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Abstract:
The purpose of this paper is to introduce a modification of a standard four input production process where energy is used in an inefficient way due to partly unnecessary waste of energy. In this production process, R&D investment is an additional input in order to improve energy efficiency. It closes the gap between energy purchased and energy used effectively. The more is invested, the less is the waste of energy. With the cost and benefit of R&D investment incorporated in our model of the firm, we analyze the impact of an energy tax on R&D effort, on output and on the waste of energy. The model is implemented empirically by choosing a translog cost function and a set of first-order conditions, using data for the German chemical industry, 1970-1995. In a simulation study based on higher energy prices we found outsourcing as the consequent reaction of the firm--more material is used and less of energy, labor, and capital, given the unchanged output level. There is no indication of a double dividend in terms of environmental improvement as well as higher demand for labor on the industry level calling for a computable general equilibrium approach in order to answer this open question.

Abstract:
Division of labor, outsourcing in manufacturing and just-in-time production require the provision of a good and sufficient road infrastructure system. The society is used to mobility, preference for it even increases, and the full benefit of competition can only be realized if special distances can be overcome at low cost of transportation. Since the 1970's, however, the negative aspects of an intensive extension of road infrastructure has dominated the political decision process. The objective of this paper is to model the aspects of bottlenecks in road infrastructure, of congestion costs and of the effect of investment in infrastructure in a computable general equilibrium framework. A long-run business as usual simulation will show how congestion and its cost will develop over time. Given the necessity to act we will raise the fuel tax to partly finance infrastructure investment. We will then compare the cost of the addition in infrastructure with the savings in congestion costs in order to see whether this policy measure is self-financing.

Traffic, congestion, infrastructure, road, computable general equilibrium

Abstract:
Increasing environmental awareness may affect the pleasure of consuming a good for which an environmental friendly substitute is available. When deciding to buy differentiated products, a compromise is sometimes made between preferred characteristics of the good and its environmental properties. In this paper we investigate the market implication of product differentiation when customers are concerned about environmental aspects of the good. We use the spatial duopoly model to determine how environmental concern affects prices, product characteristics and market shares of the competing firms. Our analysis is based on a two-stage game where at the first stage each firm chooses the characteristic of its product. At the second stage each firm chooses its price. The unique equilibrium prices and market shares are affected by consumer awareness of the environment and by the higher costs for producing those goods. As for the Nash equilibria in the characteristics we find three equilibria depending on the parameter constellation. In order to find out whether the market functions in an optimal way we determined the choice of environmental characteristics by a welfare maximizing authority. The result of this analysis is that characteristics differ under private decision making and social one. It can be shown, however, that it is possible to choose environmental policy instruments in order to stimulate private firms to produce the social optimal qualities.

Price competition, Quality competition, Environmental awareness, Environmentally friendly products

Abstract:
The purpose of this paper is to extend the dynamic resource allocation problem by including stock externalities like accumulated CO2 and SO2 emissions as well as flow externalities like waste of energy or pollutants which can be abated (SO2). The objective is to examine how the evolution of energy-, CO2- or SO2-tax rates can address these problems in an optimal way. The concern about the time profile of an energy tax arises from the fact that fossil fuels are an exhaustible resource and that global warming, being a consequence of carbon accumulation in the atmosphere, is a stock externality problem. We use a micro model of a firm, which maximizes profits, uses energy as one of its inputs and is confronted with a varying energy tax. It reacts by substitution, by changing its output level, by investing in energy efficient technology or by purchasing abatement equipment. The government is well aware about firms reaction on price signals. It maximizes a stream of social welfare by choosing an optimal path of its instrument-an energy tax. Our analyses supports the idea of a first rising and later falling tax over time.

Abstract:
The purpose of the paper is to narrow the gap between the widespread use of voluntary agreements and research on the rationale of such approaches. A typical example are voluntary agreements of many industries to reduce carbon dioxide emissions because of global warming. If the industry anticipates that taxes and fees will be introduced in the coming years, it seems rational to act in advance in order to mitigate the tax levels. The conventional approach in strategic trade and tax models was to look at a two-stage game where governments set taxes first and then firms react. In such a policy regime the government is concerned about the international competitiveness of its firms and sets taxes below marginal damages. In this paper, we consider a policy regime with a reversed timing. Firms commit themselves in the face of emission taxes to abatement efforts and to lower levels of the environmentally intensive output. Then the government introduces the tax. Under this timing of strategies the tax is equal to marginal damage. Firms waive profit and reduce output in order to use less of the polluting input. The reward for this behaviour will be a less strict use of policy instruments and hence lower abatement costs in the near future.

Abstract:
Germany has committed itself to reducing its carbon emissions by 25 percent in 2005 as compared to 1990 emission levels. To achieve this goal, the government has recently launched an environmental tax reform which entails a continuous increase in energy taxes in conjunction with a revenue-neutral cut in non-wage labor costs. This policy is supposed to yield a double dividend, reducing both, the problem of global warming and high unemployment rates. In addition to domestic actions, international treaties on climate protection allow for the supplementary use of flexible instruments to exploit cheaper emission reduction possibilities elsewhere. One concrete option for Germany would be to enter joint implementation with developing countries such as India where Germany pays emission reduction abroad rather than meeting its reduction target solely by domestic action. In this paper, we investigate whether an environmental tax reform cum joint implementation (JI) provides employment and overall efficiency gains as compared to an environmental tax reform stand-alone (ETR). We address this question in the framework of a large-scale general equilibrium model for Germany and India where Germany may undertake joint implementation with the Indian electricity sector. Our main finding is that joint implementation offsets adverse effects of carbon emission constraints on the German economy. JI significantly lowers the level of carbon taxes and thus reduces the total costs of abatement as well as negative effects on labor demand. In addition, JI triggers direct investment demand for energy efficient power plants produced in Germany. This provides positive employment effects and additional income for Germany. For India, joint implementation equips its electricity industry with scarce capital goods leading to a more efficient power production with lower electricity prices for the economy and substantial welfare gains.

environmental tax reform, joint implementation, productivity gaps, energy efficiency improvement, computable general equilibrium modeling

Abstract:
The purpose of the paper is to outline an analytical framework which captures the ample scope of locational competition: cost differences, resulting from differences in factor prices including taxes, human capital, infrastructure services and total factor productivity. If cost differences are small, locational competition controls excessive government power. We have modelled locational competition by assuming that governments have a vital interest to keep mobile factors of production at home. We represent this aspect by restricting the usage of environmental instruments such that they will at most exhaust the cost difference to a competing foreign firm. If cost differences are large enough there is no binding restriction for the cost-benefit calculus of a national environmental policy. The tax will be below marginal damage due to strategic reasons of rent shifting. If small international cost differences do not allow taxation in accordance with marginal damage considerations, then locational competition restricts the size of the tax rate such that the firm is indifferent in relocating or staying at home. If no cost differences exist, it is even possible that both governments will subsidise the pollution intensive input in order to make the domestic location attractive.

Government policy, regulatory policies, neoclassical models of trade, international migration

Abstract:
Computable general equilibrium (CGE) modeling has provided a number of important insights about the interplay between environmental tax policy and the pre-existing tax system. In this paper, we emphasize that a labor market policy of recycling tax revenues from an environmental tax to lower employers' non-wage labor cost depends on how the costs of labor are modeled. We propose an approach which combines neoclassical substitutability and fixed factor proportions. Our concept implies a user cost of labor which consists of the market price of labor plus the costs of inputs associated with the employment of a worker. We present simulation results based on a CO2 tax and the recycling of its revenues to reduce the nonwage labor cost. One simulation is based on the market price of labor and the other on the user cost of labor. We found a double dividend under the first approach but not under the second one.

Market-based environmental policy, carbon taxes, double dividend, computable general equilibrium modeling

Abstract:
The objective of our analysis is to find out whether an increase in working time without pay compensation can be considered an adequate policy to reduce unemployment. From the perspective of economic theory, the outcome is in general ambiguous: On the one hand, as the increase in working time raises labor productivity per employee, conditional demand for labor will increase (substitution effect) and conditional demand for intermediate inputs will decline. Since, on the other hand, workers do have a longer working time anyway, no positive effect on the number of persons employed can be expected. However, output of the manufacturing industry, and thus unconditional demand for labor, capital and intermediate goods, will increase (output effect). In order to sell the additional output, firms have to lower prices. Depending on the price elasticities, revenues and hence profits will change. We quantify the employment effects of an economy-wide increase in weekly normal hours in Germany on the basis of a CGE model using an input-output framework for all sectors of the economy. Our simulation results support the argument of the opponents of longer working time that not more jobs will be created. However, when we recycled the higher tax revenues from GDP growth to lower the contribution to social security, then we have been able to support the claim of the proponents that more jobs will be created.

Unemployment, labor market rigidities, longer working hours, computable general equilibrium modelling

Abstract:
No abstract is available for this paper.

Abstract:
Computable general equilibrium (CGE) modeling has provided a number of important insights about the interplay between environmental tax policy and the pre-existing tax system. In this paper, we emphasize that a labor market policy of recycling tax revenues from an environmental tax to lower employers' non-wage labor cost depends on how the costs of labor are modeled. We propose an approach, which combines neoclassical substitutability and fixed factor proportions. Our concept implies a user cost of labor which consists of the market price of labor plus the costs of inputs associated with the employment of a worker. We present simulation results based on a CO2 tax and the recycling of its revenues to reduce the non-wage labor cost. One simulation is based on the market price of labor and the other on the user cost of labor. We found a double dividend under the first approach but not under the second one.

market-based environmental policy, carbon taxes, double dividend, computable general equilibrium modeling

Abstract:
This paper presents an empirical productivity comparison between Japan and Germany, focusing on organization, R&D and infrastructure. Time-series datasets from the auto vehicle and electronic engineering industries are used to demonstrate the reversal in productivity advantage from Germany to Japan at around 1980. It is argued that Japanese productivity gains arose from a better infrastructure and from cost-reducing innovations such as lean production methods. An econometric model determines the causes for the observed differences in the quantities of inputs used. It shows that frequent external procurement in Japanese manufacturing has shifted the factor inputs from labor and capital to materials, a result in line with the philosophy of lean production.