Warren was a professor of law. She taught at the University of Pennsylvania law school, and most recently at Harvard Law School, Warren was among the most named law professors in the studies of commercial law before she began her political career. Warren established the US Consumer Financial Protection Bureau.
She wrote many academic works, and she was the chairperson of the Congressional Oversight Panel, which was created to watch over the Troubled Asset Relief Program. She specialized in bankruptcy law. She became involved with public work in bankruptcy regulation and consumer protection.