Discuss the tradeoffs between work and leisure based on substitution and income effects.
Explain why an individualâs labor supply curve is backward-bending.
Describe the factors that can change labor supply and demand.
Determine the competitive market equilibrium for labor.
Identify ways in which economic discrimination can occur in the labor market.
Describe the concept of segmented labor markets and their effect on wage levels.
Identify federal laws and policies aimed at combating discrimination.
Describe the history, costs, and benefits of trade unions.
Discuss how the labor market has adapted to changing economic conditions.
Competitive Labor Markets
Similar to competitive product markets with key assumptions:
Firms operate in competitive industries with many buyers and sellers, a homogeneous product, and easy entry and exit.
All workers are regarded as equally productive.
Information in the industry is widely available and accurate.
The Supply of Labor
Definition: The number of hours an individual is willing to work at various wage rates.
Reservation Wage: The lowest wage at which an individual is willing to work.
Individual Labor Supply
Substitution Effect:
Workers choose more hours as wages increase because the opportunity cost of leisure increases.
Income Effect:
Workers choose fewer hours as wages increase and more hours when wages decrease.
Backward-Bending Individual Labor Supply:
At higher wage levels, the income effect may dominate the substitution effect, leading individuals to work fewer hours.
Market Labor Supply
Unlike individual labor supply curves, the market labor supply curve is positively sloped.
Higher wages attract more workers (e.g., point a to point b).
Market labor supply can shift (e.g., point a to point c) in response to various factors.
Shifts in Labor Supply
The following factors can shift the labor supply curve:
Demographic changes
Nonwage aspects of jobs
Wages in alternative jobs
Nonwage income
The Firmâs Demand for Labor
Derived from the demand for its product and the productivity of labor.
Marginal Revenue Product (MRPL)
The amount of additional revenue one worker earns for the firm.
MRPL = MPPL \times MR
MPPL (Marginal Physical Product of Labor):
The additional output from adding one more worker.
Value of the Marginal Revenue Product (VMPL)
In competitive labor markets, the firm is a price taker, which means MR = P. Therefore:
MRPL = MPPL \times P = VMPL
For competitive firms, profit is maximized when labor is hired to the point where VMPL = \text{Wage Rate}.
Firms hire workers based on their value relative to their cost:
MRPL = W
Shifts in Labor Demand
The following factors can shift the labor demand curve:
Changes in product demand
Changes in productivity
Changes in the prices of other inputs
Market Demand for Labor
Aggregation of individual firms' labor demand.
Elasticity of Demand for Labor
Measures the responsiveness of the quantity of labor demanded to changes in wages.
Factors include:
Elasticity of demand for the product.
Ease of input substitutability.
Laborâs share of total production costs.
Economic Discrimination
Workers of equal ability and productivity are paid different wages or are otherwise discriminated against.
Result: Members of different groups are segregated into different occupations.
Beckerâs Theory of Discrimination
Argument: Discriminatory firms must pay higher wages for âpreferredâ workers, resulting in higher costs and lower profit.
Non-discriminating firms can hire from a larger supply of workers at lower wages, resulting in lower costs and greater profit.
Conclusion: Pressures of market competition should drive discrimination to zero in the long run.
Limitations to Beckerâs Theory
Adjustment costs of firing unproductive workers and hiring new workers can be high.
Some workers (such as single parents) may be less willing to accommodate employerâs demands (such as travel).
Some workers choose more flexible career paths that do not penalize extended absences from the labor market.
Segmented Labor Markets
Occur when labor markets split into separate parts, leading to wage differentials.
Theories include:
Dual Labor Market Hypothesis: Labor market is split into primary and secondary sectors.
Job Crowding Hypothesis: Occupations are separated into predominantly male and female jobs.
Insider-Outsider Theory: Workers are segregated into union and nonunion sectors.
Job Crowding/Dual Labor Market
Discrimination in male-dominated jobs shifts the supply left, pushing wages higher, while wages in female-dominated jobs decrease.
Public Policy to Combat Discrimination
Equal Pay Act of 1963: Requires that women and men receive equal pay for equal work.
Civil Rights Act of 1964: Prohibits discrimination based on race, color, sex, religion, or nationality.
Executive Order 11246: Established affirmative action.
Age Discrimination in Employment Act of 1967: Protects workers over age 40 from age discrimination.
Americans with Disabilities Act (1990): Prohibits discrimination based on physical or mental disabilities.
Equality Act (Proposed): Would prohibit discrimination based on sexual orientation or gender identity.
Unions
Associations of employees that bargain with employers over the terms and conditions of work.
Types of Unions
Craft Union: Represents members of a specific craft or occupation (e.g., air traffic controllersâNATCA).
Industrial Union: Represents all workers employed in a specific industry (e.g., auto workersâUAW).
Benefits vs. Costs of Union Membership
Benefits include:
Higher wages and job benefits through collective bargaining.
Greater job security against arbitrary or vindictive decisions by management.
Costs include:
Membership dues.
Costs of strikes (lost wages).
Loss of some individual flexibility.
Types of Union Structures
Closed Shop: Only union members are hired.
Union Shop: Nonunion workers can be hired but must join the union within a specified time.
Agency Shop: Nonunion workers may be hired but must pay dues for the unionâs services.
Brief History of American Unions
Wagner Act (1935):
Prohibited a variety of unfair labor practices, including firing workers for engaging in union activities.
Required employers to âbargain in good faith.â
Taft-Hartley Act (1947):
Prohibits unfair labor practices by unions.
Helped balance the Wagner Act by outlawing closed shops and permitting states to pass right-to-work laws.
Unions and Wages
Union membership as a percent of U.S. workers fell steadily since the 1970s, but has stabilized since 2018.
The average union wage is 10% to 20% higher than the average nonunion wage within the same industry.
Unions reduce labor supply to push wages higher; this causes an increase in supply in the nonunion sector, reducing wages.
Jobs of the Future
Focus more on services, such as health care, transportation, and information technology.
Increased technology and the growth of high-skilled jobs have led to greater importance of education.
Key Concepts
Supply of labor
Reservation wage
Substitution effect
Income effect
Demand for labor
Marginal physical product of labor
Marginal revenue product
Value of the marginal product
Elasticity of demand for labor
Economic discrimination
Segmented labor markets
Closed shop
Union shop
Agency shop
Right-to-work laws
Chapter 12: Land, Capital Markets, and Innovation
Chapter Objectives
Explain the impact that the supply of land has on product markets.
Determine the present value of an investment.
Compute the rate of return of an investment.
Describe how businesses acquire financial capital.
Describe the relationship between education and earnings.
Demonstrate how market equilibrium levels for human capital are determined.
Describe the impact of economic profit on entrepreneurs and markets.
Explain the role of innovation in improving the standard of living.
Factors of Production
Land
Labor
Capital
Entrepreneurial Ability
Land
The supply of land is perfectly inelastic; therefore, the payment for its use (rent) is determined entirely by demand.
With the supply of land fixed, rent is determined entirely by demand. When demand increases, rent increases, and vice versa.
The supply of land is fixed, but can be improved or artificially expanded (e.g., Hong Kong Disneyland built on land reclaimed from the ocean).
Industrial Agglomeration
Occurs when firms in one industry choose to locate in close proximity to each other.
This increases the demand for land.
Physical Capital
Includes all manufactured products that are used in the production of goods and services.
A firm invests by purchasing physical capital, which entails comparing marginal benefit and marginal cost.
Marginal Revenue Product of Capital (MRPK)
MRPK is the amount of additional revenue earned when a firm uses one more unit of capital.
Firms continue to invest until the cost of capital is equal to MRPK.
The cost-of-capital measure can be simplified by using the interest rate (i), which is determined by the loanable funds market.
Loanable Funds Market
Determines the interest rate (i), which is used by firms in their investment decisions.
Present Value Approach
Used to evaluate investments with different returns and different costs.
It involves discounting, which takes into account that money received today is worth more than money received in the future.
Present Value (PV)
Present value is the value of an investment (future stream of income) today.
The higher the interest rate, the lower the present value.
PV = \frac{X}{(1 + i)^n}
Where:
X = future payment
i = interest (discount) rate
n = years before payment is made
Rate of Return Approach
Rate of return uses the present value formula but subtracts costs. Then solve the equation for the discount rate (i) at which an investment would just break even.
The more profitable an investment, the higher the rate of return.
Comparing Two Approaches
Present Value Approach: Calculates the present value of future income from an investment.
Rate of Return Approach: Calculates the interest rate needed for an investment to break even.
Financial Capital
Debt versus equity capital
Bond: A debt instrument that promises to pay back a certain amount over time.
Stocks: Shares of ownership in a company that provide voting rights and profit sharing.
Other Sources of Financial Capital
Venture Capital: Investment in startup companies with potentially profitable ideas.
Private Equity: Investment in struggling firms to make them more profitable.
Investment in Human Capital
Human capital investments, such as education and training, lead to more job opportunities and greater potential earnings.
Benefits and costs of college.
College students incur direct costs and forgo earnings while in school but earn significantly more money over their lifetime.
Most studies find that college graduates earn significantly more than high school graduates over their working life.
Equilibrium Levels of Human Capital
The demand for investment in human capital slopes down because:
There are diminishing returns to more education.
More time in school leaves less time to earn money.
The supply of investable funds is positively sloped because students use the lowest-cost funds first.
Implications of Human Capital Theory
Younger people have longer earning horizons and are more likely to invest in human capital.
The greater the market earnings differential between high school and college graduates, the more people will attend college.
The more one discounts the future (values the present more than the future), the less one will invest in human capital.
Education serves as an important signal to potential employers that a worker is intelligent and trainable.
On-the-job training is typically offered to increase the productivity of a firmâs workers. It can consist of supervisory training or formal coursework.
Entrepreneurship and Innovation
The ability to take inputs and convert them into valuable products and services.
Profit: The payment entrepreneurs receive for producing goods and services and assuming the risks of doing so.
Intellectual Property Rights
A set of exclusive rights granted to an inventor or a producer of creative work, allowing the originator to earn profit over a fixed period.
These rights provide an important incentive to innovate.
Types of Intellectual Property Rights
Patent: Protects inventions.
Copyright: Protects writings, music, and other creative works.
Trademark: Protects company names and logos.
Industrial Design: Protects design of products (such as a car).