When you leave an employer and transition into retirement, you have some options for your 401(k) savings. This guide explains what those options may be and why specific options may be better than others. Your situation is unique, so this is definitely not a case of one size fits all. Only by understanding your options can you make an informed choice. The handbook also compares traditional and Roth IRAs, and notes early withdrawal and RMD rules that pertain to younger and older retirees.