environmental policy and international trade when governments and producers act strategically some environmentalists express concern that trade liberalization may damage the environment by giving governments incentives to relax environmental policies to give domestic producers a competitive advantage support for such concern may be given by models of imperfectly competitive trade where there may be rent shifting incentives for governments to relax environmental policies but there are also incentives for producers to act strategically e g through their investment in rd ii allowing governments to act strategically increases the incentive for producers to act strategically iii welfare is lower when both parties act strategically and iv strategic behavior by producers and governments is greater when governments use emission taxes than when they use emission standards

the ir relevance of real wage rigidity in the new keynesian model with search frictions we explore the role of real wage dynamics in a new keynesian business cycle model with search and matching frictions in the labor market both job creation and destruction are endogenous we show that the model generates counterfactual inflation and labor market dynamics in particular it fails to generate a beveridge curve vacancies and unemployment are positively correlated introducing real wage rigidity leads to a negative correlation and increases the magnitude of labor market flows to more realistic values however inflation dynamics are only weakly affected by real wage rigidity this is because of the presence of labor market frictions which generate long run employment relationships the measure of real marginal cost that is relevant for inflation dynamics via the phillips curve contains a dynamic component that does not necessarily move with real wages

technology shocks and labor market dynamics some evidence and theory a positive technology shock may lead to a rise or a fall in per capita hours depending on how hours enter the empirical var model we provide evidence that independent of how hours enter the var a positive technology shock leads to a weak response in nominal wage inflation a modest decline in price inflation and a modest rise in the real wage in the short run and a permanent rise in the long run we then examine the ability of several competing theories to account for this var evidence our preferred model features sticky prices sticky nominal wages and habit formation the same model also does well in accounting for the labor market evidence in the post volcker period

environmental regulations under simple negligence or strict liability we use negligence and strict liability as the basis for environmentalregulations and show that when jurisdictions compete for firms that engagein environmentally risky behaviour strict liability implements the sociallyoptimal outcome while simple negligence does not even if the jurisdictionsfully cooperate in setting standards of care consequently we argue that even if jurisdictions delegate standard setting to a central authority likein the european union this would not implement the socially optimaloutcome we also demonstrate that harmonization of environmental regulationsmakes more sense if strict liability is used rather than simple negligence

environmental federalism and environmental liability abstract environmental federalism considers what level of government should optimally regulate pollution this paper addresses this question for accidental pollution which government regulates through the ex post liability regimes of either negligence or strict liability we find that decentralizing the choice between these regimes does not in general induce the socially optimal outcome when firms can pay all damages all regions may choose negligence and impose an overly strict standard of due care when firms may be bankrupted by damages all regions may choose strict liability which induces too little care in addition asymmetric equilibria are possible in which some regions choose negligence others strict liability combining negligence with a pigovian tax or strict liability with a bonding requirement can align regional authorities incentives with those of a central government

environmental policy with endogenous plant locations in a game between the governments of two countries each chooses its own environmental policy the nash equilibria of the game are generally not pareto optimal on the one hand each country may want to attract industry giving it an incentive to choose low environmental taxes or standards on the other hand if disutility from pollution is sufficiently high each country might prefer that a firm locates only in other countries this effect tends to make the environmental policy under non cooperation stricter than it would be with cooperation

competition in regional environmental policies when plant locations are endogenous abstract a two region model is presented in which an imperfectly competitive firm produces a good with increasing returns at the plant level production of the good causes local pollution the firm decides whether to maintain plants in both regions serve both regions from a single plant or shut down if the disutility of pollution is high enough the two regions will compete by increasing their environmental taxes standards until the polluting firm is driven from the market alternatively if the disutility from pollution is not as great the regions will usually compete by undercutting each other s pollution tax rates

how liable should a lender be the case of judgment proof firms and environmental risk comment recently u s environmental law has shown a tendency toward increased lender liability a model of a potentially judgment proof owner of a firm a lender and a potential victim is developed in which this policy can increase accident frequency and reduce efficiency full partial and zero lender liability rules and a minimum equity requirement are analyzed partial lender liability and an equivalent minimum equity requirement deliver the highest level of efficiency although the former can deliver a higher contribution by the lender to the victim than the latter policy and empirical implications are also discussed copyright 1995 by american economic association

a disequilibrium model with smooth regime transitions and a keynesian spillover for switzerland s labor market abstract this paper presents a disequilibrium labor market model in which aggregation over a continuum of micro markets with different demand supply ratios produces smooth macro relationships mapping aggregate demand and supply onto actual employment and regime proportions aggregate labor demand consists of a classical part derived on a putty clay assumption and a keynesian spillover from the goods market the specification of labor supply incorporates intertemporal substitution the degree of aggregate imbalances on labor and goods markets is measured by business survey data the estimated model indicates a growing mismatch between the micro structures of demand and supply of labor the short run fluctuations of employment are primarily traced back to the keynesian spillover classical determinants of labor demand are relevant as well but only in the medium term labor supply is rather inert and thus absorbs the swings of labor demand only partly

harmonization and optimal environmental policy in a federal system with asymmetric information abstract should environmental policy be set at the federal level to counter incentives for environmental dumping when states act non cooperatively assuming that environmental damage costs are known only by state governments i ask whether this asymmetry of information could rationalize a federal government harmonizing environmental policies across states i show that asymmetric information narrows the difference in environmental policies across states relative to full information but does not justify harmonization the welfare loss from harmonization rises sharply with the variance in damage costs across states and can erode the benefit of setting policy at the federal level to counter environmental dumping

environmental innovation policy and international competition we consider one polluting industry in an open economy the national government implements a policy of industrial pollution control by inducing appropriate technological innovation to reduce toxic emissions the emission reducing innovations are developed through firm specific costly investments under different hypotheses on market structure perfect competition bertrand and cournot oligopoly international competition forces the national government to subsidize innovation the appropriate subsidy scheme varies according to the information available to the government and according to market structure if information is asymmetric the subsidy must include the information premium necessary to separate different types of firms

staggered price setting translog preferences and endogenous persistence abstract this paper generates persistent real effects of a monetary disturbance in the context of staggered price setters the model combines two related and reinforcing features a translog demand structure and a particular input output production structure these features offer a rationale why a firm when computing its own optimal contract price is influenced by the prices set in other overlapping contracts practically the two features interact in a positive manner and provide a way to generate significant endogenous persistence

sticky price models of the business cycle can the contract multiplier solve the persistence problem we construct a quantitative equilibrium model with firms setting prices in a staggered fashion and use it to ask whether monetary shocks can generate business cycle fluctuations these fluctuations include persistent movements in output along with the other defining features of business cycles like volatile investment and smooth consumption we assume that prices are exogenously sticky for a short time persistent output fluctuations require endogenous price stickiness in the sense that firms choose not to change prices much when they can do so we find that for a wide range of parameter values the amount of endogenous stickiness is small thus we find that in a standard quantitative model staggered price setting alone does not generate business cycle fluctuations

real wage rigidities and the new keynesian model most central banks perceive a trade off between stabilizing inflation and stabilizing the gap between output and desired output however the standard new keynesian framework implies no such trade off in that framework stabilizing inflation is equivalent to stabilizing the welfare relevant output gap in this paper we argue that this property of the new keynesian framework which we call the divine coincidence is due to a special feature of the model the absence of nontrivial real imperfections we focus on one such real imperfection namely real wage rigidities when the baseline new keynesian model is extended to allow for real wage rigidities the divine coincidence disappears and central banks indeed face a trade off between stabilizing inflation and stabilizing the welfare relevant output gap we show that not only does the extended model have more realistic normative implications but it also has appealing positive properties in particular it provides a natural interpretation for the dynamic inflation unemployment relation found in the data

the dynamic effects of aggregate demand and supply disturbances we interpret fluctuations in gnp and unemployment as due to two types of disturbances disturbances that have a permanent effect on output and disturbances that do not we interpret the first as supply disturbances the second as demand disturbances demand disturbances have a hump shaped mirror image effect on output and unemployment the effect of supply disturbances on output increases steadily over time peaking after two years and reaching a plateau after five years

the choice of a liability regime when there is a regulatory gatekeeper consider a firm planning a project that poses a risk of environmental spillovers such a firm might be deterred by the threat of legal liability or restrained by gatekeeper regulation if regulators would be perfect gatekeepers then negligence based liability combined with regulation is more efficient that strict liability with or without regulation however if the regulator has incomplete information then any of a variety of regimes could be the most efficient harsher regimes regulation rather than laissez faire and strict liability rather than negligence are more appropriate for larger risks the choice of a liability regime is more complicated however if regulators are biased if they are biased against projects then negligence plus regulation is less likely to be the most efficient regime if regulators are biased toward projects then it is possible that apparently soft liability regimes are more desirable when risk is high

wage theory new deal labor policy and the great depression were government and unions to blame a growing number of economists blame the length and severity of the great depression on factors that rigidified wage rates raised production costs and interfered with the market allocation of labor the target of their critique is president franklin roosevelt s new deal labor program which they portray as creating a series of large negative supply shocks through encouragement of unions minimum wages unemployment insurance and other anticompetitive industrial relations practices the author uses a combination of institutional and keynesian theory to present the other side of the story drawing principally from the works of j r commons and j m keynes he develops both a spending and productivity rationale for stable wages during the great depression and demonstrates that the new deal s interventionist labor program was on balance necessary and beneficial he also highlights the neglected macroeconomic dimension of industrial relations theory and policy

trend breaks long run restrictions and contractionary technology improvements abstract structural vector autoregressions with long run restrictions are extraordinarily sensitive to low frequency correlations recent literature finds that the estimated effects of technology shocks are sensitive to how one treats hours per capita however after allowing for statistically and economically significant trend breaks in productivity results are much less sensitive hours fall when technology improves the issue is that the common high low high pattern of productivity growth and hours i e the low frequency correlation inevitably leads to a positive estimated response the trend breaks control for this correlation this example suggests a practical need for care in using long run restrictions

labor utilization and nonwage labor costs in a disequilibrium macro framework the literature on labor utilization and nonwage labor costs is extended to incorporate recent approaches to macroeconomic disequilibrium modeling based on the smoothing by aggregation principle this leads to a reformulation of the basic sneessens dreze type model by treating employment and working hours as separate inputs the inclusion of nonwage labor costs serves a double purpose first they represent a restriction in the profit maximizing process and second they serve as a proxy for the fixity of labor the results differ substantially from simulation studies that disregard the utilization of labor and the nonlinear structure of labor costs

effects of shorter hours on employment in disequilibrium models abstract in this paper the employment effects of a wage compensated and non compensated reduction of standard working time are examined in the context of disequilibrium theory in disequilibrium models with exogenous working time noncompensated shorter standard hours increase employment in both regimes keynesian and classical unemployment wage compensation reduces the employment response at a regime dependent rate if working time is endogenized by taking into account overtime effects the employment response of shorter hours is positive in keynesian unemployment and negative in classical unemployment wage compensation increases the employment effect in the keynesian regime and decreases it in the classical regime a model is presented that allows for hours as well as capital stock adjustment and integrates non competitive price setting

nominal and real wage rigidities in new keynesian models a critical survey the labour market is receiving increasing attention in the new keynesian literature in this paper i critically survey this literature in order to highlight the role played by wage rigidities in the explanation of fluctuations caused by technology shocks to this aim i present a dynamic stochastic general equilibrium model with sticky prices nominal wage rigidities and hiring costs the comparison between this model and that of blanchard and gali highlights the non trivial differences which exist in the way nominal wage and real wage rigidities drive the economy s dynamics my conclusion is that models incorporating nominal wage rigidities and some degree of price stickiness provide a better account of macroeconomic dynamics than models with real wage rigidities copyright 2009 blackwell publishing ltd

the real debt resistance hypothesis and persistence of unemployment in the oecd countries according to friedman 1968 p 10 unemployment above the natural rate should sooner or later lead to deflation and an accelerating deflation at that as table 1 shows until the mid 1980s the course of movement of the rate of unemployment and inflation in the oecd countries is in conformity with this hypothesis however since the mid 1980s and in spite of continuing high unemployment the rate of inflation remained at a significantly positive level there is certainly not evidence of accelerated deflation as predicted by friedman the most popular explanation offered is the possibility of presence of the hysteretic tendencies in the nairu three famous models in this respect are the insider outsider hypothesis of blanchard and summers 1986 the capacity constraint hypothesis of sneessens and dreze 1986 and the declining search effectiveness long term unemployment hypothesis of layard nickell and jackman 1991 all these explanations rely on the real wage rigidity as table 1 shows however the rigidity of real wages seems to be more due to the downward rigidity of the rate of growth of nominal wages and prices for example the average weekly earnings of the production workers in the us manufacturing sector has steadily increased since 1946 1 thus contrary to the dominant view in the new keynesian school see gordon 1990 what needs to be explained is the long term downward rigidity of nominal wages

locational choices of firms and decentralized environmental policy with various instruments abstract suppose there exists a federation with a given number of mobile firms generating waste emissions in the jurisdiction in which they locate this paper demonstrates that if jurisdictions use emission taxes or marketable emission rights to control pollution within their boundaries and distribute the revenues captured by these instruments in a socially efficient way firms locate efficiently taking their pollution externalities into account decentralized environmental policy relying on direct controls however prevents locational efficiency of mobile firms furthermore if jurisdictions are small decentralized environmental policy with emission taxes and marketable pollution rights also support an efficient environmental quality while a policy using direct controls sets too high emission standards

a discussion of belgian unemployment combining traditional concepts and disequilibrium econometrics with a gdp of less than 100 billion and exports of more than 60 billion belgium comes perhaps closer than any other country to being a small open economy consequently trends in world trade and export performance have a major impact on domestic activity whereas the impact of domestic fiscal policy is damped by import leakages table 1 presents a few figures confirming these observations

capital accumulation and unemployment a tale of two continents in contrast to much recent work regarding the causes of european unemployment in this paper we emphasize the importance of capital accumulation but unlike the few previous studies which have examined the relationship between capital accumulation and unemployment we argue that what matters for the evolution of employment and the unemployment rate is not the absolute growth rate of a country s capital stock but its evolution relative to other countries capital stock the empirical validity of the above statement is demonstrated for almost all oecd countries using quarterly time series data for the period 1961 1995 more detailed evidence is also presented for germany japan and the united kingdom

staggered price setting staggered wage setting and business cycle persistence abstract staggered price setting and staggered wage setting are commonly viewed as similar mechanisms in generating persistent real effects of monetary shocks in this paper we distinguish the two mechanisms in a dynamic stochastic general equilibrium framework we show that although the dynamic price setting and wage setting equations are alike a key parameter governing persistence is linked to the underlying preferences and technologies in different ways with reasonable parameter values the staggered price mechanism by itself is incapable of while the staggered wage mechanism plays an important role in generating persistence

a macroeconomic rationing model of the belgian economy despite a wide recognition of the possible theoretical fruitfulness of the quantity rationing approach there prevails an equally wide suspicion as to the possibility of getting sensible econometric results out of this type of specification our aim in the following will be to show that sensible results can indeed be obtained we shall consider for that purpose the belgian goods and labor markets over the years 1953 1978 and specify the econometric model along the lines suggested in the previous chapter

cost and income based measures of human capital human capital is increasingly believed to play an important role in the growth process however adequately measuring its stock remains controversial in this paper three general approaches to measurement are identified cost based income based and educational stock based this survey focuses on the first two approaches and provides a critical review of the theories and their applications to data from a range of countries particular emphasis is placed upon the work of jorgenson and fraumeni 1989 1992 and some new results for new zealand based upon their approach are also presented