Maximizing Social Security Benefits
by Stephen May
Although it's unwise to expect Social Security to cover all your costs, you can take steps to increase your benefits. Work as long as possible. You can start collecting Social Security at age 62, but your benefits may be reduced by 20 percent. If, on the other hand, you work until age 70 you'll receive even more.
Source: http://www.investorguide.com/igu-article-741-retirement-basics-retirement-myths.html