NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Changing Progressivity as a Means of Risk Protection in Investment-Based Social Security

Andrew A. Samwick

NBER Working Paper No. 13059
Issued in April 2007

---- Acknowledgements -----

I thank Mike Hurd and conference participants at the NBER Program on Aging's 2006 Conference on Retirement Research for helpful comments. This research was supported by the U.S. Social Security Administration through grant #10-P-98363-1-03 to the National Bureau of Economic Research as part of the SSA Retirement Research Consortium. The findings and conclusions expressed are solely those of the author and do not represent the views of SSA, any agency of the Federal Government, or the NBER. Any errors are my own.

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