The Trusted Bridge: Community Health Workers and the Infrastructure of Trust

The part of health that happens outside the clinic

Most of what determines a person's health happens before they ever reach a doctor: where they live, whether they can get to an appointment, whether the prescription is affordable, whether anyone at home understands the diagnosis. The clinical encounter is brief and occasional. The life around it is constant. Bridging that gap is the work of community health workers, and this primer is about why that role is one of the better-evidenced investments in health, and why its promise so often goes unrealized for a reason that has little to do with the work itself.

The argument has two parts. Community health workers produce measurable improvements in health and measurable savings, drawn from a deep evidence base. And the chronic instability of how they are funded undercuts the very trust that makes them effective, which is a governance problem rather than a question of whether the model works.

What the role is, and why trust is the mechanism

Community health workers, also called promotores, patient navigators, community health representatives, or peer outreach workers, are frontline workers drawn from the communities they serve. Their defining qualification is not a clinical credential but a shared life experience with the people they support. They provide health education, help people navigate complex systems, coordinate care, and connect households to the social supports that shape health.

Trust is the active ingredient. Because they come from the community, they can ask the questions a clinician cannot ask in fifteen minutes, reach people that institutions struggle to reach, and translate between the world of the health system and the world of the household. Hiring workers from the community they serve also keeps employment and income inside neighborhoods that have historically seen too little of both, so the role does a second kind of good while it does the first. The trust is not a soft benefit layered on top of the work. It is the thing that makes the work function.

The evidence

The evidence base here is unusually solid for a community-based intervention. Research consistently finds that community health worker programs improve chronic disease management, increase access to preventive care, reduce hospitalizations and emergency department visits, and lower overall costs, with effects documented across diabetes, hypertension, asthma, cancer screening, and mental health.

The return-on-investment work is especially striking because it is not all built on the weaker study designs that tend to overstate savings. A randomized controlled trial of one standardized community health worker model found that every dollar invested returned roughly two and a half dollars to a Medicaid payer within the same fiscal year. Other program evaluations across chronic-disease management land in a similar range, generally returning at least a dollar or two for every dollar spent through reduced hospitalization and better-managed conditions. For an intervention that also advances equity and builds local employment, that is a rare combination of social and fiscal return.

The instability that undercuts it

If the model works and pays for itself, why is it perpetually fragile? The answer is structural, and it is the heart of this primer. Community health workers face chronic workforce instability: low pay, limited career advancement, thin organizational support, and above all unstable, short-term, grant-dependent funding. Programs are stood up on a pilot grant, demonstrate results, and then lose funding when the grant cycle ends.

This instability does specific damage to the one thing that makes the role work. Trust is built slowly and household by household, and it lives in continuous relationships. When a program ends and its workers leave, the relationships break, the institutional memory walks out the door, and the community learns, again, that the help was temporary. The next program that arrives has to rebuild trust that the last one spent and abandoned. The funding model, in other words, is corrosive to the asset the funding is meant to create. A model that returns more than it costs is treated as a pilot to be repeatedly restarted rather than infrastructure to be sustained.

What this means for community health infrastructure

Reframing community health work as infrastructure rather than as a series of pilots changes what good looks like. The measure of success is not whether a grant-funded program shows results during its funding window. Almost all of them do. The measure is whether the trusted relationships, the trained workers, and the institutional knowledge persist across funding cycles and leadership changes, because that persistence is where the long-run health and cost benefits actually accrue.

That reframing is squarely the Foundation's concern. Stable financing pathways, career structures that retain workers, and community-held governance that keeps a program accountable to the people it serves are what turn a promising pilot into durable health infrastructure. The field already knows the model works. The unfinished work is building the arrangements that let the trust, once earned, be kept rather than spent and rebuilt. The bridge is only as useful as it is permanent.

References

1. Health Resources in Action. Leading With Trust: How Community Health Workers Are Shaping the Future of Public Health (2025). CHWs improve chronic disease management, reduce hospitalizations, and lower costs; persistent workforce challenges including unstable funding and burnout. https://hria.org/community-health-workers/

2. Basu S, et al. Evidence-Based Community Health Worker Program Addresses Unmet Social Needs And Generates Positive Return On Investment. Health Affairs (2020). Randomized controlled trial of the IMPaCT model; every dollar returned $2.47 to a Medicaid payer within the fiscal year. https://www.healthaffairs.org/doi/10.1377/hlthaff.2019.00981

3. Center for Health Care Strategies. Leveraging Community Health Workers to Address Rural Health Care Needs (2025). Evidence on chronic disease management, access to primary care, and positive return on investment. https://www.chcs.org/resource/leveraging-community-health-workers-to-address-rural-health-care-needs/

4. County Health Rankings & Roadmaps. Community health workers. IMPaCT estimated to return about $2 per dollar invested through reduced hospitalization; potential to decrease disparities. https://www.countyhealthrankings.org/strategies-and-solutions/what-works-for-health/strategies/community-health-workers

5. Economics of Community Health Workers for Chronic Disease: Findings from Community Guide Systematic Reviews. PMC. Cost and cost-effectiveness across cardiovascular disease and type 2 diabetes prevention and management. https://pmc.ncbi.nlm.nih.gov/articles/PMC6501565/

6. Highmark Health. Community Health Workers: Trust Improves Health Equity and Outcomes (2024). Trust as mechanism; hiring from the community builds local employment. https://www.highmarkhealth.org/blog/future/Community-Health-Workers-Trust-Improves-Health-Equity-Outcomes.shtml