Stressors influence work ability in different age groups of nursing professionals: 2-year follow-up.

Work stressors influence work ability - WA - and increasing age is associated with functional aging. We sought to establish whether work stressors differentially influence WA in young and aging nursing professionals. A cohort (2009-2011) composed of 304 workers at a hospital in Sao Paulo responded questionnaires Effort-Reward Imbalance (ERI), Job Stress Scale (JSS), Work-Related Activities That May Contribute To Job-Related Pain and/or Injury (WRAPI) and Work Ability Index (WAI). Changes in perceived exposure to stressors in each age group (< 45 and ≥ 45 years old) were compared to delta-WAI (difference between initial and final WAI score) by means of the Mann-Whitney test. There was a worsening in WAI (p = 0.609) without difference between the groups. WA impairment was associated with intensification of stressors ERI (p = 0.004), overcommitment (p = 0.002), social support (p = 0.014) and WRAPI (p = 0.004) among the younger workers, but with poorer ERI (p = 0.047) only among the older ones. While among the younger workers WA was influenced by the intensification of various stressors, in the case of the older ones it was influenced by effort-reward imbalance only, indicating that interventions should be differentiated according to age groups.