Revisiting Labour Supply Trends Across Countries

Why It Matters

Understanding the drivers of labor‑supply convergence informs policy on taxes, social safety nets, and workforce participation, directly affecting productivity and growth prospects across advanced economies.

Key Takeaways

• US hours gap halved by 2010s after 1990s lead
• Decline driven by expanding non‑employment benefits, especially Medicaid
• Non‑US rise linked to higher wages and lower work costs
• Convergence stems mainly from extensive margin – employment rates shift
• Policy shifts differ: US benefits dominate, Europe sees mixed tax effects

Pulse Analysis

The debate over labor‑supply trends has resurfaced as economists revisit why some nations work more than others. Early studies, notably Prescott (2004), highlighted a stark divergence in the 1990s, with Americans logging more hours than their European counterparts. By extending the analysis to the 2010s, Birinci et al. reveal that this gap has narrowed dramatically, prompting a fresh look at the underlying mechanisms. The new framework incorporates heterogeneous households, intensive and extensive margins, and detailed tax‑benefit structures, allowing a side‑by‑side comparison of the United States and its G7 peers.

In the United States, the primary catalyst for reduced hours is the rapid growth of non‑employment benefits. Programs such as unemployment insurance, disability aid, and especially Medicaid have expanded both in coverage and generosity, improving the outside option for low‑earning individuals. This shift makes work less financially compelling, particularly for those whose earnings would not substantially exceed benefit levels. The result is a stagnating or declining employment rate, which accounts for most of the observed decline in total hours worked, underscoring how health‑related safety nets can reshape labor market dynamics.

Conversely, many non‑U.S. advanced economies have experienced rising labor supply driven by a mix of higher potential wages, lower fixed costs of employment, and reduced disutility of work. While tax reforms play a modest role in most cases, changes in benefit replacement rates have varied effects—sometimes dampening hours, other times boosting them when paired with lower work costs. This heterogeneous landscape illustrates that policy levers operate differently across borders, and that the convergence in hours worked reflects a complex interplay of economic incentives rather than a single dominant factor. Policymakers must therefore tailor reforms to their specific labor‑market structures to sustain participation and growth.