Unemployment and Inflation

Introduction

This study guide covers the essential macroeconomic concepts of unemployment and inflation, focusing on their measurement, types, causes, and implications for the economy. Understanding these topics is crucial for analyzing economic performance and policy.

Unemployment

Unemployment and the Business Cycle

Unemployment is closely linked to the business cycle, rising during recessions and typically falling during periods of economic expansion.

• Business Cycle: The natural rise and fall of economic growth that occurs over time.

• Recession: A period of declining economic activity, often marked by rising unemployment.

• Expansion: A period of increasing economic activity and typically falling unemployment.

• Example: The U.S. unemployment rate spiked during the 2008 financial crisis and the COVID-19 pandemic, both recessionary periods.

Calculating Unemployment: The Household Survey

The U.S. Census Bureau conducts the Current Population Survey (CPS) monthly to measure employment and unemployment.

• Surveys about 60,000 representative households.

• Includes household members aged 16 and older.

• Asks about employment status during a specific "reference week" and recent job-search activities.

Classifying Labor Force Status: Hypothetical Phone Call

Labor force status is determined by a series of questions about age, recent work, and job search activity.

• Employed: Worked for pay in the previous week.

• Unemployed: Did not work for pay but actively looked for work in the past 4 weeks.

• Out of the Labor Force (OOLF): Not working and not actively seeking work.

• Marginally Attached Worker: Looked for work in the past 12 months but not in the past 4 weeks.

• Discouraged Worker: A marginally attached worker who stopped looking for work due to belief that no jobs are available.

• Underemployed: Working part-time but would prefer full-time work.

Key Definitions

• Employed: Number of people currently working for pay, full-time or part-time.

• Unemployed: Number of people actively seeking work but not currently employed.

• Labor Force: The sum of employed and unemployed individuals.

• Out of the Labor Force (OOLF): People aged 16+ not working and not seeking work.

Unemployment Rate, Labor Force Participation Rate, and Employment Rate

• Unemployment Rate (U/E rate): The percentage of the labor force that is unemployed.

• Labor Force Participation Rate (LFPR): The percentage of the working-age population (16+) that is in the labor force.

• Employment Rate: The percentage of the working-age population that is employed.

Formulas:

• Unemployment Rate:

• Labor Force Participation Rate:

Shortcomings of the Unemployment Rate

The official unemployment rate may understate or overstate true unemployment due to:

• Exclusion of discouraged and marginally attached workers.

• Does not distinguish between full-time and part-time work (underemployment).

• Potential misreporting by survey respondents.

Alternative Measures of Unemployment

Broader measures, such as U-6, include:

• Unemployed individuals

• Marginally attached workers

• Underemployed (part-time for economic reasons)

U-6 Rate:

Types of Unemployment

• Frictional Unemployment: Short-term unemployment from the process of matching workers with jobs.

• Structural Unemployment: Long-term unemployment from a mismatch between workers' skills and job requirements.

• Cyclical Unemployment: Unemployment caused by downturns in the business cycle (recessions).

The Natural Rate of Unemployment

The natural rate of unemployment is the sum of frictional and structural unemployment, typically around 4-5% in the U.S.

• When unemployment equals the natural rate, the economy is at "full employment." This does not mean zero unemployment.

• Formula:

Explaining and Influencing Unemployment

• Government Policies: Training programs, unemployment insurance, minimum wage laws, and labor unions can affect unemployment rates.

• Unemployment Insurance: Provides income to laid-off workers, potentially increasing the duration of unemployment.

• Minimum Wage Laws: Set a wage floor; may increase unemployment if set above equilibrium, but effects are generally small at current levels.

• Labor Unions: Bargain for higher wages; limited impact in the U.S. due to low unionization rates.

• Efficiency Wages: Firms may pay above-market wages to boost productivity, which can contribute to unemployment even at full employment.

Inflation

What is Inflation?

Inflation is the general increase in prices across the economy, reducing the purchasing power of money.

• Aggregate Price Level (P): A single number representing the overall level of prices.

• Example: In the 1960s, a dollar could buy much more than today due to inflation over time.

Measuring Prices: Price Indexes

• Price Index: Measures the cost of a fixed market basket of goods and services relative to a base year.

• Consumer Price Index (CPI): Measures the cost of a typical basket of goods and services for urban consumers.

• Producer Price Index (PPI): Measures the average change in selling prices received by domestic producers.

Formula for Price Index:

Calculating the CPI

1. Define a market basket of goods and services.

2. Calculate the cost to buy the basket in the base year.

3. Calculate the cost to buy the basket in the current year.

4. Compute the CPI using the formula above.

Inflation Rate

• The inflation rate is the annual percentage change in a price index, usually the CPI.

• Formula:

Complications with the CPI

• Substitution Bias: Consumers may substitute cheaper goods when prices change, but the CPI uses a fixed basket.

• Quality Bias: Improvements in product quality are not fully reflected in the CPI.

• Solution: The Chained CPI attempts to correct for these biases.

Nominal vs. Real Variables

• Nominal Variables: Measured in current dollars (e.g., nominal income).

• Real Variables: Adjusted for inflation, allowing for comparison across time.

• Formula for Real Value:

Nominal vs. Real Interest Rates

• Nominal Interest Rate (i): The stated rate on a loan or investment.

• Real Interest Rate (r): Adjusted for inflation; reflects the true cost of borrowing and lending.

• Formula: (where is the inflation rate)

Costs of Inflation

• Anticipated Inflation: Can cause redistribution of income, menu costs (costs of changing prices), and higher taxes on nominal returns.

• Unanticipated Inflation: Creates uncertainty, making borrowing and lending riskier, and can lead to arbitrary redistributions between borrowers and lenders.

Summary Table: Types of Unemployment

Summary Table: Key Labor Market Rates