The most underutilized labor pool in the U.S. economy is the cohort of workers between 50 and 70 who want to keep working and are pushed out — or never hired back — by employers acting on the most heavily evidenced bias in workforce research. The empirical case against age-as-a-screen is exceptionally strong; the operational practice of using it is exceptionally common. That gap, in a labor market that the BLS Employment Projections forecast will lose population in the prime working-age range over the next decade, is the most consequential mismatch in U.S. workforce policy.
The argument of this piece is concrete. Older workers are demonstrably as productive as younger peers on most measures, materially better on some, and dramatically cheaper to retain than to replace. The barriers to their fuller participation are largely employer-side and policy-side, not worker-side. And the firms and jurisdictions that solve this — through hiring-process reform, retention design, and phased-retirement options — are getting paid for the trouble in measurable ways.
The data on age and workplace performance
The single most-cited recent study is Axel Börsch-Supan and Matthias Weiss's 2016 paper in the journal Labour Economics, drawing on detailed productivity data from a Mercedes-Benz truck assembly plant. Workers were tracked individually on quality and output across their careers. The headline finding: productivity remained roughly flat or rose slightly with age across the 25–65 age range, with quality (defect rates) actively improving with age. The compensating mechanism was not surprising — older workers made fewer errors and recovered from disruptions more efficiently, even as raw physical speed declined.
That finding has been replicated, with some variation, across multiple industries and contexts. The Stanford Center on Longevity's 2024 "The New Map of Life" report and the AARP Longevity Economy Outlook 2024 both summarize the literature: workers over 50 have lower turnover, lower absenteeism, comparable productivity in most knowledge work, and higher engagement on Gallup's measures than workers under 30.
And yet AARP's repeated surveys of workers over 50 find that roughly 64% report seeing or experiencing age discrimination at work. The EEOC received more than 14,000 age-discrimination complaints in 2023, despite the Age Discrimination in Employment Act of 1967 being one of the older federal employment-discrimination statutes. The 2009 Supreme Court decision in Gross v. FBL Financial Services made age discrimination meaningfully harder to prove than race or sex discrimination by requiring "but-for" causation — a doctrinal shift that has measurably reduced successful age-discrimination claims and is, in our reading, ripe for legislative correction.
The hiring filter that excludes older workers
The most consequential single mechanism is the way modern applicant-tracking systems and recruiter screening interact with résumé date stamps. Joanna Lahey's well-known 2008 field experiment in the Journal of Human Resources sent matched résumés to employers, varying only the implied age of the applicant; older applicants received roughly 40% fewer callbacks than identical younger applicants. David Neumark and colleagues replicated and extended this work in their 2019 paper in the same journal, finding age discrimination at the callback stage that was statistically larger than racial or gender discrimination in some labor-market segments.
The practical consequence is that workers over 50 who lose a job take significantly longer to return to comparable work than younger workers. AARP's 2023 long-term unemployment data shows that workers over 55 are unemployed for an average of 39 weeks after job loss, compared to 22 weeks for workers under 35. Once they return, they typically take meaningful pay cuts and often shift down in role and responsibility — a phenomenon AARP and the Urban Institute have documented as "scarring."
Four interventions with strong evidence behind them
Skills-based hiring with structured interviews
The mechanism that filters out older workers is largely informal: a recruiter glances at graduation dates, makes assumptions about culture fit, and rejects. Structured hiring processes — defined competency rubrics, work-sample tests, blind résumé review — measurably reduce age (and other) bias. Iris Bohnet's research at Harvard's Kennedy School, summarized in What Works: Gender Equality by Design (Harvard, 2016), establishes the underlying principle: bias is largely a process problem, and process redesign is a more reliable fix than individual training.
Phased retirement and bridge employment
The "all-or-nothing" structure of U.S. retirement — full-time work until a specific date, then nothing — is increasingly an anachronism. The MIT AgeLab, the Stanford Center on Longevity, and the Harvard T.H. Chan School of Public Health have all advocated for phased-retirement structures that allow workers to reduce hours gradually over 5–10 years. The empirical case is strong: workers offered phased options stay in the workforce longer, contribute more lifetime tax revenue, and report better post-work health outcomes. The U.S. tax code (specifically the in-service-distribution rules in qualified retirement plans) still makes phased retirement administratively awkward; reform here is a high-return, low-cost policy lever.
Health and longevity infrastructure
Working longer is feasible when workplaces accommodate the predictable physiological changes of aging — reduced peripheral vision, slower auditory processing, longer recovery from physical exertion, more frequent need for restroom breaks, and (importantly) more occasional medical appointments. None of these accommodations is expensive at the individual level; together, they are the difference between a 65-year-old being able to keep working and being pushed out.
Caregiver-leave policies that work for both ends of the age range
Workers over 50 are also disproportionately caregivers for aging parents, a fact AARP's 2024 caregiving research has documented in detail. Family-and-medical-leave policies that cover both parental leave (for younger workers) and elder-care leave (for older workers) have measurably better retention impacts than single-purpose policies. New York and California's relatively comprehensive paid-family-leave programs are the strongest U.S. examples.
For deeper coverage of all these dimensions, see our flagship piece on The Aging Workforce →.
The macroeconomic case
The labor-force-participation gap between U.S. workers aged 55–64 and the OECD average has been one of the most-noted but least-addressed features of the U.S. labor market. The 2024 OECD Employment Outlook shows the U.S. running below several peer countries in older-worker participation, despite generally tighter labor markets. Closing that gap would, by McKinsey Global Institute's 2024 "A New Future of Work in America" estimates, add roughly $1 trillion to U.S. GDP over the next decade — a number larger than most of the AI productivity estimates that get more policy attention.
That is not because older workers are exceptional. It is because the U.S. is going to need them. The BLS projects that the labor force will grow by only 0.4% per year over the next decade, well below the historical rate. The largest single addition to growth potential is keeping more workers over 55 in the workforce longer.
The most-evidenced bias in American hiring is the one we still won't write a serious law about. Workers over 50 are not the problem — the recruiter glance at the graduation year is.
What changes between now and 2030
Three things are likely. First, demographic pressure will force more employers to actively recruit older workers — the workforce arithmetic is unforgiving, and the firms that adapt first will gain a hiring advantage. Second, federal policy on age discrimination will likely tighten, either through legislation reversing Gross's causation standard or through EEOC enforcement focused on algorithmic hiring. Third, retirement law will probably modernize, even if slowly, to make phased work and bridge employment more administratively feasible.
The firms that will be ahead are those that have already moved on hiring-process reform, retention design, and accommodation. None of these are charity. They are operational responses to a labor market that no longer has the surplus of prime-age workers it had a generation ago.
Updated May 21, 2026. This piece was substantively rewritten as part of NWLB's 2026 editorial refresh.
