Objective: The 25-item Work Limitations Questionnaire (WLQ-25) measures presenteeism but has not been sufficiently validated in a Japanese population.
Methods: A total of 451 employees from four information technology companies in Tokyo completed the WLQ-25 and questionnaires of other variables on two occasions, 2 weeks apart.
Results: The WLQ-25 yielded a two-factor structure: Cognitive Demand and Physical Demand. These subscales showed good internal consistency, and both were associated with adverse working conditions, greater perceived job strain, lower skill use, poorer workplace social support, and less satisfactory psychological adjustment. Intraclass correlation coefficients of the two WLQ-25 subscales between time 1 and time 2 were 0.78 and 0.55, respectively.
Conclusions: This study suggests acceptable psychometric properties of the WLQ-25 in Japan.
From the Section of Liaison Psychiatry and Palliative Medicine (Ms Kono and Dr Matsushima), Division of Comprehensive Patient Care, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; and Department of Bioethics (Dr Uji), Kumamoto University Graduate School of Life Sciences, Kumamoto, Japan.
Address correspondence to: Yuko Kono, MA, Section of Liaison Psychiatry and Palliative Medicine, Division of Comprehensive Patient Care, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan (firstname.lastname@example.org).
All the authors declare that they have no conflicts of interest.