Effectiveness of a Participatory Voice Intervention on Psychological Well-Being Among Warehouse Workers: Results From the Fulfillment Center Intervention Study, United States, 2021‒2023
Author(s)
Siebach, Kirsten F.
Diaz-Linhart, Yaminette
Kubzansky, Laura D.
Berkman, Lisa F.
Wang, Molin
Ge, Lin
Kowalski, Alexander M.
Rahmandad, Hazhir
Kelly, Erin L.
Date Issued
January 15, 2026
Journal
American Journal of Public Health
Publisher
American Public Health Association
Citation
Siebach, Kirsten F., Diaz-Linhart, Yaminette, Kubzansky, Laura D., Berkman, Lisa F., Wang, Molin et al. 2026. "Effectiveness of a Participatory Voice Intervention on Psychological Well-Being Among Warehouse Workers: Results From the Fulfillment Center Intervention Study, United States, 2021‒2023." American Journal of Public Health.
Version
Author's final manuscript
Abstract
Objectives. To examine whether a novel workplace intervention designed to increase worker voice can
reduce psychological distress and improve emotional vitality at 6- and 12-months follow-up.
Methods. We conducted a cluster-randomized trial in 16 fulfillment centers throughout the United States
between 2021-2023. Data were collected at three time points; 2813 workers participated in at least one
survey. Treated fulfillment centers established a new, participatory committee called the Health and
Well-Being Committee (HaWC). We compared differences in psychological distress and emotional
vitality and explored differential treatment effects by gender.
Results. At baseline, moderate or severe psychological distress was 51%. Intervention sites had lower
average psychological distress at the 6-month follow-up compared to control sites, with no significant
differences at 12-month follow-up. Gender moderation analyses suggest the HaWC was particularly
effective in reducing psychological distress among men at 6-month follow-up.
Conclusions. Our findings suggest that opportunities for workers to share concerns to a committee of
their peers tasked with identifying solutions can support mental health. Our study contributes important
experimental evidence on workplace interventions that improve the well-being of low-wage U.S.
populations.
MIT Department
Sloan School of Management
Terms of Use
Creative Commons Attribution-Noncommercial-ShareAlike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.2105/AJPH.2025.308352
