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Labor Compensation and the Structure of Private Pension Plans: Evidence for Contractual versus Spot Labor Markets

In: Pensions, Labor, and Individual Choice


  • Laurence J. Kotlikoff
  • David A. Wise


Distingiishing "spot" versus "contract" views of the labor market is of critical importance to a host of economic issues ranging from wage flexibility over the business cycle to firm financial valuation. The structural features of U.S. private pension plans permit surprisingly strong inferences concerning the incentive effects of private pension plan provisions and the contractual nature of the U.S. labor market. This paper examines the accrual of vested pension benefits of a nation-wide sample of pension plans. We find strikingly larged is continuities in the profile by age of the ratio of annual accrued pension benefits to the standard wage. These discontinuities primarily occur at the ages of full vesting and early retirement. Representative plans often exhibit absolute changes in accrual ratios of 20 to 30 percentage points at these ages.The provisions of many plans imply large negative accruals after the age of early retirement. Job change typically involves a large loss in pension wealth as well. Since the average worker's marginal product presumably changes smoothly as he or she ages, these pension data can only be reconciled with spotmarket clearing if age wage profiles within a firm exhibit exactly offsetting discontinuities at key ages. Casual inspection of firm wage setting behavior rules out this requirement of spot market clearing. In our view the magnitude,patterns, and variations in pension accrual ratios are strikingly at odds with spot market equilibrium. While market clearing in longer term contracts seems the only equilibrium theory consistent with these findings, it also strains our credulity to ascribe optimizing behavior to the pension accrual profiles chosen by a vast array of U.S. businesses. In the process of presenting these profiles we also consider the following questions concerning U.S. pensions. What are the incentive effects of private pension plans? What is the cost in pension benefits of job turnover? How importan
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  • Laurence J. Kotlikoff & David A. Wise, 1985. "Labor Compensation and the Structure of Private Pension Plans: Evidence for Contractual versus Spot Labor Markets," NBER Chapters, in: Pensions, Labor, and Individual Choice, pages 55-88, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberch:7130

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    References listed on IDEAS

    1. Jeremy I. Bulow, 1979. "Analysis of Pension Funding Under Erisa," NBER Working Papers 0402, National Bureau of Economic Research, Inc.
    2. Laurence J. Kotlikoff & Daniel E. Smith, 1983. "Introduction to "Pensions in the American Economy"," NBER Chapters, in: Pensions in the American Economy, pages 1-19, National Bureau of Economic Research, Inc.
    3. Kotlikoff, Laurence J. & Smith, Daniel E., 1984. "Pensions in the American Economy," National Bureau of Economic Research Books, University of Chicago Press, number 9780226451466, March.
    4. Zvi Bodie & John B. Shoven, 1983. "Financial Aspects of the United States Pension System," NBER Books, National Bureau of Economic Research, Inc, number bodi83-1, May.
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