Risa was fortunate to obtain an internship at the World Trade Organization after completing her Masters of Law. 

Following her internship, she worked at the WTO for two years in the Trade and Environment Division. 

While at the WTO, she organized the  1999 High Level Symposium on Trade and Environment attended by 800 delegates from WTO Member states  produced a major paper on trade measures in Multilateral Environmental Agreements, trained government representatives on WTO rules and decisions and represented WTO at International meetings and conventions.

As counsel for the Ontario Ministry of the Environment, Risa was able to apply her trade law knowledge as the Environment and Sustainable Development lead for the Ontario Delegation for Rounds I to III, Canada-European Union Comprehensive Economic and Trade Agreement (CETA).  She was also part of the team of lawyers that successfully defended Canada against a NAFTA Chapter 11 claim – Gallo v. Canada.