Walker studies debt collection processes, financial markets, and court systems. His dissertation identifies foreclosure litigation as a critical link between the structure of mortgage markets and everyday people’s lived experience of precarity. He examines how financialization has changed the social organization of debt collection, how financial sector actors have worked to undermine borrowers’ legal protections, and how judges manage conflicts between aggressive collections practices, the rule of law, and courts’ own budget constraints. Walker received his JD-PhD from the University of Wisconsin and is currently a postdoctoral researcher at the University of Buffalo’s Baldy Center for Law and Social Policy.