This article makes an in-depth critique of the type of methodology adopted by the International Labor Organization in its report on “Actuarial Evaluation of the Panamanian Pension System”, in order to project the growth rate of the Real Gross Domestic Product, the role that It includes technological change, as well as establishing the growth rate of labor productivity over time. These elements are central to calculating the evolution of macroeconomic indicators GDP, employment and unit wages. This means that the validity of economic assumptions depends fundamentally on the method used to make these economic assumptions; They are very important since subsequent recommendations regarding Social Security are derived from their results.