She has received the titles of Fellow from the Order of CPAs, the Institute of Corporate Directors of Canada, and honorary doctorates from eight Canadian universities to recognize her contribution to the business sector and the community.

[6] Before joining Desjardins Group in 2001, Leroux was chief operating officer of Québecor Inc., senior vice-president, finance (head office) and senior vice-president, Quebec operations of RBC (Royal Bank of Canada), and managing partner for the financial services sector at Ernst & Young in Canada.

She was also president of the Ordre des CPA du Québec and governor of the Canadian Institute of Chartered Accountants.

From 2013 to 2017, Leroux also served as a board member and then President of the International Co-operative Alliance (ICA)[7][8] a global organization representing more than 2.5 million businesses, generating more than $3 trillion in sales, in more than 100 countries, and was the first Canadian and North American woman to hold this prestigious position.

[11] Leroux is a Fellow of the Institute of Corporate Directors of Canada (ICD)[12] and an independent member of the boards of Michelin (ML) and chair of its CSR Committee, Bell/BCE[13] and chair of its corporate governance committee, Couche-Tard (ATD)[14] and Lallemand, LHOIST and LG2 global private companies.

She has served as chair of the board of governors of the Société des célébrations du 375e anniversaire de Montréal.

She also co-chaired the annual campaign of Centraide of Greater Montreal in 2014 and chaired the Canada Summer Games in Sherbrooke in 2013.