在她职业生涯的第一年左右，沃伦并没有在律师事务所积极执业，而是在公立学校教授残疾儿童。她还在家做了一些小的法律工作，如遗嘱和房地产申请。沃伦于1977年回到母校，担任罗格斯大学的讲师。她在那里呆了一个学年，然后回到德克萨斯州，在休斯顿大学法律中心找工作，在那里她从1978年到1983年担任学术事务的副院长。 1981年，她在德克萨斯大学法学院担任访问副教授;她从1983年回到1987年担任正教授。从她的职业生涯开始，沃伦经常关注她的工作和研究，以了解真实的人如何在日常生活中与法律互动，特别强调破产法。她的研究使她在自己的领域成为一名受人尊敬的后起之秀，并在整个20世纪80年代和90年代继续她的工作。 1987年，Warren于1987年加入宾夕法尼亚大学法学院担任正教授，并于1990年成为William A. Schnader商法律教授。她于1992年在哈佛大学法学院任教一年，担任Robert Braucher商业法客座教授。
In the first year of her career, Warren did not practice actively in law firms, but taught disabled children in public schools. She also did some small legal work at home, such as wills and real estate applications. Warren returned to his alma mater in 1977 as a lecturer at Rutgers University. She stayed there for a school year, then returned to Texas to find a job at the University of Houston Law Center, where she served as an associate dean of academic affairs from 1978 to 1983. In 1981, she served as an associate professor at the University of Texas Law School; she returned to 1987 as a full professor from 1983. Since her career, Warren has been paying attention to her work and research to understand how real people interact with the law in their daily lives, with particular emphasis on bankruptcy. Her research has made her a respected rising star in her field and continued her work throughout the 1980s and 1990s. In 1987, Warren joined the University of Pennsylvania School of Law as a full professor in 1987 and became a professor of law at William A. Schnader in 1990. She taught at Harvard Law School in 1992 for a year as a visiting professor of business law at Robert Braucher.