actuary
noun [ C ]
uk/ˈæktjuəri/ us/-eri/ plural actuariesa person whose job is to calculate risk for insurance companies and pension funds, especially the age to which people are expected to live. The companies and funds use the results to make certain that they always have enough money to make payments to the people who have a right to them:
Actuaries and auditors have a statutory duty to report anything that exposes the assets of a pension scheme to risk.