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A dynamic model of the evolution of health for those over the age of 50 is embedded in a structural, econometric model of retirement and saving. Effects of smoking, obesity, alcohol consumption, depression, and other proclivities on medical conditions are analyzed, including hypertension, diabetes, cancer, lung disease, heart problems, stroke, psychiatric problems, and arthritis. Compared to a population in good health, the current health of the population reduces retirement age by about one year. Including detailed health dynamics in a retirement model does not influence estimates of the marginal effects of economic incentives on retirement.

This paper examines the formation of pension plans from a corporate finance perspective. The theoretical underpinnings for selecting a defined‐benefit or defined‐contribution plan are discussed and used to form empirically testable hypotheses. Linear probability and logit models are used to identify corporate financial characteristics that affect the likelihood of forming a defined‐benefit or defined‐contribution plan. The results strongly indicate that firms with high degrees of debt and intangible assets are least likely to form defined‐benefit plans in a post‐reversion situation, while firm size enhances the probability of forming defined‐benefit plans. The growth in private retirement plans over the past quarter century has made pension fund management a critical concern for many financial managers. The total amount of assets in private pension plans amounted to approximately $150 billion in 1970, while this figure was about $2 trillion in 1989. A corresponding trend to this growth has been an acceleration in the formation of defined‐contribution plans relative to defined‐benefit plans. In 1975 about 29 percent of all plans were defined‐contribution plans, and 71 percent were defined‐benefit plans. In contrast, defined‐contribution plans comprised 55 percent of all plans in 1988, while 45 percent were defined‐benefit plans.1 Gustman and Steinmeier (1987) suggest that the shift to defined‐contribution plans in recent years may be attributable to shifts in jobs in the economy away from the manufacturing sector and toward the service sector. Furthermore, the role of unions, firm size, and administrative costs have also been sighted as factors which partially explain the economy wide shift toward defined‐contribution plans (see Gustman and Steinmeier (1989), Clark and McDermed (1990), and Kruse (1991)). In this paper, we address the pension choice by examining the formation of individual plans from a corporate finance perspective. Specifically, we examine the pension choice issue when firms are faced with making this decision after the termination of an overfunded defined‐benefit plan. The remainder of this paper is organized as follows. Section I discusses the possible motives for selecting one plan over the other, and develops testable hypotheses. The data and methodology are discussed in section II, while section III presents the empirical results. Section IV summarizes and concludes the paper.

This paper advances the specification and estimation of econometric models of retirement and saving in two earner families. The complications introduced by the interaction of retirement decisions by husbands and wives have led researchers to adopt a number of simplifications. Our analysis relaxes these restrictions. The model includes three labor market states, full-time work, partial retirement, and full retirement; reverse flows from states of lesser to greater work; an extended choice set created when spouses make independent retirement decisions; heterogeneity in time preference; varying taste parameters for full-time and part-time work; and the possibility of changes in preferences after retirement.

Using data from the Health and Retirement Study, we examine behavioral responses to a new generation of retirement policies that on average are actuarially neutral. Although many conventional models predict that actuarially neutral policies will not affect retirement behavior, our model allows those with high-time preference rates to find that the promise of an actuarially fair increase in future rewards does not balance the loss from foregone current benefits. Thus together with liquidity constraints facing those with high-time preference, we find that actuarially neutral policies do affect retirement behavior. One such policy follows on the elimination of the Social Security earnings test for those over normal retirement age, and would eliminate the earnings test between early and normal retirement age. Another of these policies would increase the ages of benefit entitlement. Still another such policy emerges from a central focus of the past few years on the adoption of personal accounts. Although Social Security benefits are currently paid in the form of an annuity, benefits from either defined benefit plans or from personal accounts may be made available as an annuity or as a lump sum of equivalent actuarial value. A related policy choice between actuarially equivalent benefits emerges on the pension side. There has been discussion of relaxing the current IRS prohibition against paying a pension benefit when a person remains at work, instead allowing partial pension benefits to be paid to those who partially retire on a job.