Government Actions in Markets

Introduction

This chapter examines how government interventions such as price ceilings, price floors, taxes, subsidies, and prohibitions affect market outcomes. These policies can lead to unintended consequences, including shortages, surpluses, inefficiency, and the emergence of illegal markets.

Price Controls

Price Ceilings

A price ceiling (or price cap) is a regulation that makes it illegal to charge a price higher than a specified level. When applied to the housing market, it is called a rent ceiling.

• Binding Price Ceiling: Set below the equilibrium price, causing market effects.

• Non-binding Price Ceiling: Set above equilibrium price, has no effect.

Effects of a Rent Ceiling:

• Creates a housing shortage (quantity demanded exceeds quantity supplied).

• Leads to increased search activity as people spend more time looking for housing.

• Encourages the development of a black market where illegal rents are charged.

• Can result in discrimination, favoritism, or allocation by lottery or first-come, first-served.

• Often associated with slum conditions due to reduced landlord incentives to maintain properties.

Example: If the equilibrium rent is $1,400/month and a rent ceiling is set at $1,200/month, a shortage arises because more people want to rent at the lower price, but fewer landlords are willing to supply housing.

Inefficiency of Rent Ceilings

• Leads to underproduction of housing services.

• Marginal social benefit exceeds marginal social cost, creating a deadweight loss.

• Both consumer surplus and producer surplus shrink.

• Opportunity cost of housing increases due to search activity.

Fairness of Rent Ceilings

• Fair-rules view: Unfair because it blocks voluntary exchange.

• Fair-results view: Unfair because it does not necessarily benefit the poor.

• Allocation methods (lottery, first-come, discrimination) do not ensure fairness.

Price Floors

A price floor is a regulation that makes it illegal to trade at a price lower than a specified level. The most common example is the minimum wage in labor markets.

• Binding Price Floor: Set above equilibrium price, causing market effects.

• Non-binding Price Floor: Set below equilibrium price, has no effect.

Minimum Wage

Effects of Minimum Wage

• Creates a surplus of labor (unemployment) as quantity of labor supplied exceeds quantity demanded.

• Workers spend more time searching for jobs.

• May disproportionately affect low-income teenagers and minority groups.

• Employers may exercise personal preferences in hiring.

Example: If the equilibrium wage is $14/hour and the minimum wage is set at $15/hour, fewer workers are hired, and unemployment increases.

Inefficiency of Minimum Wage

• Quantity of labor employed is less than the efficient quantity.

• Marginal social cost (leisure forgone) exceeds marginal social benefit (value of goods produced).

• Creates a deadweight loss and reduces both worker and firm surplus.

Fairness of Minimum Wage

• Unfair by both fair-rules and fair-results views: only those who keep jobs benefit, and voluntary exchange is blocked.

Taxes and Subsidies

Tax Incidence

Tax incidence refers to the division of the burden of a tax between buyers and sellers. The legal assignment of the tax (who is required to pay it to the government) does not determine who actually bears the economic burden.

• If the price rises by the full amount of the tax, buyers bear the burden.

• If the price rises by less than the tax, buyers and sellers share the burden.

• If the price does not rise, sellers bear the burden.

Equivalence of Tax on Buyers and Sellers

• Imposing a tax on either buyers or sellers has the same effect on market outcomes (price, quantity, and tax burden).

Example:

• Equilibrium price of cigarettes is $6/pack. A $3 tax on sellers raises the price to $8 for buyers, reduces quantity, and sellers receive $5/pack. Buyers pay $2 of the tax, sellers pay $1.

Taxes and Efficiency

• Taxes create inefficiency except in cases of perfectly inelastic demand or supply.

• Decrease quantity traded, create deadweight loss, and reduce total surplus.

Elasticity and Tax Incidence

• The division of the tax burden depends on the relative elasticities of demand and supply.

General Rule: The more inelastic side of the market bears a greater share of the tax burden.

Taxes in Practice

• Taxes are often levied on goods with inelastic demand (e.g., alcohol, tobacco, gasoline) so buyers pay most of the tax.

• Labor supply is relatively inelastic, so workers bear most of the payroll tax burden.

Principles of Tax Fairness

• Benefits Principle: People should pay taxes equal to the benefits they receive from government services.

• Ability-to-Pay Principle: People should pay taxes according to their ability to bear the burden (e.g., higher income, higher tax rate).

Production Quotas and Subsidies

Production Quotas

A production quota is an upper limit on the quantity of a good that may be produced during a specified period. Quotas decrease quantity, raise prices, and create inefficiency and incentives to cheat.

Subsidies

A subsidy is a payment made by the government to producers. Subsidies increase quantity produced, lower market prices, and can lead to inefficient overproduction.

Markets for Illegal Goods

How Illegal Markets Work

• Prohibiting goods (e.g., drugs) does not eliminate markets; it shifts them underground.

• Penalties on sellers decrease supply, raising prices and lowering quantity.

• Penalties on buyers decrease demand, lowering prices and quantity.

• Penalties on both sides decrease both supply and demand, reducing quantity further.

• Legalizing and taxing can achieve similar reductions in consumption as prohibition, but with different social costs and benefits.

Costs and Benefits of Prohibition

• Benefits: Reduces undesirable behavior.

• Costs: Enforcement expenses, disrespect for law, disproportionate enforcement, incarceration.

Special Topic: Marriage Market in China and the One-Child Policy

Unintended Outcomes of the One-Child Policy

• Imbalanced sex ratios (more males than females).

• Fewer siblings and grandchildren.

• "Spoiled" only children and fewer caretakers for aging parents.

• Distorted marriage market: women marry older, wealthier men; poorer men face difficulty finding spouses.

Market Analogy: The marriage market can be analyzed using supply and demand concepts, where the "price" is determined by the relative scarcity of men and women.

Key Formulas and Concepts

• Deadweight Loss (DWL): The loss in total surplus due to market inefficiency (e.g., from taxes, price controls).

• Tax Incidence: The division of a tax burden between buyers and sellers depends on elasticity:

• Elasticity: is price elasticity of demand, is price elasticity of supply.

Review Questions (Selected)

• Minimum wage means you cannot pay a wage below the floor.

• Rent control is a price ceiling benefiting renters.

• Rent controls can lead to shortages, increased search time, and black markets.

• Legal incidence of a tax does not affect the economic incidence; elasticity determines the burden.

Summary Table: Effects of Government Interventions

Additional info: Some diagrams and tables referenced in the original material were not included; key concepts and relationships have been described in text and tabular form for clarity.