Population aging and the macro economy: explorations in the use of immigration as an instrument of control

Frank T. Denton, McMaster University
Byron G. Spencer, McMaster University

Simulation methods are employed to explore the effects of immigration as a control instrument to offset the economic and demographic consequences of low fertility rates and aging population distribution. A neoclassical economic growth model is coupled with a demographic projection model. The combined model is calibrated and used in a series of experiments. The experiments are designed to generate the time paths of a hypothetical but realistic economic-demographic system under alternative assumptions about immigration policy. The government seeks to optimize policy results in the model, according to a specified criterion function. The model is calibrated with Canadian data but some experiments are carried out using initial populations and fertility rates of other countries.