From its inception in 1875, the Superintendent of Insurance employed a number of actuaries, who are mathematicians devoted to calculating the probabilities of certain things happening. Their importance to the government was amplified when old age pensions were introduced in 1926. The government needed to know the number of old people expected to live or die every year, so they could budget for the pensions.
In 1926, the Superintendent of Insurance appointed a Chief Actuary to serve under him. The Chief Actuary of Canada still exists as an autonomous arm of the Office of the Superintendent of Financial Institutions in the Department of Finance.
The Chief Actuaries of Canada have been:
Andrew Daniel Watson, 1926-56.
E.E. Clarke, 1956-70.
Walter Riese, 1970-89.
George W. Poznanski, 1989-92.
Bernard Dussault, 1992-99.
Jean-Claude Ménard, 1999-now.