Williams clerked for
Spottswood William Robinson III in 1973–1974, and for
Thurgood Marshall in 1974–1975. Hastie Williams was chief counsel of the
United States Senate Committee on the Budget from 1977 to 1980, and administrator for Federal Procurement Policy in the
United States Office of Management and Budget from 1980 to 1981, under President
Jimmy Carter. She served on the
Internal Revenue Service Oversight Board from 2000 to 2003, under President
George W. Bush. In the 1980's, Williams helped victims of terrorism to sue countries which sponsored terrorist groups. She is credited with assisting the American journalist
Terry Anderson to achieve compensation from the Iranian government, after he was kidnapped in Beirut, Lebanon, and held for over four years by Hezbollah militants. Hastie Williams was on the board of directors of
Chubb Limited from 2000 to 2010, and
SunTrust Banks from 2002 to 2011. She was also on the boards of
Crestar Bank and the
Gannett Company. ==Philanthropy==