Leadership Profile

Louis Gagnon

President, US & Canada

Louis Gagnon is President, US & Canada, leading more than 5,000 colleagues who serve approximately 10,000 domestic and multinational clients across Mercer. He has served in this role since 2018 and is based in New York.


In his more than 30 years at Mercer, Louis has held numerous leadership roles across the business and has a proven track record of driving innovation, building client relationships, inspiring teams and enhancing Mercer’s diverse workforce and inclusive culture. Leading with his heart, Louis is known for his steadfast internal and external advocacy of Mercer’s mission to make a difference in people’s lives, particularly taking the lead in driving social impact in local community service and philanthropy.


Louis joined Mercer in 1988 as a retirement consultant in Canada. In 1996, he moved to Mercer’s US business, where he held leadership, sales and innovation roles before becoming Canada’s CEO in 2015.


Louis graduated from Concordia University in Montreal with a Bachelor of Science in mathematics, statistics and actuarial science. He is a Fellow of the Society of Actuaries and of the Canadian Institute of Actuaries.