Variable labour supply, specialisation-based external economies, and capital inflow

This paper examines the impact of exogenous capital inflow on prices, production, labour supply, and welfare in the presence of specialisation-based externalities. The paper utilises a simple model of an economy that produces one-final good by means of capital, labour, and a large number of varieties of an intermediate good. The intermediate good is produced by means of capital and labour. The supply of capital is exogenous but the supply of labour is endogenous. The presence of internal economies of scale in the intermediate good industry gives rise to specialisation-based external economies in the production of the final good. Perfect competition prevails in the final good industry whereas the intermediate good industry operates under Chamberlinian monopolistic competition. It is shown that exogenous capital inflow decreases labour supply and increases welfare only if the elasticity of substitution between leisure and the final good is equal to or less than unity. The paper also shows that, if trade opens up between two otherwise similar economies, a capital rich country would be a net importer of varieties of the intermediate good.     

International Factor Mobility, Government Size and Welfare

An examination of the available data reveals that the size of government varies considerably across time and countries. By making use of a simple general equilibrium model, this paper demonstrates that size of government is affected by the availability of capital and labour within an economy. Specifically, this paper utilises a model of a closed economy that produces one-private and one-public good. Both goods are produced by means of capital and labour. Production functions are subject to constant returns to scale and perfect competition prevails in all markets. The elasticity of substitution between the public and the private good is greater than unity and there is no international factor mobility in the initial equilibrium. The size of government is measured by total spending on the public good as a proportion of the total expenditure on the private and public goods. It is shown that capital (labour) inflow can decrease (increase) the size of government. Capital inflow increases welfare if the private good is relatively capital intensive whereas labour inflow increases welfare if the public good is relatively capital intensive.     

On the Effects of Wage Pressure on the Unemployment Rate and Capital Share

Abstract. The purpose of this paper is to understand the behaviour of the capital share and the unemployment rate in Europe over the past quarter of a century. We consider a model with monopolistic competition, increasing returns and an imperfect labour market, assuming that the elasticity between capital and labour is less than unity. Previous works have generally assumed constant returns to scale. Our results offer an important conclusion, namely that increased wage pressure will increase the unemployment rate and the capital share even though the latter initially decreases, which fits the stylized facts about the studied economies.     

Unemployment and welfare consequences of international outsourcing under monopolistic competition

This paper challenges the conventional academic view that international outsourcing is just another form of gainful trade. Contrary to that view, we show that labour‐service outsourcing can reduce the high‐wage country's welfare even when product‐market trade is beneficial, within a model that combines involuntary unemployment and monopolistic competition. Outsourcing's impact on welfare is worsened by a definite loss of jobs and a possible contraction in the range of varieties produced worldwide. While owners of capital benefit from outsourcing under certain conditions, labour's welfare always falls.     

Unemployment, wage bargaining and capital-labour substitution

Many economists believe that capital accumulation, technicalprogress and labour force expansion have no lasting effect onunemployment. This view rests on the empirically doubtful assumptionthat the elasticity of substitution between labour and capitalis equal to unity (i.e., production is Cobb-Douglas). Usinga simple model based on the work of Layard, Nickell and Jackman,this paper demonstrates that, with a lower elasticity of substitution,the equilibrium unemployment rate is affected by all of theabove factors. It considers briefly how capital accumulationmay be endogenised and what long-run implications this has forunemployment.     

Foreign Capital, Urban Unemployment, and Economic Growth

A three-sector endogenous growth model, is used to study the effects of foreign direct investment (FDI) on the dynamics of urban unemployment, labour income, and capital income as well as national welfare in a Harris–Todaro economy. It is shown that more FDI can affect the economy's dynamics and national welfare positively or negatively. The paper derives conditions as to how the growth rate and welfare effects of FDI relate to the intersectoral mobility of capital, the destination of FDI, the elasticities of substitution, and the factor intensities of the final good production.     

Market Structure and Fiscal Policy Effectiveness

In a monopolistic competition macromodel with endogenous market structure, the fiscal multiplier is shown to consist of two components. The first depicts the response of output to a fiscal expansion through the conventional channels that disregard the role of market imperfections. The second component captures the effects of firms' market power as well as the policy-induced change in market structure. The latter effect—which has not been taken into account in existing studies—is shown to be quite significant in raising the fiscal multiplier (even above unity) and in improving consumers' welfare when the labour market is competitive.     

The positive relation between average labour productivity and labour intensity

Conclusion In this paper an attempt has been made to reconcile the phenomenon of a simultaneous increase in average labour productivity and labour intensity with neo-classical theory. Under certain technical and psychological conditions, this phenomenon can indeed be generated by a neo-classical model, once it has been assumed that production does not only depend on labour and the number of capital goods but on the operating-hours per machine as well. A necessary condition is that the elasticity of substitution is less than unity. Moreover, the elasticity of the degree of overtime aversion with respect to the number of operating-hours per machine has to be negative and smaller in absolute value than the substitution coefficient.Today almost everybody agrees that in reality the elasticity of substitution is less than unity. So, the technical condition may be called realistic. However, it is doubtful whether this is the case with the psychological condition. It seems rather unrealistic that the aversion against overtime work decreases if one has to work at more inconvenient hours.Thus, we may conclude that it is doubtful whether amended neoclassical theory is able to give a realistic explanation of the phenomenon of simultaneously increasing labour intensity and labour productivity. In this respect approaches which discern the phenomenon of labour hoarding [5] or employ U-shaped short-run cost curves [2], may be more promising.I wish to thank Professors F. Hartog, F. J. de Jong, and G. F. Pikkemaat, and Mr. J. W. Gunning for making useful comments on a first draft of this paper.     

Increased Input Supplies,Government Size,Welfare and Trade in the Presence of Increasing Returns

This paper examines the impact of exogenous changes in the supply of primary factors of production on the relative size of government and welfare in the context of a model where increasing returns are present in the production of an intermediate good. It is shown that an increase in the supply of labor (capital) increases the relative size of government if the share of labor is large (small) in the public sector as compared to the private sector. An increase in the supply of capital increases welfare but the impact of an increase in the supply of labor cannot be unambiguously determined. In the context of a North-South model, the paper also considers the pattern of trade. It is shown that North will export capital-intensive intermediate goods to the South. Received September 13, 2001; revised version received June 1, 2002 Published online: February 17, 2003 I am indebted to Professor Bob Catley and two anonymous referees for invaluable comments and suggestions. However, responsibility of any remaining errors or omissions is mine alone.     

Labour mobility and wage inequality in the presence of endogenous foreign investment

This paper examines the impact of labour mobility and increased competition on skilled–unskilled wage inequality and foreign investment. Unlike the existing literature this paper considers a model where foreign investment is endogenously determined. The paper shows that in the shortrun, inflow of either skilled or unskilled labour has no effect on wage inequality but increased competition increases wage inequality. Inflow of either type of labour increases foreign investment but the impact of increased competition on foreign investment cannot be unambiguously determined. Inflow of skilled labour increases wage inequality in the longrun and its effect on foreign investment is positive. Increased competition in the longrun increases wage inequality, foreign investment and welfare.     

The incidence of heterogeneous residential property taxes

In an economy with multiple tax jurisdictions, the distribution of the burden of heterogeneous residential property taxes is shown to depend on the elasticity of demand for housing, the elasticity of substitution between land and capital in housing production, the elasticity of supply of land to individual tax jurisdictions, and the degree of population mobility between tax jurisdictions. It is demonstrated that the excise effects of the residential property tax may not cancel across jurisdictions and the average rate of tax may overstate or understate the burden on residential capital.     

Unemployment, Factor Substitution and Capital Formation

Abstract. We incorporate a wage-bargaining structure in a dynamic general equilibrium model and show how this feature changes short- and long-run properties of equilibria compared with a perfectly competitive setting. We discuss how employment, capital and income shares respond to wage-setting shocks and show that adjustment dynamics depend decisively on the magnitude of the elasticity of substitution between labour and capital. Values of the elasticity below unity add persistence, tend to preserve stability and lead to empirically plausible adjustment patterns. By contrast, values above unity introduce additional volatility, thereby making steady states potentially unstable.     

Capital Expansion, Endogenous Growth and Equilibrium Unemployment

A model is developed, which captures the interactions of unemployment and economic growth in general equilibrium. The economy evolves along a correct-expectations equilibrium path exhibiting endogenous job rationing, and productivity growth is driven by installation of new capital. Under the maintained hypothesis that the elasticity of substitution between capital and labour is less than unity, unemployment benefits are shown to shift up the whole path of equilibrium unemployment, leaving the economy with a higher natural rate of unemployment and lowering the long-run growth rate permanently. Investment tax credits financed by lump sum taxes on total income are capable of lowering the natural rate and raising the economy's growth rate.     

Who gains from capital market integration? Tax competition between unionized and non‐unionized countries

The welfare effects of capital market integration are examined under a model of tax competition with two asymmetric countries. The asymmetry is expressed through the labour market: one country has a perfect labour market whereas the other country's labour market is unionized. Our results indicate that the welfare effects of capital market integration differ depending on whether governments are active or passive in attracting capital. In the absence of active governments, capital market integration benefits the country with a competitive labour market whereas it harms the unionized country. Capital market integration benefits both countries if governments are active and compete for mobile capital using taxes/subsidies.     

Unemployment dynamics with international capital mobility

We study the response of domestic unemployment rates to shocks in total factor productivity for economies with high capital mobility and low labour mobility. We show that high capital mobility amplifies the impact on the domestic unemployment rate of domestic fluctuations in total factor productivity, shortens the lag of the response to shocks and raises the variability of unemployment. But average unemployment is unaffected. Capital flows increase the riskiness of labour income and reduce the riskiness of capital income but do not reduce mean welfare.     

Sunspot Fluctuations in Two-sector Economies with Heterogeneous Agents

We study a two-sector model with heterogeneous agents and borrowing constraint on labor income. We show that the relative capital intensity difference across sectors is crucial for the conditions required to get indeterminacy and endogenous fluctuations. The main result shows that when the consumption good is sufficiently capital intensive, local indeterminacy arises while the elasticities of capital–labor substitution in both sectors are slightly greater than unity and the elasticity of the offer curve is low enough. Locally indeterminate equilibria are thus compatible with a low elasticity of intertemporal substitution in consumption and a low elasticity of the labor supply. As recently shown in empirical analysis, these conditions appear to be in accordance with macroeconomic evidences. We would like to thank R. Becker, J.P. Drugeon and an anonymous referee for useful comments and suggestions. The current version also benefited from a presentation at the conference “Public Economic Theory 04”, Beijing, August 2004.     

Land,technical progress and the falling rate of profit

The paper sets out a one sector growth model with a neoclassical production function in land and a capital–labour aggregate. If the elasticity of substitution between land and the capital–labour aggregate is less than one and if the rate of capital augmenting technical progress is strictly positive, then the rate of profit will fall to zero. This result holds regardless of the rate of land augmenting technical progress: no amount of technical advance in agriculture can stop the fall in the rate of profit. The paper also discusses the relation of this result to the classical and Marxist literature.     

Factor mobility and fiscal policy in the EU: policy issues and analytical approaches

Increased integration of labour and capital markets creates significant challenges for the welfare states of modern Europe. Taxation of capital and labour that finances extensive programmes of cash and in-kind redistribution creates incentives for capital owners and workers to locate in regions where they obtain favourable fiscal treatment. Competition among countries for mobile resources constrains their ability to alter the distribution of income and may lead to reductions in the size and scope of redistributive policies. Mobility of labour and capital is imperfect, however. Recent trends indicate that labour and capital are neither perfectly mobile nor perfectly immobile, but rather adjust gradually to market conditions and economic policies. This paper presents an explicitly dynamic analysis showing that governments can achieve some redistribution when it is costly for factors of production to relocate. As the costs of factor mobility fall, however, the effectiveness of redistributive policies is more limited, and governments have weaker incentives to pursue them. Liberalized immigration policies, EU enlargement, and other steps that promote integration of the factors markets of Western Europe with those of surrounding regions thus present a challenge to policy-makers if they also wish to maintain fiscal systems with extensive redistribution.     

Product Differentiation,Competitive Toughness,and Intertemporal Substitution

Standard measures of competitive toughness fail to capture the fact that, as consumers optimize intertemporally, firms operating today compete with (as yet non‐existent) businesses, which will be started tomorrow. We develop a two‐tier constant elasticity of substitution (CES) model of dynamic monopolistic competition in which the impact of product differentiation on the market outcome depends crucially on the elasticity of intertemporal substitution (EIS). The degree of product differentiation per se fails to serve as a meaningful indicator of competitive toughness: what matters is its cross‐effect with EIS. We also extend the model to the case of non‐CES preferences in order to capture variable mark‐ups.     

Regional productivity variation and the impact of public capital stock: an analysis with spatial interaction,with reference to Spain

In this article, we examine whether variations in the level of public capital across Spain's Provinces affected productivity levels over the period 1996 to 2005. The analysis is motivated by contemporary urban economics theory, involving a production function for the competitive sector of the economy (‘industry’) which includes the level of composite services derived from ‘service’ firms under monopolistic competition. The outcome is potentially increasing returns to scale resulting from pecuniary externalities deriving from internal increasing returns in the monopolistic competition sector. We extend the production function by also making (log) labour efficiency a function of (log) total public capital stock and (log) human capital stock, leading to a simple and empirically tractable reduced form linking productivity level to density of employment, human capital and public capital stock. The model is further extended to include technological externalities or spillovers across provinces. Using panel data methodology, we find significant elasticities for total capital stock and for human capital stock, and a significant impact for employment density. The finding that the effect of public capital is significantly different from zero, indicating that it has a direct effect even after controlling for employment density, is contrary to some of the earlier research findings which leave the question of the impact of public capital unresolved.