US Labor Share of Income Hits Post-War Low

The US Labor Share of Income Has Reached a Post-War Low

The labor share of income in the United States—the fraction of economic output paid to workers as wages and salaries—is currently at its lowest level in the post-war period. While the labor share fell sharply following the COVID-19 pandemic, research indicates that this specific decline is consistent with historical cyclical patterns seen in previous recessions and is driven by within-industry changes rather than shifts in economic activity between sectors.

Post-COVID Decline vs. Historical Trends

The post-COVID decline in the labor share is not a distinct economic phenomenon but rather a continuation of established cyclical dynamics. Following the pandemic, the labor share fell 1.6 percentage points below its pre-pandemic level, reaching an all-time post-war low.

Cyclical Alignment with Pre-2000 Recessions

Analysis of recession-expansion periods shows that the post-COVID trajectory mirrors patterns observed in pre-2000 recessions. Typically, the labor share increases during a recession, declines during the recovery phase, and eventually rises again later in the expansion. The post-COVID period followed this pattern: a sharp increase followed by a modest decline before flattening out.

The 2000s Structural Shift

While the recent decline is cyclical, the broader trend since the early 2000s represents a significant departure from the 20th century. For much of the post-war era, the labor share remained stable at approximately 63%. However, starting in the early 2000s, it entered a sustained decline, with a particularly steep drop during the Global Financial Crisis (GFC). Unlike pre-2000 episodes, the labor share following the dotcom bubble and the GFC did not meaningfully rebound during the subsequent expansions.

Drivers of the Labor Share Decline

The decline in the aggregate labor share is driven by internal industry dynamics rather than the reallocation of economic activity across different sectors.

Within-Industry vs. Between-Industry Changes

Sectoral reallocation—the shift of economic output from one industry to another—does not drive the aggregate labor share decline. A "shift-share" decomposition of the payroll share reveals that declines during the COVID-19 pandemic and the two previous recessions were entirely driven by changes within industries (e.g., changes in how much a specific sector pays its workers relative to its output) rather than between industries (e.g., output shifting from high-labor-intensity sectors like healthcare to low-labor-intensity sectors like manufacturing).

Long-Term Structural Forces

Academic literature identifies several long-run forces contributing to the sustained downward trend since the 2000s:

• Technological Change: Increased automation and software reducing the reliance on human labor.
• Superstar Firms: The rise of dominant firms that capture a larger share of aggregate income.
• Increasing Markups: Firms exercising greater pricing power to increase capital shares over labor shares.

Community Insights and Counterpoints

Discussion among economists and observers highlights several alternative theories and societal implications regarding the decline of the labor share:

Statistical and Demographic Factors

Some observers suggest the decline may be influenced by factors not captured in the primary analysis:

• Tax Law Shifts: One perspective suggests a "statistical illusion" where income previously classified as labor shifted to LLCs or S-corps for tax advantages, moving income from W2 wages to corporate distributions.
• Demographic Shifts: The retirement of the Baby Boomer generation may lower the labor share as a large cohort shifts from earning wages to living on savings.

Economic and Political Implications

Critics of the current trend argue that the decline reflects a systemic shift in bargaining power:

"I think this is part of a long term development where technology and globalization slowly erode workers bargaining power. Basically you only build a factory in the US if you can keep labour costs low enough and the manufacturing automated enough so that you can still compete with other manufacturing hubs."

Other contributors suggest that the persistent gap between capital and labor returns necessitates a debate on structural solutions, such as Universal Basic Income (UBI) or increasing the minimum wage to stimulate consumer spending among the middle and lower classes.