What are the 10 biggest mistakes feds make when planning for retirement? Ed Zurndorfer is a registered employee benefit consultant. He's come up with a list. Last time we spoke with Ed, we discussed mistakes 1 and 2. Today, we look at a few more:

Mistake #3: Failure to fill out and if necessary, update beneficiary designations.

Mistake #4: Failure to understand the rules for maintaining federal health insurance (FEHB) during retirement.