Piven is known equally for her contributions to social theory and for her social activism. A veteran of the war on poverty and subsequent welfare-rights protests both in New York City and on the national stage, she has been instrumental in formulating the theoretical underpinnings of those movements. Over the course of her career, she has served on the boards of the ACLU and the Democratic Socialists of America, and has also held offices in several professional associations, including the American Political Science Association and the Society for the Study of Social Problems. Previously, she had been a member of the political science faculty at Boston University.