Comparing Strategies for Recruiting Small, Low-Wage Worksites for Community-Based Health Promotion Research

HealthLinks is a workplace health promotion program developed in partnership with the American Cancer Society. It delivers a package of evidence-based interventions and implementation support to small worksites in low-wage industries. As part of a randomized, controlled trial of HealthLinks, we studied approaches to recruiting these worksites.

This study aims to guide future recruitment for community-based worksite health promotion interventions by comparing three approaches, including leveraging relationships with community partners.

We recruited 78 small, low-wage worksites in King County, Washington, to participate in the trial via three approaches: phone calls to companies on a purchased list ("cold"), phone calls to a list of eligible companies provided by a health insurer ("lukewarm"), and personal referrals from local health insurers and brokers ("warm"). Eligible and interested worksites received an in-person visit from researchers and completed additional steps to enroll.

Of the worksites screened and deemed eligible, 32% of the "cold" worksites enrolled in HealthLinks, as did 48% and 60%, respectively, of the "lukewarm" and "warm" worksites. Compared with "warm" worksites, "cold" worksites were twice as likely to be ineligible.

Two distinct factors help explain why "warmer" worksites were more likely to enroll in HealthLinks. First, eligibility was significantly higher among warmer referrals. Second, most of the warm-referred worksites eligible for the study agreed to meet in person with the project team to hear more about the project.

"Warmer" recruitment approaches yielded higher recruitment. Leveraging relationships with community partners can help researchers identify and successfully recruit small, low-wage worksites.