This article examines the validity of a gains from trade proposition in a world in which the direction of technological change is determined endogenously. We first give an extreme example in which a part of the world that would smoothly develop under autarchy forever remains underdeveloped under...

We develop an overlapping--generations model that highlights the interaction between an unfunded pension system and an unemployment insurance in the presence of a labor market with union wage setting. The social security system is financed by proportional wage taxes levied on firms and their...

We add an extractive sector to an endogenous growth model of expanding varieties and directed technological change. Extractive rms reduce the stock of non-renewable resources through extraction, but also increase the stock through R&D investment in extraction technology. Our model replicates...

In this paper we investigate the possibilities of Pareto-improving reforms of a pay-as-you-go (PAYG) pension system in a framework of endogenous growth. Belan et al. (1996) propose a transition of a PAYG system to a system of savings--subsidization. We follow this approach and prove that a...

The interaction of social security (based on the two pillars unemployment insurance and public pension system), unemployment, and economic growth is considered in an overlapping generations model with endogenous growth and efficiency wages. The impact of each worker's and employer's social...

This article studies the long-run direction of technological change in an endogenous growth model. Development is modeled as a sequence of temporary equilibria in an overlapping generations framework. We introduce a concept of `long-run efficient development' which excludes persistent...

This paper explores the impact of insatiable needs on the sustainability and the direction of technological change and economic growth. In a simple framework it is shown that growth can only be sustained if either the opportunity costs of research are small at low levels of research or if some...

We introduce a framework of development in which the direction of change is determined endogenously. Which new products, which new qualities and which new techniques are introduced in the course of development is determined by the profitability of different potential innovations. We define a...