Population Aging and the Macroeconomy: Explorations in the Use of Immigration as an Instrument of Control

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.