401(k)s are the best known retirement savings plans. Similar to IRAs, there are traditional and Roth varieties of the 401(k).
If you work for a school, hospital, museum, foundation or other non-profit, tax-exempt employer, you may be offered a 403(b) instead of a 401(k).
If you work for a state or local government, or a non-profit organization, you may be eligible to enroll in a 457 plan.
If you have a 401(k) with a former employer, you have several options on how to invest those assets.