Government Actions in Markets: Price Ceilings, Price Floors, and Production Quotas

Chapter 6: Government Actions in Markets

Overview

This chapter examines how government interventions such as price ceilings, price floors, and production quotas affect competitive markets. The focus is on the efficiency and fairness of these policies, their impact on resource allocation, and real-world examples from housing and labor markets.

Government Intervention in Markets

Price Ceilings

A price ceiling is a legally established maximum price that sellers can charge for a good or service. Commonly, price ceilings are used in housing markets as rent control to make housing more affordable for low-income individuals.

• Definition: A price ceiling sets an upper limit on the price of a good or service.

• Example: Rent control policies in cities to cap apartment rents.

• Key Question: Are there costs to imposing price ceilings?

Case Study: San Francisco Housing Market

Comparing the effects of no price controls (1906 post-earthquake) versus rent ceilings (1946):

• Short Run (No Price Controls): Prices increased due to reduced supply, but there was an incentive for suppliers to build more housing, which eventually increased supply and reduced prices in the long run.

• With Rent Ceiling: The rent ceiling led to a persistent housing shortage, as suppliers had no incentive to build more housing. The market underproduced housing, resulting in a deadweight loss.

Diagram: Rent Ceiling Effects

The following table summarizes the effects of a rent ceiling on the housing market:

Scenario	Price	Quantity	Shortage?	Incentive to Build?
No Price Control (Short Run)	High	Low	No	Yes
No Price Control (Long Run)	Decreases	Increases	No	Yes
With Rent Ceiling	Low (Capped)	Low	Yes	No

Economic Effects of Rent Ceilings

• Deadweight Loss: The market produces less than the efficient quantity, resulting in lost consumer and producer surplus.

• Search Activity: Time spent searching for housing increases, raising the opportunity cost of housing.

• Illegal Market Activity: Renters and landlords may engage in illegal arrangements at higher effective rents.

Formula for Deadweight Loss:

$\text{Deadweight Loss} = \frac{1}{2} \times (Q^* - Q_c) \times (P^* - P_c)$ Where $Q^*$ and $P^*$ are equilibrium quantity and price, $Q_c$ and $P_c$ are quantity and price under the ceiling.

Fairness of Rent Ceilings

• Fair Rules View: Rent ceilings are unfair because they block voluntary exchange.

• Fair Results View: Rent ceilings are probably unfair because they do not generally benefit the poor and decrease the quantity of housing available.

• Allocation Methods: Scarce housing may be allocated by lottery, first-come-first-served, or other arbitrary means.

Empirical Evidence: Rent Control in San Francisco

• Rent control reduced renters' mobility and made it harder for new renters to find housing.

• Rental housing supply decreased by 15%, and the number of renters in protected units fell by 25%.

• Long-run effects included upward pressure on rents citywide, increased gentrification, and negative externalities on neighborhoods.

• Rent control increased income inequality by limiting displacement of poorer people but attracting higher-income residents.

Price Floors

Minimum Wage

A price floor is a government-imposed minimum price that can be charged for a good or service. In labor markets, this is known as the minimum wage.

• Definition: A price floor sets a lower limit on the price of a good or service.

• Example: Minimum wage laws.

• Effect: If set above equilibrium, creates surplus labor (unemployment) and deadweight loss.

Diagram: Minimum Wage Effects

Scenario	Wage	Quantity of Labor	Unemployment?	Incentive to Increase Skills?
No Minimum Wage	Equilibrium	Equilibrium	No	Yes
With Minimum Wage	Above Equilibrium	Lower Employment	Yes	Yes

Formula for Deadweight Loss from Minimum Wage:

$\text{Deadweight Loss} = \frac{1}{2} \times (Q^* - Q_f) \times (W_f - W^*)$ Where $Q^*$ and $W^*$ are equilibrium quantity and wage, $Q_f$ and $W_f$ are quantity and wage under the floor.

Empirical Evidence: Seattle Minimum Wage

• Minimum wage increase from $9.47 to $13 reduced hours worked in low-wage jobs by 6-7%.

• Hourly wages increased by about 3%.

• Total payroll for low-wage workers fell, with average earnings dropping by $74 per month.

• Estimated price elasticity of demand for low-skilled workers: $-2.6$.

Fairness of Minimum Wages

• Result Fairness: Unemployed workers are worse off; policy may not help the intended group.

• Rules Fairness: Blocks voluntary exchange between firms and workers.

• Most economists believe minimum wage laws above equilibrium increase unemployment among low-skilled, younger workers.

Production Quotas and Subsidies

Production Quotas

A production quota is an upper limit on the quantity of a good that may be produced in a specific period. Quotas only affect the market if set below the equilibrium output.

• Effects: Decrease in quantity supplied, increase in price, decrease in marginal cost, inefficiency from underproduction, and incentive to cheat and overproduce.

• Impact on Revenue: If demand is inelastic, aggregate farmer revenue may increase; if demand is elastic, revenue may decrease.

Table: Effects of Production Quotas

Demand Elasticity	Quota Effect on Price	Quota Effect on Quantity	Quota Effect on Total Revenue
Inelastic	Increase	Decrease	Increase
Elastic	Increase	Decrease	Decrease

Formula for Deadweight Loss from Quotas:

$\text{Deadweight Loss} = \frac{1}{2} \times (Q^* - Q_q) \times (P_q - P^*)$ Where $Q^*$ and $P^*$ are equilibrium quantity and price, $Q_q$ and $P_q$ are quantity and price under the quota.

• Incentive to Cheat: Producers may try to exceed quotas to increase profits.

• Marginal Cost: Quotas can result in marginal cost being less than price, indicating inefficiency.

Key Terms

• Price Ceiling: Maximum legal price for a good/service.

• Price Floor: Minimum legal price for a good/service.

• Deadweight Loss: Loss of total surplus due to market inefficiency.

• Search Activity: Time and effort spent finding a transaction partner.

• Production Quota: Maximum allowable production in a market.

• Elasticity: Responsiveness of quantity demanded/supplied to price changes.

Summary Table: Government Interventions

Policy	Intended Effect	Actual Market Effect	Efficiency	Fairness
Price Ceiling	Lower prices for consumers	Shortage, search activity, illegal markets	Inefficient (deadweight loss)	Debated (may not help poor)
Price Floor	Higher income for suppliers/workers	Surplus, unemployment, deadweight loss	Inefficient (deadweight loss)	Debated (may hurt intended group)
Production Quota	Limit supply, raise prices	Underproduction, higher prices, incentive to cheat	Inefficient (deadweight loss)	Debated (may benefit some producers)

Additional info: Academic context and formulas have been expanded for clarity and completeness. Real-world studies and diagrams have been summarized in tables for exam preparation.