📊 New research worth sharing, straight from the U.S. Census.
A new working paper from a group of leading employee-ownership researchers (Kurtulus, Hoyt, Ouimet, Blasi, Kruse, Freeman, and Castellano, published March 2026 on SSRN) puts hard numbers on a thesis many of us have built businesses, plans, and policy positions around: broad-based employee ownership drives real, measurable productivity gains. It is worth reading in full, and worth keeping close for the next conversation with an issuer, board, or advisor weighing whether broad-based ownership belongs on the table.
The researchers analysed roughly 44,000 U.S. manufacturing workplaces (across about 22,500 firms) over a five-year panel (2010 to 2015). They built the data set by linking four U.S. Census and Department of Labor sources for the first time:
- The Management and Organizational Practices Survey (MOPS), the largest management survey ever conducted of U.S. manufacturing, giving a per-establishment score on 16 structured-management practices.
- The Annual Survey of Manufactures (ASM), the source of the productivity measure (value of shipments per production-worker hour).
- The Longitudinal Business Database (LBD), tracking establishments over time.
- The U.S. Department of Labor Form 5500 pension records, identifying which firms have an Employee Stock Ownership Plan (ESOP) and how much each plan holds.
That combination matters. Almost every previous study of ownership and productivity leaned on publicly-traded firms, where employee ownership averages just 2 to 3 percent. This new data finally lets researchers look at closely-held companies, which represent more than 99 percent of U.S. ESOPs, and where ownership stakes are typically far larger. Here's what stood out.
🚀 Ownership pays off, measurably
Establishments whose firm adopted an ESOP between 2010 and 2015 saw a 5.6 to 6.7 percent boost in labor productivity (roughly 1.1 to 1.3 percent per year), even after controlling for the MOPS structured-management index. So this isn't "well-managed companies happen to also offer equity, and that's why they're productive." The model nets out management quality. The ownership itself moves the needle.
The dose-response result is even more striking. When the researchers replaced the simple "has an ESOP, yes or no" variable with a continuous measure (ESOP assets per active employee) and used an instrumental-variables approach to handle endogeneity (instrumenting with pre-period 2008 and 2009 ESOP asset values plus state and industry indicators), they found that:
A $100,000 increase in ESOP assets per active employee is associated with a 25.7 to 26.5 percent increase in labor productivity over the five-year window. That works out to roughly 5.1 to 5.3 percent per year.
In other words: more ownership, more productivity. The relationship scales.
One subtle finding worth flagging: the productivity lift from ESOPs is largest at workplaces with less structured management (the bottom of the MOPS index distribution) and still positive (though smaller) at the top. Ownership seems to do more of the heavy lifting where formal management practices are thinner. That has interesting implications for which kinds of companies stand to gain the most.
🪄 The magic happens when equity meets bonuses
One of the most powerful results sits in the interactive models. Establishments that adopted an ESOP while also maintaining broad-based group performance pay (meaning bonuses tied to team, establishment, or firm-level performance, paid to at least two-thirds of non-managers) saw productivity growth of 12.93 percent over the five years, an average of about 2.6 percent per year. That is meaningfully larger than either practice alone.
For reference, the standalone effects in the same model were modest:
- Adopting broad-based group performance pay: roughly 2.0 to 2.5 percent productivity gain.
- Adopting broad-based information sharing (non-managers reviewing KPIs and aware of establishment objectives): roughly 2.4 percent.
So the bundle does more than the sum of its parts. It is a useful corrective to design discussions that treat ownership and performance pay as alternatives. The data argues the opposite: ownership lands hardest when it sits inside a clear performance framework with shared information and shared upside. The paper gives that bundled approach Census-grade evidence.
🎁 The "gift exchange" effect is real
Behind the numbers sits a 40-year-old theoretical idea from George Akerlof: gift exchange. Workers don't treat equity as a substitute for fair pay. They treat it as a gift that arrives on top of market wages, and they reciprocate with higher effort, better cooperation, and a willingness to hold each other to a higher standard.
The paper sits this finding inside a stack of prior evidence: ESOP firms generally pay at or above market levels (so ownership comes on top of, not in place of, salary); workers with company stock are measurably more willing to speak up to a shirking coworker (Freeman, Blasi and Kruse, 2010); and a 2016 meta-analysis spanning 102 studies and 56,984 firms found a small but consistently positive relationship between ownership and firm performance (O'Boyle, Patel and Gonzalez-Mule). The new Census paper raises the quality bar on that body of evidence: bigger sample, better controls, and the first representative look at closely-held firms where ESOPs are concentrated.
The mechanism also explains why the free-rider critique (the "1/N problem", where any individual's share of the upside shrinks as the group gets larger) doesn't dominate in practice. When workers view ownership as a gift and feel collectively responsible, peer accountability fills the gap.
🧭 How we read this at Optio
Optio's mission is to make it simple to make every employee in successful companies, an owner. This study is the sharpest empirical case yet for why that mission matters, not only for fairness or alignment, but for measurable business outcomes. A few of the takeaways we are sitting with, and that we think are worth carrying into client and board conversations:
- Win-win-win, validated. The data argues against framing ownership as a zero-sum transfer. Employees treat ownership as a gift and reciprocate with higher effort, the work gets more productive, and the resulting value flows through to customers and shareholders too. The interests align rather than trade off.
- More employee owners, more impact. Every additional employee owner is a contribution to the productivity and engagement effects this paper documents. Scale matters, and the case for expanding access (more issuers, broader participation, deeper stakes) is now harder to wave off as ideology.
- Ownership plus a performance framework is the playbook. The 12.93 percent synergistic result is a direct argument for treating broad-based ownership as one piece of a high-engagement bundle, alongside clear performance signals and shared information, rather than as a standalone perk.
Questions clients and board members will likely ask
"What about dilution? Is 2 percent equity really worth a 1.1 percent productivity gain?"
These aren't the same currency. Dilution is a one-time transfer of ownership percentage. Productivity is a recurring annual gain that compounds. A 1.1 percent annual productivity lift, compounded against a baseline you'd otherwise have grown, typically breaks even on 2 percent dilution inside two to five years, and everything after that is upside. And note that the IV results in this paper point to materially larger effects at higher levels of ownership intensity.
"This is U.S. manufacturing from 2010 to 2015. Does it apply to my European tech company in 2026?"
Fair point. The specific magnitudes are context-dependent, and the paper is careful about this. But the underlying mechanisms (alignment, reciprocity, peer accountability, the gift-exchange dynamic) are well-supported across decades of research, across industries, and across geographies. Earlier work by Jones and Kato found a 4 to 5 percent productivity gain from ESOP introduction in Japanese firms, with the payoff arriving three to four years out. The mechanisms travel; the magnitudes will vary.
"Couldn't this just be selection bias? Better companies adopt ESOPs?"
The researchers controlled for this in two ways. First, establishment fixed effects: every workplace is compared to itself across time, so any unobserved "this is just a good company" effect drops out. Second, instrumental variables: they instrumented the endogenous ESOP-asset variable with pre-analysis 2008 and 2009 values plus state and industry indicators, separating the causal channel from selection. The effect holds in both specifications.
"Does this work for stock options or RSUs, not just ESOPs?"
The study is ESOP-specific, since ESOPs are the dominant broad-based ownership vehicle in the U.S. and are required by ERISA to include all full-time employees. The alignment, reciprocity and peer-monitoring logic carries over to options, RSUs, and similar instruments, but we shouldn't overclaim the exact numbers for structures the paper didn't measure.
"Does productivity translate to shareholder value?"
Not one-to-one. Margins, capital intensity, pricing power and market conditions all matter. But sustained gains in output per worker hour generally flow through to better unit economics, and the productivity-growth specifications in the paper (Table 9) point to a sizeable total effect of ESOP adoption on five-year labor-productivity growth.
About the paper
Kurtulus, F. A., Hoyt, E., Ouimet, P., Blasi, J., Kruse, D., Freeman, R., and Castellano, W. (2026). Employee Share Ownership, Management Practices, and Labor Productivity: An Analysis Using Establishment Level Micro-Data from the U.S. Census. SSRN working paper, 29 March 2026.
Read the full paper on SSRN.
