Abstract
This paper develops a new rule to detect US recessions by combining data on job vacancies and unemployment. We first construct a new recession indicator: the minimum of the Sahm-rule indicator (the increase in the 3-month average of the unemployment rate above its 12-month low) and a vacancy analogue. The minimum indicator captures simultaneous rises in unemployment and declines in vacancies. We then set the recession threshold to 0.29 percentage points (pp), so a recession is detected whenever the minimum indicator crosses 0.29pp. This new rule detects recessions faster than the Sahm rule: with an average delay of 1.2 months instead of 2.7 months, and a maximum delay of 3 months instead of 7 months. It is also more robust: it identifies all 15 recessions since 1929 without false positives, whereas the Sahm rule breaks down before 1960. By adding a second threshold, we can also compute recession probabilities: values between 0.29pp and 0.81pp signal a probable recession; values above 0.81pp signal a certain recession. In December 2024, the minimum indicator is at 0.43pp, implying a recession probability of 27%. This recession risk was first detected in March 2024.
Figure 2: Construction of the Michez rule: unemployment and vacancy indicators, January 1960–December 2024
Figure 3: Michez rule in the United States, January 1960–December 2024
Figure 6: Michez rule in the United States, April 1929–December 1959
Figure 7: Dual-threshold Michez rule in the United States, January 1960–December 2024
Citation
Michaillat, Pascal, and Emmanuel Saez. 2025. “Has the Recession Started?” Oxford Bulletin of Economics and Statistics. https://doi.org/10.1111/obes.12685.
@article{MS25,
author = {Pascal Michaillat and Emmanuel Saez},
year = {2025},
title = {Has the Recession Started?},
journal = {Oxford Bulletin of Economics and Statistics},
url = {https://doi.org/10.1111/obes.12685}}