Although significant numbers of social service clients experience mental health problems, virtually no research has examined the responsiveness of social service agencies to mental disorder. This article examines the extent to which client depression is reflected in records of a public social service agency, community long-term care (CLTC). Researchers assessed new, consenting CLTC clients for depression using standardized research criteria in a telephone interview. Agency case records were abstracted to determine the extent to which client depression was noted. Sensitivity and specificity of depression notation were 25.21 percent and 92.80 percent, respectively, indicating that agency records reflected depression for about one in four clients meeting depression criteria. Factors associated with accurate depression notation included cognitive impairments, low social support, psychotropic medications, and mental health treatment. The depression notation rates found are comparable to those in medical settings. Structured screening and assessment might enhance detection of mental disorder for social service clients.