*Options limited amid tight budgets, Washington gridlock. WASHINGTON, Feb 5- For too many of Vada Lindsey's lower-income clients, their hard-earned 401 accounts become go-to emergency funds when they are faced with unexpected cash needs.
CNBC's Sharon Epperson reports changes in the way IBM contributes to employee retirement accounts may have a wide-ranging impact, and discussing whether volatile markets could place workers in a vulnerable position, with Alison Borland, Aon Hewitt, and Brigitte Madrian, Harvard Kennedy School of Management.