She worked for the Office of Strategic Services during World War II, where she was a research analyst in charge of the Swiss desk.
In that role, she presided over antirust and cartel cases, serving as chief counsel for United States v. Watchmakers of Switzerland Information Center, Inc.(1955).
[3] On September 28, 1964, Jones was named by President Lyndon B. Johnson to serve on the Federal Trade Commission (FTC),[4] initially through a recess appointment and subsequently through a Senate confirmation.
[1] A liberal Republican during her time on the FTC,[9] Jones became a member of the Democratic Party later in life.
[10] In the book, she discusses the difficulty of breaking into the legal professional in the 1940s, during a time when few female graduates were offered roles as practicing attorneys.