"Paul Krugman: Social Security under attack"

"...it's a lot easier to imagine working until you're 70 if you have a comfortable office job than if you're engaged in manual labor. America is becoming an increasingly unequal society — and the growing disparities extend to matters of life and death. Life expectancy at age 65 has risen a lot at the top of the income distribution, but much less for lower-income workers."
http://www.news-record.com/content/2010/08/16/article/paul_krugman_social_security_under_attack