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Why did Lester Pearson allow Quebec to opt out of some federal programs?

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Liberal Party of Canada Reproduction of Canadian Prime Minister John Macdonald's office.

Lester B. Pearson allowed Quebec to opt out of certain federal programs as a strategic response to the rising tide of nationalism and the "Quiet Revolution" occurring in the province during the 1960s.12

During this period, the Quebec government, led by Jean Lesage, adopted a "maîtres chez nous" ("masters in our own house") philosophy, which sought greater provincial control over social, economic, and cultural affairs. To address these tensions and manage federal-provincial relations, Pearson’s government permitted Quebec to withdraw from approximately 30 joint cost-sharing programs—including those related to health care and pensions—in exchange for fiscal compensation.1

This arrangement allowed Quebec to establish and administer its own parallel institutions, such as the Quebec Pension Plan, while remaining within the Canadian Confederation. By providing this flexibility, the Pearson administration aimed to accommodate Quebec's desire for autonomy and mitigate the influence of separatist-oriented political movements.13