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Background Work ability is predicted by age- and work-related psychosocial hazards; however, its association with work experience has not been studied. Work ability has not been studied in prison environments as well.

Aims To describe work ability and its associates among prison workers.

Methods A cross-sectional study was carried out in two prisons in Spain, one large and one medium prison, randomly selected from 17 in total. Prison workers were randomly administered a voluntary anonymous questionnaire to measure work ability [Work Ability Index (WAI)], work-related psychosocial hazards (Spanish version of COPSOQ), sociodemographic, lifestyle and work-related variables.

Results Four hundred and forty-one workers (54%) participated. Results confirmed that older and more experienced workers (analysis of variance analysis) and workers in large prisons (t …