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Understanding the SAHM Rule: Is the US Barreling Towards a Looming Recession in 2024?

SAHM Rule 25 Year History chart illustrating unemployment rate spikes and shaded recession periods from 1999 to 2024.
SAHM Rule 25-Year History: This chart illustrates the SAHM Rule’s effectiveness as an early recession indicator over the past 25 years. The shaded areas represent periods of economic downturn, highlighting the unemployment rate spikes that align with these recessions.

Introduction

In the world of economic indicators, the SAHM Rule stands out as a reliable early warning system for economic recessions. Developed by economist Claudia Sahm, this rule uses changes in the unemployment rate to predict economic downturns. With recent data indicating a potential recession, understanding the SAHM Rule is more crucial than ever. In this post, we will look into what the SAHM Rule is, how it works, and why it suggests that the US might be on the brink of a recession.

What is the SAHM Rule?

The SAHM Rule is a straightforward method to detect the onset of a recession. According to this rule, a recession is signaled when the three-month average unemployment rate rises by 0.5% or more above its low during the previous 12 months. This rule provides timely signals, allowing policymakers and economists to respond swiftly to economic downturns.

How Does the SAHM Rule Work?

  1. Data Collection: The SAHM Rule uses monthly unemployment rate data from the Bureau of Labor Statistics (BLS).
  2. Calculation: Calculate the three-month moving average of the unemployment rate.
  3. Comparison: Identify the lowest unemployment rate in the past 12 months and compare it to the three-month average.
  4. Threshold: If the three-month average exceeds the lowest rate by 0.5%, a recession is indicated.

To illustrate, let’s break down the steps:

Step 1: Calculate the Three-Month Average Unemployment Rate:

  • Take the unemployment rates for the last three months.
  • Calculate the average of these three values

Current 3-Month Unemployment Rate = 4.13%

Step 2: Identify the Lowest Unemployment Rate in the Past 12 Months:

  • Review the monthly unemployment rates for the past year.
  • Identify the lowest rate among these values.

Current LTM Minimum Unemployment Rate = 3.7%

Step 3: Calculate the Difference:

4.13% – 3.7% = 0.43%

Step 4: Compare the Difference to the Threshold:

  • If the difference is 0.5% or more, the SAHM Rule signals a recession.

0.43% < 0.5%

Unemployment rate data chart showing monthly unemployment rates, three-month moving averages, and SAHM Rule calculations from March 2021 to July 2024.
Unemployment Rate Data Chart: This chart illustrates monthly unemployment rates, three-month moving averages, and SAHM Rule calculations from March 2021 to July 2024. It highlights the trend of rising unemployment rates and their implications for potential recessions according to the SAHM Rule.

Why is the SAHM Rule Important?

Timely Indication: Traditional methods of identifying recessions, such as GDP data, are often lagging indicators. The SAHM Rule offers a more immediate signal.

Policy Response: Early detection allows for quicker implementation of fiscal and monetary policies to mitigate economic downturns.

Historical Accuracy: The SAHM Rule has a strong track record of predicting past recessions, enhancing its credibility among economists.

Current Economic Indicators: Is the US in a Recession?

Recent data shows that the three-month average unemployment rate has risen significantly, triggering the SAHM Rule. Here’s a detailed analysis of the current situation:

  1. Rising Unemployment: The unemployment rate has been on an upward trend over the past few months. The three-month moving average has hit the critical threshold of 0.5% above its recent low.
  2. Economic Indicators: Additional indicators, such as declining industrial production, slowing consumer spending, and decreased business investments, further support the recession signal.
  3. Global Factors: External factors like supply chain disruptions and geopolitical tensions are exacerbating the economic strain, contributing to the potential downturn.

Visual Evidence: The SAHM Rule in Action

SAHM Rule graph showing the three-month average unemployment rate and its deviation from the lowest rate in the past 12 months.
SAHM Rule Chart: The three-month average unemployment rate shows a notable increase, nearing the critical 0.50% threshold, suggesting a potential recession. This chart highlights the importance of the SAHM Rule as an early indicator for economic downturns.


The graph above clearly illustrates how the three-month average unemployment rate has hit the 0.5% junction but has retraced slightly, currently standing at 0.43%. While it hasn’t yet crossed the critical 0.50% mark, the trend suggests that the economy is edging closer to a recession.

Other Recession Forecasting Models to Consider

While the SAHM Rule is a robust tool for predicting recessions, it is beneficial to use it in conjunction with other forecasting models to gain a comprehensive view of the economic landscape.

The Yield Curve, for instance, is another powerful recession predictor. When the yield on long-term Treasury bonds falls below that of short-term bonds, it often signals an impending recession.

Current Yield Curve chart showing interest rates for U.S. Treasury bonds from 1 month to 30 years, highlighting an inversion indicative of economic slowdown.
Current Yield Curve: This chart displays the interest rates across various maturities of US Treasury bonds, indicating an inversion that often signals potential economic slowdowns and recession risks.

The Leading Economic Index (LEI) compiled by The Conference Board, which aggregates multiple economic indicators, is also widely used to forecast economic activity.

Chart comparing year-over-year percentage changes in the Leading Economic Index (LEI) and Real GDP, with shaded areas indicating recession periods.
Comparison of Year-over-Year Changes in Leading Economic Index (LEI) and Real GDP: This chart shows the correlation between LEI and Real GDP changes, with shaded areas representing recessions as determined by the NBER Business Cycle Dating Committee.

Lastly, the Aruoba-Diebold-Scotti Business Conditions Index (ADS), which incorporates data from various economic sectors, provides near real-time analysis of business conditions.

ADS Business Conditions Index chart showing economic fluctuations from 2021 to July 2024, indicating real-time business conditions.
ADS Business Conditions Index: The chart displays economic fluctuations from 2021 to July 2024, with the index measuring real-time business conditions and highlighting significant economic trends.

By combining these models with the SAHM Rule, economists and policymakers can enhance their understanding and readiness for potential economic downturns.

Why the US May Be Considered Near a Recession

  • Unemployment Spike: The significant rise in unemployment aligns with the SAHM Rule’s recession criteria.
  • Economic Slowdown: Key sectors, including manufacturing, services, and retail, are experiencing downturns, reflecting a broader economic contraction.
  • Consumer and Business Sentiment: Surveys indicate declining confidence among consumers and businesses, leading to reduced spending and investment.

Conclusion

The SAHM Rule has proven to be a vital tool in identifying economic downturns. The recent increase in unemployment, combined with other economic indicators, suggests that the US is nearing a recession. By understanding and monitoring these signals, we can take proactive measures to mitigate the impact and steer the economy towards recovery. Staying informed and prepared is essential for navigating these challenging times.

By incorporating the SAHM Rule into our economic analysis, we can better anticipate and respond to economic challenges, ensuring a more resilient economy for the future.

Stay Informed, Stay Invested, and let’s grow together.

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