Key Takeaways

• Pension fund boards have a fiduciary responsibility to act in members’ best interests, yet identifying member preferences on contested investment issues remains challenging with standard engagement tools.
• Combining deliberative mini-publics, where representative groups of members deliberate on complex issues, with fund-wide binding votes offers a structured way to elicit informed member preferences and test whether they align with the broader membership.
• Validating mini-public outcomes at scale can strengthen the legitimacy of strategic investment decisions, particularly those involving explicit trade-offs, and may help reduce polarization among members.

Watch the webinar recording here and the full paper here.

Summary

Motivation: Pension fund boards routinely make investment decisions on behalf of large and diverse member bases, often on contentious issues such as sustainability and impact investing. Members typically have limited direct influence over these decisions, and standard engagement tools such as surveys are prone to biases and information asymmetry. Combining deliberative mini-publics – small, representative groups of members brought together to become informed and deliberate on complex topics – with fund-wide binding votes on key issues offers a potential approach to incorporating informed member preferences into strategic investment decisions.

Methodology: The case study focuses on Pensioenfonds Detailhandel, a Dutch collective defined contribution pension fund serving retail workers. The fund implemented a two-stage engagement process to inform its sustainable investment strategy. In the first stage, the fund selected 50 of its 1.3 million members using a robust sortition process to participate in a three-day in-person programme consisting of expert-led sessions and moderated peer group discussions. This deliberative mini-public produced 49 recommendations, covering divestment, engagement, and impact investing. In the second stage, the Board selected expanding impact investing as a key recommendation that required broader support and submitted it to a fund-wide binding vote (“maxi-public”). Members were informed about the size of the proposed allocation and its potential financial implications, with some participants also receiving information about the mini-public’s recommendations.

Findings:

• The mini-public substantially improved participants’ understanding of pension investing and sustainable finance. As participants became better informed, preferences shifted away from exclusion-based approaches toward a greater emphasis on achieving measurable social and environmental outcomes. This shift included a greater willingness to accept financial trade-offs.

• The maxi-public results aligned with the mini-public recommendation, with 42% supporting expanding impact investing and 30% voting to keep impact investing unchanged at 1% of assets.

• Baseline support for expanding impact investing differed across demographic and political groups, with lower initial support among more conservative respondents.

• Providing information about the mini-public’s recommendations increased support for impact investing expansion among both left- and right-leaning respondents, resulting in reduced polarization.

• Participants reported that their views were most often shaped by a combination of expert input and peer deliberation, rather than by experts alone, highlighting the importance of peer discussions in decision-making.

Q&A Highlights:

• Communicating financial trade-offs: While several approaches exist to explain the costs of impact investing, communication focused on how lower expected returns could translate into lower pensions in retirement.

• Appropriate scope of use: The combined use of deliberative mini-publics and binding maxi-votes is best suited for strategic, judgement-based decisions involving normative trade-offs. Technical investment decisions should remain the responsibility of boards and investment teams.

• Depolarization effects: Increased information was associated with convergence of views and reduced polarization, contrasting with existing research suggesting that additional information on contested issues can reinforce divisions.

• Applicability across funds and contexts: Replication across geographies and pension designs is feasible but potentially resource-intensive, with digital formats offering a more practical option for smaller funds.