Determinants of Blue-Collar Workers’ Participation in a Sector-Initiated Worksite Health Promotion Program in Freight Transport: An Observational Study

Purpose Worksite health promotion programs (WHPPs) can promote a healthier lifestyle for blue-collar workers, yet their participation is generally low. From a social ecological perspective, this study aims to identify determinants associated with blue-collar workers’ initial WHPP participation. Design Observational study. Setting A freight transport sector-initiated WHPP in the Netherlands. Participants The study sample included 3916 blue-collar workers. Data from 976 white-collar workers were used for comparisons. Measures Data were obtained from an online health survey as part of the WHPP. Participation in a follow-up intervention was measured by attendance registration of the first consultation. Analysis Associations between determinants and participation were tested, using logistic regression. Interactions of determinants with job group were studied to explore differences in associations with participation between blue- and white-collar workers. Results The final multivariable logistic model identified contract security ( OR = 2.06), a neutral work-life balance ( OR = 1.24), more chronic conditions ( OR = 1.67), poorer self-rated health ( OR = 2.17), and insufficient sleep ( OR = 1.24) as being associated with WHPP participation. The determinants were largely consistent across blue- and white-collar workers. The model showed good fit, but provided little explanatory power (Nagelkerke R 2 = .058). Conclusion While a sector-initiated WHPP may be able to reach workers not typically reached by employer-based programs, barriers still seem to exist for workers with less secure contracts, poor work-life balance, and fewer health complaints.