Physical Work Exposures of Older Workers: Does Measurement Make a Difference?

Physically demanding work at later ages, which is especially prevalent among disadvantaged groups, is associated with long-term health outcomes and may contribute to health inequality over the life course. Past studies of these issues have relied on occupational characteristics from the Occupational Information Network (O*NET), but few have assessed how O*NET compares to survey reports when measuring occupational exposures in analyses of socioeconomic status, work conditions, and health. We compare Health and Retirement Study (HRS, N = 16,683 working respondents) and O*NET measurements of general physical activity, frequency of lifting/handling objects, and frequency of stooping-related postures required at work. Pearson correlations between the HRS items and corresponding O*NET items vary from weak to moderate for lifting/handling and stooping-related postures to relatively large for general physical activity. Though they are measured on different scales, both the HRS and O*NET measures of physical demands reveal similar sex, racial/ethnic, and educational differentials in exposure to physically strenuous work. We fit random effects Poisson models to assess how these measures predict accumulation of functional limitations, a potential long-term consequence of strenuous working conditions. Comparable HRS and O*NET measures have similar associations with functional limitations. We also consider an average of physical demand items available in O*NET, finding that this measure has similar associations with functional limitations as the O*NET measure of general physical activity. These results suggest that O*NET characteristics and HRS respondent reports produce comparable disparities in physical work exposures (PWEs) and associations between physically demanding work and declines in physical functioning.

Automated summary

Physically demanding work at later ages, especially among disadvantaged groups, is associated with health inequality. Comparing measurements from O*NET and HRS, it is found that both measures reveal similar disparities in physical work exposures and associations with declines in physical functioning.