Its done by the Census, the SSA doesn't track it that I noticed: http://money.usnews.com/money/retirement/articles/2013/02/11/why-more-americans-are-working-pa

Its done by the Census, the SSA doesn't track it that I noticed: http://money.usnews.com/money/retirement/articles/2013/02/11/why-more-americans-are-working-past-age-65 http://money.usnews.com/money/retirement/articles/2013/02/11... Turning 65 is no guarantee that you will be ready or willing to retire. A rapidly growing number of Americans are continuing to work beyond their 65th birthday. The proportion of people age 65 and older in the workforce grew to 16.1 percent by 2010, up from 12.1 percent in 1990, according to a recent Census Bureau report. And the percentage of people between ages 65 and 69 who are working grew 9 percentage points to 30.8 percent in 2010. Its still age 65 for the people who have hit age 65 so that is close enough I think?