Endogenous technological change with leisure-dependent utility

Summary. This paper investigates the effect of introducing leisure-dependent utility into two models of endogenous technological change. Due to the flexibility in the labour supply the dynamics of the models change significantly. It is shown that if agents attach enough value to leisure in comparison to consumption two balanced growth paths may exist. This implies that economies with the same preferences and the same technology may experience different long-run growth rates. Received: October 17, 1997; revised version: January 6, 1999     

Egalitarian wage policies, unemployment and skill-biased technological change

A popular explanation for the rise in European unemployment during the past decades is that relative wages failed to adjust to changes in relative productivities. Many economists reject this hypothesis on the ground that the ratios of low- to high-skill unemployment did not increase. Building on a search model, I argue that relative unemployment rates are affected by skill-neutral, as well as skill-biased shocks; hence stable ratios are theoretically consistent with a mix of skill-biased and skill-neutral shocks. Yet, numerical exercises confirm that wage rigidity in the face of skill-biased shocks probably did not explain much of the European unemployment experience.     

Endogenous growth and income distribution

A theory of endogenous growth is based on an investment possibility function, relating the growth rate of output to the ratio of gross investment to output and the growth rate of employment as formulated originally by M. F. Scott. Consumers maximize an intertemporal utility function and producers maximize the value of the firm. The long-run rate of growth depends on consumer preferences, the exogenous growth of labor supply and the tax rate on output. The functional distribution of income is determined along with the investment ratio in the steady state. Labor market imperfections and real wage inertia induce transition processes, which are relevant for medium term growth.We are indebted to Olivier Blanchard, Casper van Ewijk, Frederick van der Ploeg, Anton van Schaik, Maurice Scott, Jacques Smulders, and two anonymous referees for their valuable comments on an earlier version. Of course, the usual disclaimer applies.     

Endogenous growth through investment-specific technological change

This paper examines a model in which growth takes place through investment-specific technological change, which in turn is determined endogenously through research spending. In particular, the role of the degree of substitutability between research spending and new capital construction is explored. It is shown that the effect of a change in the capital tax rate on the growth rate can depend on the degree of substitutability between research spending and new capital construction. Research subsidies tend to have a larger impact on the growth rate than would an investment tax credit of the same magnitude. Increases in the capital tax rate can increase the growth rate of the economy, even in the absence of externalities. In contrast to the existing literature, the welfare cost of capital taxation in this model can be negligible. There may be multiple tax rates on capital that achieve the same growth rate. It is demonstrated that in the presence of certain types of positive externalities, the optimal growth rate can be attained through the use of capital taxes—rather than subsidies.     

Growing income inequality due to biased technological change

Inequality is rising in many countries. This paper presents a growth model in which technological change increases the income share of reproducible factors at the expense of non-reproducible ones. Agents are heterogeneous in wealth. Preferences imply that the saving rate increases with wealth. Consequently, assets (reproducible factor) are less equally distributed than raw labor (non-reproducible factor). This implies that technological change raises the share of the less equally distributed factor, increasing inequality along permanent growth path. When reproducible factors and the state of know-how are low, to adopt new technologies is not profitable, learning-by-doing and technological change ceases, arising stagnation.     

Endogenous technological change: a note on stability

Summary. This paper demonstrates that the steady-state solution of the optimal-growth problem in Romer's (1990) model of endogenous technological change is globally saddle-point stable. Surprisingly, the proof of this result is trivial. Interest in the optimal growth path is justified by the fact that there is a (unique) combination of production and R&D subsidies by means of which the optimal growth path is attained as a market equilibrium. Received: October 6, 1998; revised version: April 19, 1999     

Corporate profit tax,firm entry with unemployment,and income inequality

In this paper, we provide a general equilibrium analysis of corporate profit tax on income distribution, unemployment, and wage inequality. With firm dynamics in industrial sector, we identify a new channel through which profit tax affects income and wage inequality: profit tax cut will widen not only the wage gap between skilled and unskilled labor, but also exacerbate the wage inequality of unskilled labor among different sectors. The welfare effect of profit tax cut depends on unemployment deepening (labor-distortion effect) and more manufacturing firms enter the market (business-creation effect), eroding the market share of incumbent firms (business-stealing effect).     

Basic income and the labour market: Labour supply,precarious work and technological change

In this paper, I examine the relationship between a basic income as a policy tool and the functioning of the labour market. I focus on three key areas where a basic income has been hypothesized to relate to labour markets: (i) through altering work decisions, (ii) as a response to predicted changes in work arising from technological change and (iii) as backstop that would allow workers to demand better working conditions and higher wages. I provide answers on the role or impact of a basic income in each area in the context of the current Canadian labour market. But a key focus in the paper is on the ways we could alter our labour market models to provide a better basis for debating the impacts of policies like a basic income in the context of a goal of moving toward a more just society.     

Technological learning,technological substitution,and technological change

From a simple dynamic model of competition between product lines it is shown that the shape of learning curves has a powerful influence on the dynamics of technological substitution. Learning of both production efficiency and marketing efficiency is considered. It is asserted that both types of learning are important and that the two are complementary. It is further speculated that production learning is probably more important for commodities and in situations of low per capita income, whereas market learning gains ascendancy in cases of high income and specialized and diversified product lines. In closing, it is noted that simple competitive models are misleading, first because complementarities and coevolutionary processes are probably as important in the overall development of technology as are competitive processes, and second because optimization of the technological system's parts does not guarantee improvement of the performance of the system as a whole.     

A model of income,unemployment and inflation for the USA

A simple three equation macroeconomic model is developed to explain the dynamics of output, umemployment and inflation for the USA. The model is estimated, with the annual data, for 1946–1989. Insights gained through some recent developments are used to specify and estimate the model.     

Economic growth,structural change,and search unemployment

Economic growth is driven by structural change. Structural change does not come without a cost. The most evident social cost of structural change is high and persistent unemployment. This paper develops a model with an endogenously expanding service sector, where the constant flow of workers in and out of employment leads to structural unemployment. The main finding is that the level of unemployment is different between the initial period and the long-run equilibrium growth path, and that along the transition path, the level of unemployment will overshoot its equilibrium level, which can explain the long-run pattern of unemployment in most industrialized countries.      

Profit rate dynamics, income distribution, structural and technical change in Denmark, Finland and Italy

Under less restrictive assumptions than in previous contributions, this paper highlights various patterns of profit rate dynamics that are common to the countries under scrutiny. Without a substantial re-distribution of income in favour of profits, the profit rate declines. When labour productivity is weak the profits/wages ratio declines leading to a decline in the profit rate, also due to capital deepening. Developments in the capital-labour ratio tend to increase the organic composition of capital while those in the ratio between the capital price deflator and the average wage tend to decrease it. Falls in the profit rate took place in countries with a weak technological change with episodes of Marxian bias. Employment shifted from low to high capital intensity sectors, from low to high organic composition industries and from low to high productivity sectors. Rising strength of labour and realization failures tend to have a greater role than rising organic composition in cyclical profit rate dynamics. Over the cycle, the first mechanism is also the first one to show up, while the others tend to follow it. Theoretical and policy implications are offered.     

A comparison of unemployment, income and mortality interaction for five European countries

The relationship between unemployment and health status is examined in a comparative study of five European countries using a time series model. "The hypothesis considered in this paper is that the secular decline in mortality rates can be attributed to the secular rise in real per capita income and that the remaining fluctuations in mortality rates can be explained by cyclical movements in income and variations in unemployment." The data concern the Federal Republic of Germany, France, Italy, Sweden, and Ireland.     

Energy conservation, unemployment and the direction of technical change

This paper extends the model by Smulders and de Nooij (Resour Energy Econ 25:59–79, 2003), where technical change can be biased towards labour or energy, by assuming a monopolistic union and a government which pays unemployment benefits, collects wage taxes and sells emission permits. The extended model is applied to the analysis of environmental tax reforms. A reduction in the level of energy use yields a double dividend by lowering pollution and unemployment, while temporarily inducing energy-saving technical change. It moves the economy to a new balanced growth path where unemployment is permanently lower, but long-run growth is not affected. A reduction in the growth rate of energy use induces a persistent bias in technical change towards labour and reduces long-run growth.     

Corporate governance,environmental regulations,and technological change

This paper investigates the relationship between environmental regulations and innovation by focusing on the automobile industry in a cross-country setting. We provide empirical evidence that the presence of agency problems mitigates the negative effects of environmental regulations on overall R&D activity, which leads to full compensation when the degree of agency problems is sufficiently high. Guiding our empirical analysis, we provide a general model consistent with the structure of existing ownership data. Specifically, we model ownership structure as a combination of two extreme corporate governance types. On the one extreme there are profit maximizers, and on the other extreme there are managers who are only concerned with their private benefits. The model leads to a simple country level ownership indicator and shows that if an economy is dominated by firms with higher agency problems, then pollution tax might even increase overall R&D, while reducing pollution. According to our estimations, such an outcome is possible only for out-of-sample values of the ownership indicator, where the degree of agency problems is extremely high.     

Evolution,complex systems and technological change 1

A particularly weak area of mainstream economics is its theoretical capacity to handle structural economic change. And yet the advent of major new technologies, combined with the growing integration of the international economic system, has placed structural change high on the policy agenda. This paper suggests an alternative theoretical approach. By portraying economic systems as complex open systems it is possible to view their long-term evolution in a more realistic way. However, in order to do this it is also necessary to borrow from other disciplines such as biology, physics and computer science where research of a similar genre has been carried out. The paper explores what this means for our understanding of many of the underlying concepts associated with technological change and ends with a programmatic plea to broaden the disciplinary bounds of economics.     

The Weibull distribution as a general model for forecasting technological change

This paper presents a simple and widely applicable model for technological forecasting using the Weibull distribution function. It shows the generality of the Weibull function, which can accommodate different patterns of technological change. A method for estimating parameters and some applications are presented to illustrate the usefulness of the model.