HKS Faculty Research Working Paper Series
HKS Working Paper No. RWP11-013
February 2011
Abstract
We describe the pension plan features of the states and the largest cities and counties in the U.S. Unlike
in the private sector, defined benefit (DB) pensions are still the norm in the public sector. However,
a few jurisdictions have shifted towards defined contribution (DC) plans as their primary savings plan,
and fiscal pressures are likely to generate more movement in this direction. Holding fixed a public
employee‘s work and salary history, we show that DB retirement income replacement ratios vary greatly
across jurisdictions. This creates large variation in workers‘ need to save for retirement in other accounts.
There is also substantial heterogeneity across jurisdictions in the savings generated in primary DC
plans because of differences in the level of mandatory employer and employee contributions. One
notable difference between public and private sector DC plans is that public sector primary DC plans
are characterized by required employee or employer contributions (or both), whereas private sector
plans largely feature voluntary employee contributions that are supplemented by an employer match.
We conclude by applying lessons from savings behavior in private sector savings plans to the design
of public sector plans.
Citation
Beshears, John, James J. Choi, David Laibson, and Brigitte C. Madrian. "Behavioral Economics Perspectives on Public Sector Pension Plans." HKS Faculty Research Working Paper Series RWP11-013, February 2011.