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Susan Day

Senior Economist

I always appreciate when our government clients ask us to help them quantify the benefits and costs of actions they are considering. The more complex assignments, such as accurately characterizing behavioral changes under multiple compliance scenarios, put a premium on our creativity and experience.


Susan Day specializes in analyzing the value of providing information on environmental releases of toxic chemicals to society and the burden on industry of providing such information. Over her 30-year career, she has analyzed the economic and regulatory impacts of toxic chemical regulations under the Emergency Planning and Community Right-to-Know Act and the Toxic Substances Control Act. In this work, Susan profiles industries and chemicals, estimates compliance burden and costs, estimates financial impacts on small businesses, and characterizes the benefits of regulation. More recently, she has expanded her economic and regulatory expertise to supporting worker health and safety standards for the Occupational Safety and Health Administration.

Susan holds a B.A. in economics from Colby College and an M.S. in resource economics from the University of Rhode Island. In her spare time, she can be found either at an ice rink watching her daughter play hockey or at a baseball field watching her son pitch.