Eklund M. Satisfaction with daily occupations: a tool for client evaluation in mental health care. Scand J Occup Ther 2004; 11: 136 Á/142.Research findings suggest that in order to clarify the relationship between occupation and health, occupation needs to be framed in several different ways. One facet of occupation is satisfaction with daily occupations, assessed using the Satisfaction with Daily Occupations (SDO) instrument. The purpose was to investigate some of the SDO's psychometric properties when applied on people with persistent mental illness. Discriminant validity against occupational value and quality of life was investigated, as was internal consistency and ability to discriminate between people with different types of daily occupation. A total of 103 patients from a psychiatric outpatient unit were selected, representing people in work or studying, people visiting activity centres, and people with no organized daily occupation. The SDO showed no or weak relationships with occupational value and quality of life, and the internal consistency was alpha0/0.80. Factor analysis revealed loadings between 0.44 and 0.79. Five out of 9 items discriminated between the occupational groups. In conclusion, the SDO showed discriminant validity against occupational value and quality of life, had acceptable internal consistency, and formed one single construct. The SDO can be improved by means of further revision and psychometric testing, but the present version should be valid and reliable enough to use in occupational therapy practice and research.