Risk Aspects Of Investment Based Social Security Reform

Our current social security system operates on a pay-as-you-go basis; benefits are paid almost entirely out of current revenues. As the ratio of retirees to taxpayers increases, concern about the high costs of providing benefits in a pay-as-you-go system has led economists to explore other options. One involves "prefunding," in which a person's withholdings are invested in financial instruments, such as stocks and bonds, the eventual returns from which would fund his or her retirement. The risks such a system would introduce—such as the volatility in the market prices of investment assets—are the focus of this offering from the NBER. Exploring the issues involved in measuring risk and developing models to reflect the risks of various investment-based systems, economists evaluate the magnitude of the risks that both retirees and taxpayers would assume. The insights that emerge show that the risk is actually moderate relative to the improved return, as well as being balanced by the ability of an investment-based system to adapt to differences in individual preferences and conditions.

Social security reform in the United States continues to be a pressing and contentious issue, with advocates touting some form of a centralized or a privatized system of personal accounts. In general, centralized systems offer low administrative costs, but are potentially subject to political mismanagement and appropriation. Privatized account systems, on the other hand, offer higher yields with more flexibility, but may prove too expensive and logistically daunting to implement. Uniting learned and outspoken proponents on both sides of the debate, this volume provides the first comprehensive analysis of the issues involved in administering a system of essentially private social security accounts. The contributors together come to startlingly similar conclusions, generally agreeing that a centralized system of accounts could deliver the benefits of privatization in a feasible and cost-efficient way by accessing administrative mechanisms already in existence. This is perhaps the most far-reaching synthesis yet envisioned of functional and implementable social security reform.

Social security is the largest and perhaps the most popular program run by the federal government. Given the projected increase in both individual life expectancy and sheer number of retirees, however, the current system faces an eventual overload. Alternative proposals have emerged, ranging from reductions in future benefits to a rise in taxrevenue to various forms of investment-based personal retirement accounts. As this volume suggests, the distributional consequences of these proposals are substantially different and may disproportionately affect those groups who depend on social security to avoid poverty in old age. Together, these studies persuasively show that appropriately designed investment-based social security reforms can effectively reduce the long-term burden of an aging society on future taxpayers, increase the expected future income of retirees, and mitigate poverty rates among the elderly.

This paper shows how a new type of derivative product that could be provided by private financial markets could in principle be used to guarantee that an investment-based Social Security reform provides at least the level of real retirement income that is projected in current Social Security rules. In effect, future retirees could purchase a put option' that guarantees that the future retirement benefit will not fall below the level projected in current Social Security law or some other chosen level. To pay for this guarantee, they would agree to give up the part of the annuity payments which exceeds a given level, effectively selling a call option on the stream of payments. This market-based approach could be completely voluntary, leaving each individual to decide what level of guarantee he wants. The higher the minimum guarantee that the individual chooses, the more of the potentially higher returns he must give up. The financial market can thus tailor each individual's product to his own risk preferences. Alternatively, the government might require that any product that is sold as part of the investment-based Social Security reform must include at least some such market-based guarantee. Our analysis calculates some of the tradeoffs that could be provided in today's financial markets. We show that it is feasible to protect future benefits equal to those projected in current law with a combination of the current payroll tax rate and Personal Retirement Account savings equal to 2.5 percent of covered earnings. Raising the savings rate to 3.0 percent increases substantially the amount of the return that the individual can keep, raising it to 145 percent of the currently projected level of benefits. Reducing the guarantee level to 90 percent of the projected future benefits would increase this upside potential to 150 percent of the currently projected level of benefits with a 2.5 percent saving rate and 195 percent of the currently projected benefits with a 3.0 percent saving rate.

This paper, a forthcoming chapter in the Handbook of Public Economics, reviews the theoretical and empirical issues dealing with Social Security pensions. The first part of the paper discusses pure pay-as-you-go plans. It considers the effects of introducing such a plan on the present value of consumption, the optimal level of benefits in such plans, and the emprical research on the effects of pay-as-you-go pension systems on labor supply and saving. The second part of the paper discusses the transition to investment-based systems, analyzing the effect on the present value of consumption of such a transition and considering such issues as the distributional effects and risk associated with such systems.

Social Security Policy in a Changing Environment analyzes the changing economic and demographic environment in which social insurance programs that benefit elderly households will operate. It also explores how these ongoing trends will affect future beneficiaries, under both the current social security program and potential reform options. In this volume, an esteemed group of economists probes the challenge posed to Social Security by an aging population. The researchers examine trends in private sector retirement saving and health care costs, as well as the uncertain nature of future demographic, economic, and social trends—including marriage and divorce rates and female participation in the labor force. Recognizing the ambiguity of the environment in which the Social Security system must operate and evolve, this landmark book explores factors that policymakers must consider in designing policies that are resilient enough to survive in an economically and demographically uncertain society.

Social Security in the United States and in Europe is at a critical juncture. Through the essays assembled in Social Security Pension Reform in Europe, Martin Feldstein and Horst Siebert, along with a number of distinguished contributors, discuss the challenges facing Social Security reform in the aging societies of Europe. A remarkable range of European nations—Germany, France, Finland, the Netherlands, Poland, Romania, Italy, Sweden, the United Kingdom, and Hungary—have implemented or are about to implement mixed Social Security systems that combine a traditional defined benefit of the pay-as-you-go system with an individual retirement account defined contribution of a capital-funded system. The essays here highlight the problems that the European pension reform process faces and how it differs from that of the United States. This timely volume will significantly enrich the debate on pension reform worldwide.