Yu held the position of alternate executive director first of the bank, then of the fund. His job was to approve loans to member countries, used for postwar reconstruction and economic development in less developed areas, to help raise the living standards of the people.
國華先生擔任的職務是副執行董事，工作性質為貸款給各會員國，解決他們戰後經濟重建和落後地區經濟開發問題，以提高人民生活水準。