Ann Bigué's practice focuses on administrative, constitutional and regulatory law, with an emphasis on matters related to aboriginal law, as well as energy and natural resources law and environmental assessment. Prior to joining Fraser Milner Casgrain LLP, she practised for more than 25 years with other leading law firms in various areas of practice, after acting as Counsel to the National Energy Board in the early years of her career.

Ann is frequently called upon by corporate clients to deal with issues relating to aboriginal and treaty rights in connection with energy and natural resources development projects. She has assumed leadership in complex litigation matters relating to aboriginal rights in the context of important hydroelectric development projects and forestry management activities in Quebec. She has extensive experience in the negotiation of agreements, including impacts and benefits agreements between governments, Aboriginal communities and developers related to the development and implementation of energy, mining and industrial projects in Canada as well as aboriginal issues pertaining to forestry development activities.
 
Ann is named in the 2012 Best Lawyers in Canada directory as a leading lawyer in the areas of aboriginal law, energy regulatory law and natural resources law. She is also listed in The Canadian Legal LEXPERT Directory in the fields of Aboriginal Law and Energy (Electricity). She is also listed in the latest editions of the Women in the Lead Canadian directory. She was awarded the “Advocatus Emeritus” distinction by the Québec Bar in 2009.