Was your distribution from a Simple IRA or a SEP IRA? Those are both employer sponsored retirement plans. If you're not familiar with them, the answer is probably no. More than likely you need to check "None of these apply" and if the IRA/SEP/Simple box on your 1099-R is checked, you should check it. That doesn't mean it's SEP IRA or Simple IRA, as it applies to Traditional IRAs as well - which is probably what you have.
