets that exhibit the
following characteristics:
• Every customer in the market wants to enjoy the
good supplied by the best producer.
• The good is produced with a technology that makes
it possible for the best producer to supply every
customer at a low cost.
Copyright © 2004 South-Western
Above-Equilibrium Wages: Minimum-Wage
Laws, Unions, and Efficiency Wages
• Why are some workers’ wages set above the
level that brings supply and demand into
equilibrium?
• Minimum-wage laws
• Market power of labor unions
• Efficiency wages
Copyright © 2004 South-Western
Above-Equilibrium Wages: Minimum-Wage
Laws, Unions, and Efficiency Wages
• Unions
• A union is a worker association that bargains with
employers over wages and working conditions.
• Strike
• A strike refers to the organized withdrawal of labor
from a firm by a union.
Copyright © 2004 South-Western
Above-Equilibrium Wages: Minimum-Wage
Laws, Unions, and Efficiency Wages
• Efficiency Wages
• The theory of efficiency wages holds that a firm can
find it profitable to pay high wages because doing
so increases the productivity of its workers. High
wages may:
• reduce worker turnover.
• increase worker effort.
• raise the quality of workers that apply for jobs at the
firm.
Copyright © 2004 South-Western
THE ECONOMICS OF
DISCRIMINATION
• Discrimination occurs when the marketplace
offers different opportunities to similar
individuals who differ only by race, ethnic
group, sex, age, or other personal
characteristics.
Copyright © 2004 South-Western
THE ECONOMICS OF
DISCRIMINATION
• Although discrimination is an emotionally
charged topic, economists try to study the topic
objectively in order to separate myth from
reality.
Copyright © 2004 South-Western
Measuring Labor-Market Discrimination
• Discrimination is often measured by looking at
the average wages of different groups.
Copyright © 2004 South-Western
Measuring Labor-Market Discrimination
• Even in a labor market free of discrimination,
different people have different wages.
Copyright © 2004 South-Western
Measuring Labor-Market Discrimination
• People differ in the amount of human capital
they have and in the kinds of work they are
willing and able to do.
Copyright © 2004 South-Western
Measuring Labor-Market Discrimination
• Simply observing differences in wages among
broad groups—white and black, men and
women—says little about the prevalence of
discrimination.
Table 2 Median Annual Earnings by Race and Sex
Copyright©2004 South-Western
Copyright © 2004 South-Western
Measuring Labor-Market Discrimination
• Because the differences in average wages
among groups in part reflect differences in
human capital and job characteristics, they do
not by themselves say anything about how
much discrimination there is in the labor
market.
Copyright © 2004 South-Western
Discrimination by Employers
• Firms that do not discriminate will have lower
labor costs when they hire the employees
discriminated against.
Copyright © 2004 South-Western
Discrimination by Employers
• Nondiscriminatory firms will tend to replace
firms that discriminate.
Copyright © 2004 South-Western
Discrimination by Employers
• Competitive markets tend to limit the impact of
discrimination on wages.
• Firms that do not discriminate will be more
profitable than those firms that do discriminate.
Copyright © 2004 South-Western
Discrimination by Customers and
Governments
• Although the profit motive is a strong force
acting to eliminate discriminatory wage
differentials, there are limits to its corrective
abilities.
• Customer preferences
• Government policies
Copyright © 2004 South-Western
Discrimination by Customers and
Governments
• Customer preferences:
• If customers have discriminatory preferences, a
competitive market is consistent with a
discriminatory wage differential.
• This will happen when customers are willing to pay
to maintain the discriminatory practice.
Copyright © 2004 South-Western
Discrimination by Customers and
Governments
• Government policies:
• When the government mandates discriminatory
practices or requires firms to discriminate, this may
also lead to discriminatory wage differentials.
Copyright © 2004 South-Western
Summary
• Workers earn different wages for many reasons.
• To some extent, wage differentials compensate
workers for job attributes.
• Workers with more human capital get paid
more than workers with less human capital.
Copyright © 2004 South-Western
Summary
• The return to accumulating human capital is
high and has increased over the past decade.
• There is much variation in earnings that cannot
be explained by things economists can measure.
Copyright © 2004 South-Western
Summary
• The unexplained variation in earnings is largely
attributable to natural ability, effort, and
chance.
• Some economists have suggested that more-
educated workers earn higher wages because
workers with high natural ability use education
as a way to signal their high ability to
employers.
Copyright © 2004 South-Western
Summary
• Wages are sometimes pushed above the
equilibrium level because of minimum-wage
laws, unions, and efficiency wages.
• Some differences in earnings are attributable to
discrimination on the basis of race, sex, or other
factors.
• When measuring the amount of discrimination,
one must correct for differences in human
capital and job characteristics.
Copyright © 2004 South-Western
Summary
• Competitive markets tend to limit the impact of
discrimination on wages.
• Discrimination can persist in competitive
markets if customers are
• willing to pay more to discriminatory firms,
• or if the government passes laws requiring firms to
discriminate.

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Earnings and Discrimination

  • 2. Copyright © 2004 South-Western Earnings and Discrimination • Differences in Earnings in the United States Today • The typical physician earns about $200,000 a year. • The typical police officer earns about $50,000 a year. • The typical farm worker earns about $20,000 a year.
  • 3. Copyright © 2004 South-Western Earnings and Discrimination • What causes earnings to vary so much? • Wages are governed by labor supply and labor demand. • Labor demand reflects the marginal productivity of labor. • In equilibrium, each worker is paid the value of his or her marginal contribution to the economy’s production of goods and services.
  • 4. Copyright © 2004 South-Western SOME DETERMINANTS OF EQUILIBRIUM WAGES • Compensating differentials • Human capital • Ability, effort, and chance • Signaling • The superstar phenomenon
  • 5. Copyright © 2004 South-Western Compensating Differentials • Compensating differential refers to a difference in wages that arises from nonmonetary characteristics of different jobs. • Coal miners are paid more than others with similar levels of education. • Night shift workers are paid more than day shift workers. • Professors are paid less than lawyers and doctors.
  • 6. Copyright © 2004 South-Western Human Capital • Human capital is the accumulation of investments in people, such as education and on-the-job training. • The most important type of human capital is education.
  • 7. Copyright © 2004 South-Western Human Capital • Education represents an expenditure of resources at one point in time to raise productivity in the future. • By the year 2000, a man with a college degree earned more than 89 percent more than without one. Women showed a 70 percent increase in earnings due to a college degree.
  • 8. Table 1 Average Annual Earnings by Educational Attainment Copyright©2004 South-Western
  • 9. Copyright © 2004 South-Western Ability, Effort, and Chance • Why has the gap in earnings between skilled and unskilled workers risen in recent years? • International trade has altered the relative demand for skilled and unskilled labor. • Changes in technology have altered the relative demand for skilled and unskilled labor.
  • 10. Copyright © 2004 South-Western Ability, Effort, and Chance • Natural ability is important for workers in all occupations. • Many personal characteristics determine how productive workers are and, therefore, play a role in determining the wages they earn.
  • 11. Copyright © 2004 South-Western An Alternative View of Education: Signaling • Firms use educational attainment as a way of sorting between high-ability and low-ability workers. • It is rational for firms to interpret a college degree as a signal of ability.
  • 12. Copyright © 2004 South-Western The Superstar Phenomenon • Superstars arise in markets that exhibit the following characteristics: • Every customer in the market wants to enjoy the good supplied by the best producer. • The good is produced with a technology that makes it possible for the best producer to supply every customer at a low cost.
  • 13. Copyright © 2004 South-Western Above-Equilibrium Wages: Minimum-Wage Laws, Unions, and Efficiency Wages • Why are some workers’ wages set above the level that brings supply and demand into equilibrium? • Minimum-wage laws • Market power of labor unions • Efficiency wages
  • 14. Copyright © 2004 South-Western Above-Equilibrium Wages: Minimum-Wage Laws, Unions, and Efficiency Wages • Unions • A union is a worker association that bargains with employers over wages and working conditions. • Strike • A strike refers to the organized withdrawal of labor from a firm by a union.
  • 15. Copyright © 2004 South-Western Above-Equilibrium Wages: Minimum-Wage Laws, Unions, and Efficiency Wages • Efficiency Wages • The theory of efficiency wages holds that a firm can find it profitable to pay high wages because doing so increases the productivity of its workers. High wages may: • reduce worker turnover. • increase worker effort. • raise the quality of workers that apply for jobs at the firm.
  • 16. Copyright © 2004 South-Western THE ECONOMICS OF DISCRIMINATION • Discrimination occurs when the marketplace offers different opportunities to similar individuals who differ only by race, ethnic group, sex, age, or other personal characteristics.
  • 17. Copyright © 2004 South-Western THE ECONOMICS OF DISCRIMINATION • Although discrimination is an emotionally charged topic, economists try to study the topic objectively in order to separate myth from reality.
  • 18. Copyright © 2004 South-Western Measuring Labor-Market Discrimination • Discrimination is often measured by looking at the average wages of different groups.
  • 19. Copyright © 2004 South-Western Measuring Labor-Market Discrimination • Even in a labor market free of discrimination, different people have different wages.
  • 20. Copyright © 2004 South-Western Measuring Labor-Market Discrimination • People differ in the amount of human capital they have and in the kinds of work they are willing and able to do.
  • 21. Copyright © 2004 South-Western Measuring Labor-Market Discrimination • Simply observing differences in wages among broad groups—white and black, men and women—says little about the prevalence of discrimination.
  • 22. Table 2 Median Annual Earnings by Race and Sex Copyright©2004 South-Western
  • 23. Copyright © 2004 South-Western Measuring Labor-Market Discrimination • Because the differences in average wages among groups in part reflect differences in human capital and job characteristics, they do not by themselves say anything about how much discrimination there is in the labor market.
  • 24. Copyright © 2004 South-Western Discrimination by Employers • Firms that do not discriminate will have lower labor costs when they hire the employees discriminated against.
  • 25. Copyright © 2004 South-Western Discrimination by Employers • Nondiscriminatory firms will tend to replace firms that discriminate.
  • 26. Copyright © 2004 South-Western Discrimination by Employers • Competitive markets tend to limit the impact of discrimination on wages. • Firms that do not discriminate will be more profitable than those firms that do discriminate.
  • 27. Copyright © 2004 South-Western Discrimination by Customers and Governments • Although the profit motive is a strong force acting to eliminate discriminatory wage differentials, there are limits to its corrective abilities. • Customer preferences • Government policies
  • 28. Copyright © 2004 South-Western Discrimination by Customers and Governments • Customer preferences: • If customers have discriminatory preferences, a competitive market is consistent with a discriminatory wage differential. • This will happen when customers are willing to pay to maintain the discriminatory practice.
  • 29. Copyright © 2004 South-Western Discrimination by Customers and Governments • Government policies: • When the government mandates discriminatory practices or requires firms to discriminate, this may also lead to discriminatory wage differentials.
  • 30. Copyright © 2004 South-Western Summary • Workers earn different wages for many reasons. • To some extent, wage differentials compensate workers for job attributes. • Workers with more human capital get paid more than workers with less human capital.
  • 31. Copyright © 2004 South-Western Summary • The return to accumulating human capital is high and has increased over the past decade. • There is much variation in earnings that cannot be explained by things economists can measure.
  • 32. Copyright © 2004 South-Western Summary • The unexplained variation in earnings is largely attributable to natural ability, effort, and chance. • Some economists have suggested that more- educated workers earn higher wages because workers with high natural ability use education as a way to signal their high ability to employers.
  • 33. Copyright © 2004 South-Western Summary • Wages are sometimes pushed above the equilibrium level because of minimum-wage laws, unions, and efficiency wages. • Some differences in earnings are attributable to discrimination on the basis of race, sex, or other factors. • When measuring the amount of discrimination, one must correct for differences in human capital and job characteristics.
  • 34. Copyright © 2004 South-Western Summary • Competitive markets tend to limit the impact of discrimination on wages. • Discrimination can persist in competitive markets if customers are • willing to pay more to discriminatory firms, • or if the government passes laws requiring firms to discriminate.