Psychometric properties of the 25-item Work Limitations Questionnaire in Japan: factor structure, validity, and reliability in information and communication technology company employees.
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.
Yuko
Y
Kono
Eisuke
E
Matsushima
Masayo
M
Uji
D000328:Adult; D000368:Aged; D002055:Burnout, Professional; D004185:Disability Evaluation; D004526:Efficiency; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D007564:Japan; D007588:Job Satisfaction; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D016272:Occupational Health; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires