Employers establish retirement plans both to help them attract workers with valuable skills and to enable older workers to retire without facing the prospect of inadequate income. Employers must balance the goals of providing adequate retirement income with controlling the cost of the retirement plan. For employers in the private sector, another important consideration is the regulatory environment in which their retirement plans must operate. Private-sector retirement plans must comply with the relevant provisions of federal law, including the Employee Retirement Income Security Act (ERISA), the Age Discrimination in Employment Act (ADEA), and the Internal Revenue Code. This book examines the federal employees retirement system benefits and financing, as well as the role of the Thrift Savings plan and budget and trust fund issues.