The Employee Benefit Research Institute (EBRI) is a nonpartisan, nonprofit public policy research organization based in Washington, DC, that has been researching economic security issues for almost 25 years. This EBRI Issue Brief synthesizes highlights of recent EBRI research on retirement benefits. Retirement data in this document include: Basics of employment-based benefits; Assets in retirement plans; Participants in retirement plans; 401(k) plan trends; Individual retirement accounts; Social Security; Lump-sum distributions; Public opinion on retirement; and, Small employers and retirement plans.