This article was originally published in [Month Year] and has been updated in [Month Year] to reflect current information.
In the more than 90 years since the Social Security Act established a new means for Americans to prepare for life after their working days, the retirement landscape has changed significantly. There has been a dramatic reduction in defined-benefit pension plans and a migration toward defined-contribution plans like the 401(k). Life expectancies are longer and the full retirement age has crept higher.

