This Technical Committee Report examines four tiers of retirement income: (1) social security; (2) private and public occupational pension programs; (3) income from assets and savings; and (4) needs-tested programs. A summary of principal findings and recommendations is followed by three sections discussing the statistical basis for this report. The first section explores improvements in the economic status of the aged and points out remaining gaps. The second section examines the role of the four tiers as sources of retirement income. The final section discusses projected future population and cost trends. A more detailed discussion of committee findings and recommendations is presented in the section, "Public Policies to Encourage Adequate Retirement Income," which concludes that social security, the present and future mainstay of the elderly, should be supplemented by programs for private and non-federal government employment. The report notes that savings provide little retirement income and that retirees who can work should be helped to find and keep employment. In addition, needs-tested programs are recommended only as a last resort. A supplementary view of a committee member and an executive summary of this report are also included. (NRB)