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Japan is aging and has the highest government debt-to-output ratio among advanced economies. In this article, we build a micro data-based, large-scale overlapping generations model for Japan in which individuals differ in age, gender, employment type, income, and asset holdings, and incorporate the Japanese pension rules. Using existing pension law, current fiscal policy, and medium variants of demographic projections, we produce future paths for government expenditures and tax revenues, with implications for government debt and the public pension fund. Additional pension reform, a higher consumption tax, and higher female labor force participation help achieve fiscal stability.

The paper analyzes the economic impacts of climate change-induced fluctuations on the performance of Ethiopia's agriculture, using a countrywide computable general equilibrium (CGE) model. We model the impacts on agriculture using a Ricardian model, where current agricultural production is modelled as a function of temperature and precipitation, among other things, and where future agriculture is assumed to follow the same climate function. The effect of overall climate change is projected to be relatively benign until approximately 2030, but will become considerably worse thereafter. Our simulation results indicate that, over a 50-year period, the projected reduction in agricultural productivity may lead to reductions in average income of some 20 per cent compared with the outcome that would have prevailed in the absence of climate change. This indicates that adaptation policies – both government planned and those that ease autonomous adaptation by farmers – will be crucial for Ethiopia's future development.

A comparative analysis of forecasts of the dynamics of greenhouse gas emissions in the energy sector of the Russian Federation until 2060 is presented. The analysis has been fulfilled within recent years by groups of experts both from Russia and abroad. A database of 71 scenarios has been formed. The “range of disconformity” of the forecasts and the evolution of the forecasting estimates were studied which permitted to evaluate the possibilities of emissions limitation and to find out the configuration of the “solution space”: different combinations of improvement of the energy efficiency, development of low-carbon and carbonless technologies, as well as to reveal the character of the feedback between measures of the emission limitation policy and economic growth.

The fraction of GDP devoted to health care in the United States is the highest in the world and is rising rapidly. Recent economic studies have highlighted the growing value of health improvements, but less attention has been paid to the efficiency costs of tax-financed spending to pay for such improvements. This paper uses a life cycle model of labor supply, saving, and longevity improvement to measure the balanced-budget impact of continued growth in the Medicare and Medicaid programs. The model predicts that top marginal tax rates could rise to 70% by 2060, depending on the progressivity of future tax changes. The deadweight loss of the tax system is greater when the financing is more progressive. If the share of taxes paid by high-income taxpayers remains the same, the efficiency cost of raising the revenue needed to finance the additional health spending is $1.48 per dollar of revenue collected, and GDP declines (relative to trend) by 11%. A proportional payroll tax has a lower efficiency cost (41 cents per dollar of revenue averaged over all tax hikes, a 5% drop in GDP) but more than doubles the share of the tax burden borne by lower-income taxpayers. Empirical support for the model comes from analysis of OECD country data showing that countries facing higher tax burdens in 1979 experienced slower health care spending growth in subsequent decades. The rising burden imposed by the public financing of health care expenditures may therefore serve as a brake on health care spending growth.

This paper describes a possible long-run scenario for selected OECD and major emerging market economies. It compares outcomes for Canada against these countries' performance in a variety of dimensions that together determine productivity and output growth based on a production-function approach. It concludes that Canada should enjoy reasonable productivity and output growth in the coming half century, despite the less favourable outlook for the age structure of the population. It goes on to suggest three areas where policymakers should focus their attention: seeking more vigorous product market competition; reforming the tax system with a view to removing unnecessary distortions and emphasising the importance of tertiary education and innovation across a broad range of policy areas. It finishes with a call for the establishment of a publicly funded productivity commission, to assess existing policies and proposed changes through a productivity, innovation and competitiveness lens.

The present paper explores demographic trends in Germany, as well as the determinants of these trends, and the economic implications of these demographic changes for the country. A detailed spatial analysis reveals substantial differences in the speed and intensity of the processes of population aging and population decline across the German regions. The results indicate that these processes are particularly pronounced in the state of Mecklenburg Western-Pomerania. As a new contribution to the literature, our analysis also sheds light on regional gender imbalances. JEL Classification: J11, J14, J18, N34

This paper proposes a new set of public health and long-term care expenditure projections until 2060, seven years after a first set of projections was published by the OECD. It disentangles health from longterm care expenditure, as well as the demographic from the non-demographic drivers, and refines the previous methodology, in particular by extending the country coverage. Regarding health care, nondemographic drivers are identified, with an attempt to better understand the residual expenditure growth by determining which share can be explained by the evolution of health prices and technology effects. Concerning LTC, an estimation of the determinants of the number of dependants (people needing help in their daily life activities) is provided. A cost-containment and a cost-pressure scenario are provided, together with sensitivity analysis. On average across OECD countries, total health and long-term care expenditure is projected to increase by 3.3 and 7.7 percentage points of GDP between 2010 and 2060 in the cost-containment and the cost-pressure scenarios respectively. For the BRIICS over the same period, it is projected to increase by 2.8 and 7.3 percentage points of GDP in the cost-containment and the costpressure scenarios respectively.