Social Security: By the Numbers Here are five facts about Social Security that might surprise you. Share | Related Content The Long Run: Women and Retirement For women, retirement strategy is a long race. It’s helpful to know the route. Catch-Up Contributions Workers 50+ may make contributions to their qualified retirement plans above the limits imposed on younger workers. Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k).