Moody's Economist Unveils 'Vicious Cycle Index' to Detect Looming Recessions

Mark Zandi's new AI-powered metric aims to provide a more nuanced view of the job market beyond the standard unemployment rate.

Apr. 11, 2026 at 12:44pm

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A geometric abstract illustration featuring overlapping triangles and circles in shades of blue, red, and yellow, conceptually representing the interconnected dynamics of the job market and economic cycles.Zandi's new 'Vicious Cycle Index' aims to provide an early warning system for potential recessions by looking beyond the standard unemployment rate.Seattle Today

Moody's chief economist Mark Zandi has developed a new economic indicator called the 'Vicious Cycle Index' that uses AI to provide a more comprehensive assessment of the job market and potential recession risks. Unlike the traditional unemployment rate, Zandi's index factors in the labor force participation rate to capture the growing number of discouraged workers who have stopped looking for jobs, a dynamic that can signal deeper economic distress.

Why it matters

Zandi's index highlights how standard economic metrics like the unemployment rate can miss important shifts in the job market, potentially masking underlying weaknesses. By incorporating labor force participation, the Vicious Cycle Index aims to offer a more sophisticated way to interpret complex labor market signals and identify early warning signs of a potential recession.

The details

Zandi developed the Vicious Cycle Index by experimenting with Moody's AI tool, Claude Code. The index tracks not just the unemployment rate, but also the labor force participation rate - the share of the population either employed or actively seeking work. When the participation rate falls faster than the unemployment rate, it suggests workers are becoming discouraged and disengaging from the job market, a dynamic that can feed back into the economy and trigger further job losses.

  • Zandi recently unveiled the Vicious Cycle Index in April 2026.
  • The U.S. unemployment rate currently sits at 4.3%, but the labor force participation rate has dipped by about half a percentage point from last year, especially among older Americans.

The players

Mark Zandi

Moody's chief economist who developed the 'Vicious Cycle Index' using AI tools to provide a more nuanced view of the job market.

Claudia Sahm

Economist behind the 'Sahm rule', which flags recessions when the unemployment rate rises by 0.5 percentage points over 12 months. Sahm acknowledges Zandi's index as a logical step to address weaknesses in her own indicator.

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What they’re saying

“We must not let individuals continue to damage private property in San Francisco.”

— Robert Jenkins, San Francisco resident

“Fifty years is such an accomplishment in San Francisco, especially with the way the city has changed over the years.”

— Gordon Edgar, grocery employee

What’s next

Zandi himself cautions that the Vicious Cycle Index is still in its experimental stages, and Moody's own recession model currently places the odds of a downturn at 45%. However, the index highlights how economists are constantly seeking to refine their tools to better understand the evolving dynamics of the job market and the broader economy.

The takeaway

Zandi's 'Vicious Cycle Index' is a creative response to the puzzle of a labor market that has been acting unusually for years, underscoring how economic forecasting requires ongoing adaptation and innovation. As traditional recession indicators become less reliable, this new AI-powered metric offers a more sophisticated way to interpret complex labor market signals and identify potential warning signs of economic distress.