WASHINGTON, July 22 — The U.S. civilian labor force hit a record 170.7 million in January 2025, according to the Bureau of Labor Statistics. But that headline number masks a decades-long slide in the share of American adults actually working or looking for work. The figure that matters is the labor force participation rate — and it has been falling steadily since 2000.
The primary cause: the aging and retirement of the Baby Boom generation. By the numbers, the LFPR measures the ratio of the civilian labor force (people 16 and older, not institutionalized or on active military duty) to the same-age civilian population.
The BLS defines the labor force as employed plus unemployed civilians. In February 2020, at the onset of the COVID-19 pandemic, that workforce stood at 164.6 million.
The Long View
The labor force had risen every year since 1960 — except after the Great Recession, when it remained below 2008 levels from 2009 through 2011. That long expansion was driven largely by women entering the workforce in large numbers during the late 20th century. From 1948 to 2005, the overall U.S. LFPR climbed from about 59% to 66%.
Women’s participation more than doubled, from 32% to 59%, while men’s dropped from 87% to 73%. Investors will note that the recent record-high headcount doesn’t reverse the participation trend.
The bottom line: the workforce is bigger because the population is bigger and older, but a smaller slice of that population is in the labor force.
Why Prime-Age Data Matters
To isolate the aging effect from other demographic shifts, analysts focus on prime-age workers — those aged 25 to 54. A 2018 Congressional Budget Office study found that higher educational attainment correlates with higher labor force participation for this group. For prime-aged men who are out of the labor force, disability is often cited; for prime-aged women, family care is a common reason.
The Great Resignation of 2021 saw record voluntary turnover, but that was a churn within the workforce, not a net exit. The longer-run challenge remains structural: the aging Baby Boomers continue to retire, and younger cohorts are smaller.
Economic Consequences
The decline in LFPR carries broad economic implications. Potential labor shortages could put upward pressure on wages but also slow overall growth, as fewer workers are available to produce goods and services. For policymakers and business leaders, the trend raises questions about immigration policy, automation investment, and how to keep more prime-age Americans attached to the workforce.
What to watch next: the BLS data for the remainder of 2026 will show whether the post-pandemic recovery in participation — which had nudged up from pandemic lows — has stalled again, or whether the record headcount can coexist with a stable participation rate. Either way, the arithmetic of an aging population means this issue isn’t going away.
