In 1995, the Social Security Administration (SSA) began mailing annual earnings and benefit statements to workers aged 60 or older. By 2000, SSA was sending these statements to all workers aged 25 or older. It was the largest customized mailing ever undertaken by a federal agency. This article describes the development and implementation of the Social Security Statement; the changes in its distribution, content, and appearance over time; its relationship to SSA's strategic plans; and the surveys SSA commissioned to measure public awareness and knowledge of Social Security.

The recent development of evidence-based behavioral health and vocational rehabilitation interventions for persons with serious psychiatric impairments created the impetus for exploring the efficacy of those interventions if they were widely available to Social Security Disability Insurance beneficiaries. As a first step in this endeavor—a multisite randomized trial for providing interventions to beneficiaries with psychiatric impairments—the Mental Health Treatment Study was implemented. The authors report on the subject recruitment patterns for the study, including assessment of take-up rates, and on the statistical analysis of the relationships between beneficiaries' characteristics and the probability of enrollment. Results indicated that take-up rates among potential MHTS subjects with confirmed telephone contacts met or exceeded rates for previous Social Security Administration randomized trials, and beneficiaries with administrative records of recent vocational or labor-market activity were most likely to enroll. The authors discuss implications of their analyses on recruitment in similar interventions in the future.