 This study examined the construct validity of the Danish version of the Work Rehabilitation Questionnaire, WORQ. The study compared the physical capacity items of WORQ to objective, standardized measures of physical capacity and selected SF-36 physical items. Results showed a moderate to strong correlation between WORQ and SF-36 items and a weak to moderate correlation between physical capacity items of WORQ and objectively measured physical capacity measures. Cross tabulations and calculations yielded overall higher NPVs than PPVs, suggesting that WORQ may be useful for identifying individuals who need further assessment. This article was authored by Ida Skavborg-Ferp, Katrine Balsertijsson, Ruben Skorpiso, and others.