Labour markets in a Post-Keynesian growth model: the effects of endogenous productivity growth and working time reduction

We study endogenous employment and distribution dynamics in a Post-Keynesian model of Kalecki-Steindl tradition. Productivity adjustments stabilize employment and the labour share in the long run: technological change allows firms to replenish the reserve army of workers in struggle over income shares and thereby keep wage demands in check. We discuss stability conditions and the equilibrium dynamics. This allows us to study how legal working time and its reduction affect the equilibrium. We find that a demand shock is likely to lower the profit share and increase the employment rate. A supply shock in contrast tends to have detrimental effects on employment and income distribution. Labour market institutions and a working time reduction have no long-term effect on growth, distribution and inflation in the model. The effects on the level of capital stock and output however are positive in a wage-led demand regime. Furthermore, an erosion of labour market institutions dampens inflation temporarily. The model provides possible explanations as to the causes of several current economic phenomena such as secular stagnation, digitalisation, and the break-down of the Philips curve.Series: Ecological Economic Paper

Wirtschaftswachstum und die funktionale und persönliche Verteilung von Einkommen - Überblick und neue Erkenntnisse

Dieser Beitrag gibt einen Überblick über wissenschaftlich untersuchte den Zusammenhänge zwischen funktionaler und persönlicher (Lohn)Einkommensverteilung, der aggregierten Nachfrage und dem Wirtschaftswachstum. Zudem werden die Ergebnisse einer ökonometrischen Schätzung dieses Zusammenhanges für die USA für die Jahre 1967 - 2010 präsentiert. Aus den theoretischen Überlegungen und empirischen Untersuchungen zeigt sich, dass eine ungleichere Verteilung von Lohneinkommen zu geringerem Wirtschaftswachstum führt und dass bei einer gleicheren Verteilung von Lohneinkommen die Umverteilung hin zu Löhnen generell wachstumsfördernd ist. (author's abstract)Series: Ecological Economic Paper

Ecological Macroeconomics: Introduction and Review

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Ecological Macreconomics: Introduction and Review

The Great Recession of the past years has brought macroeconomics back. Many of the recession's phenomena, causes and consequences alike, cannot be understood using solely microeconomic decisionmaking. Over the past decades the economics profession has pursued the implications of rational choices and enshrined them in so-called "micro foundations" as a hallmark of modern economic theory. By focusing on the choices and actions of individual consumers, firms, or the government, however, one can easily miss important determinants of the economic system which only arise at the meso- or the macroeconomic levels where institutions, coordination, and complexity in general are important and sometimes even can take on a life of their own. To lesser extent, ecological economics has fallen prone to similar pitfalls by mostly focusing the unit of investigation on low-level, small-scale subsystems of the economy. There are, of course, notable exceptions including the early contributors Boulding and Georgescu-Roegen and the general interest of ecological economists in the field of (ecological) macroeconomics has been increasing. (authors' abstract)Series: Ecological Economic Paper

Simple rules for climate policy and integrated assessment

A simple integrated assessment framework that gives rules for the optimal carbon price, transition to the carbon-free era and stranded carbon assets is presented, which highlights the ethical, economic, geophysical and political drivers of optimal climate policy. For the ethics we discuss the role of intergenerational inequality aversion and the discount rate, where we show the importance of lower discount rates for appraisal of longer run benefit and of policy makers using lower discount rates than private agents. The economics depends on the costs and rates of technical progress in production of fossil fuel, its substitute renewable energies and sequestration. The geophysics depends on the permanent and transient components of atmospheric carbon and the relatively fast temperature response, and we allow for positive feedbacks. The politics stems from international free-rider problems in absence of a global climate deal. We show how results change if different assumptions are made about each of the drivers of climate policy. Our main objective is to offer an easy back-on-the-envelope analysis, which can be used for teaching and communication with policy makers.Series: Ecological Economic Paper

The Agnostic's Response to Climate Deniers: Price Carbon!

With the election of President Trump, climate deniers feel emboldened and moved from the fringes to the centre of global policy making. We study how an agnostic approach to policy, based on Pascal's wager and allowing for subjective prior probability beliefs about whether climate deniers are right, prices carbon. Using the DICE integrated assessment model, we find that assigning a 10% chance of climate deniers being correct lowers the global price on carbon in 2020 only marginally: from $21 to$19 per ton of carbon dioxide if policymakers apply "Nordhaus discounting" and from $91 to$84 per ton of carbon dioxide if they apply "Stern discounting". Agnostics' reflection of remaining scientific uncertainty leaves climate policy essentially unchanged. The robustness of an ambitious climate policy also follows from using the max-min or the min-max regret principle. Letting the coefficient of relative ambiguity aversion vary from zero, corresponding to expected utility analysis, to infinity, corresponding to the max-min principle, we show how policy makers deal with fundamental climate model uncertainty if they are prepared to assign prior probabilities to different views of the world being correct. Allowing for an ethical discount rate and a higher market discount rate and for a wide range of sensitivity exercises including damage uncertainty, we show that pricing carbon is the robust response under rising climate scepticism.Series: Ecological Economic Paper

Cumulative Emissions, Unburnable Fossil Fuel and the Optimal Carbon Tax

A new IAM is used to calculate the optimal tradeoff between, on the one hand,locking up fossil fuel and curbing global warming, and, on the other hand,sacrificing consumption now and in the near future. This IAM uses the Oxford carbon cycle, which differs from DICE, FUND and PAGE in that cumulative emissions are the key driving force of changes in temperature. We highlight how time impatience, intergenerational inequality aversion and expected trend growth affect the time paths of the optimal global carbon tax and the optimal amount of fossil fuel reserves to leave untapped. We also compare these with the adverse and deleterious global warming trajectories that occur if no policy actions are taken. (authors' abstract)Series: Ecological Economic Paper

Demand Drives Growth all the Way

A demand-driven alternative to the conventional Solow-Swan growth model is analyzed. Its medium run is built around Marx-Goodwin cycles of demand and distribution. Long-run income and wealth distributions follow rules of accumulation stated by Pasinetti in combination with a technical progress function for labor productivity growth incorporating a Kaldor effect and induced innovation. An explicit steady state solution is presented along with analysis of dynamics. When wage income of capitalist households is introduced, the Samuelson-Modigliani steady state "dual" to Pasinetti's cannot be stable. Numerical simulation loosely based on US data suggests that the long-run growth rate is around two percent per year and that the capitalist share of wealth may rise from about forty to seventy percent due to positive medium-term feedback of higher wealth inequality into its own growth.Series: Ecological Economic Paper

Economic Growth, Income Distribution, and Climate Change

We present a model based on Keynesian aggregate demand and labor productivity growth to study how climate damage affects the long-run evolution of the economy. Climate change induced by greenhouse gas lowers profitability, reducing investment and cutting output in the short and long runs. Short-run employment falls due to deficient demand. In the long run productivity growth is slower, lowering potential income levels. Climate policy can increase incomes and employment in the short and long runs while a continuation of business-as-usual leads to a dystopian income distribution with affluence for few and high levels of unemployment for the rest.Series: Ecological Economic Paper

An Integrated Approach to Climate Change, Income Distribution, Employment, and Economic Growth*

A demand-driven growth model involving capital accumulation and the dynamics of greenhouse gas (GHG) concentration is set up to examine macroeconomic issues raised by global warming, e.g. effects on output and employment of rising levels of GHG; offsets by mitigation; relationships among energy use and labor productivity, income distribution, and growth; the economic significance of the Jevons and other paradoxes; sustainable consumption and possible reductions in employment; and sources of instability and cyclicality implicit in the twodimensional dynamical system. The emphasis is on the combination of biophysical limits and Post- Keynesian growth theory and the qualitative patterns of system adjustment and the dynamics that emerge.Series: Ecological Economic Paper