Joe gets a raise and at 55 he's earning $75,000 a year. By now, he should have $532,500 saved.
How to get there: Start playing catch up. After age 50, you can start contributing more each year to your retirement savings accounts (the cap is lifted). This year you can put an additional $6,000 into your 401(k) -- for a total of $24,500 -- and an additional $1,000 in your IRA accounts -- for a total "catch-up" contribution of $6,500.
This is also a good time to start shifting some of your retirement savings from stocks into less risky assets. At 10 years away from retirement, you should only keep about 70% of your assets in stocks.