A Linear Quadratic Approach to Optimal Monetary Policy with Unemployment and Sticky Prices: The Case of a Distorted Steady State

Ravenna and Walsh (2010) develop a linear quadratic framework for optimal monetary policy analysis in a New Keynesian model featuring search and matching frictions and show that maximization of expected utility of the representative household is equivalent to minimizing a quadratic loss function that consists of inflation, and two appropriately defined gaps involving unemployment and labor market tightness. This paper generalizes their analysis, most importantly by relaxing the Hosios (1990) condition which eliminates the distortions resulting from labor market inefficiencies, such that the equilibrium level of unemployment under flexible prices would not necessarily be optimal. I take account of steady-state distortions using the methodology of Benigno and Woodford (2005) and derive a quadratic loss function that involves the same three terms, albeit with different relative weights and definitions for unemployment- and labor market tightness gaps. I evaluate the resulting loss function subject to a simple set of log-linearized equilibrium relationships and perform policy analysis. The key result of the paper is that search externalities give rise to an endogenous cost push term in the new Keynesian Phillips curve, suggesting a case against complete price stability as the only goal of monetary policy, because there is now a trade-off between stabilizing inflation and reducing inefficient unemployment fluctuations. Transitory movements of inflation in this environment helps job creation and hence prevents excessive volatility of unemployment

The Differential Effects of Oil Demand and Supply Shocks on the Global Economy

We employ a set of sign restrictions on the generalized impulse responses of a Global VAR model, estimated for 38 countries/regions over the period 1979Q2.2011Q2, to discriminate between supply-driven and demand-driven oil-price shocks and to study the time profile of their macroeconomic effects for different countries. The results indicate that the economic consequences of a supply-driven oil-price shock are very different from those of an oil-demand shock driven by global economic activity, and vary for oil-importing countries compared to energy exporters. While oil importers typically face a long-lived fall in economic activity in response to a supply-driven surge in oil prices, the impact is positive for energy-exporting countries that possess large proven oil/gas reserves. However, in response to an oil-demand disturbance, almost all countries in our sample experience long-run inflationary pressures and a short-run increase in real output.oil-demand and oil-supply shocks

Oil Prices, External Income, and Growth: Lessons from Jordan

This paper extends the long-run growth model of Esfahani et al. (2009) to a labour exporting country that receives large inflows of external income - the sum of remittances, FDI and general government transfers - from major oil exporting economies. The theoretical model predicts real oil prices to be one of the main long-run drivers of real output. Using quarterly data between 1979 and 2009 on core macroeconomic variables for Jordan and a number of key foreign variables, we identify two long-run relationships: an output equation as predicted by theory and an equation linking foreign and domestic inflation rates. It is shown that real output in the long run is shaped by (i) oil prices through their impact on external income and in turn on capital accumulation, and (ii) technological transfers through foreign output. The empirical analysis of the paper confirms the hypothesis that a large share of Jordan's output volatility can be associated with fluctuations in net income received from abroad. External factors, however, cannot be relied upon to provide similar growth stimuli in the future, and therefore it will be important to diversify the sources of growth in order to achieve a high and sustained level of income.oil price shock

The US oil supply revolution and the global economy

© 2018 The Author(s) This paper investigates the global macroeconomic consequences of falling oil prices due to the oil revolution in the USA, using a global VAR model estimated for 38 countries/regions over the period 1979Q2–2011Q2. Set identification of the US oil supply shock is achieved through imposing dynamic sign restrictions on the impulse responses of the model. The results show that there are considerable heterogeneities in the responses of different countries to a US supply-driven oil price shock, with real GDP increasing in both advanced and emerging market oil-importing economies, output declining in commodity exporters, inflation falling in most countries, and equity prices rising worldwide. Overall, our results suggest that a US supply-driven oil price shock (equivalent to a 10–12% fall per quarter in the price of oil) results in an increase in global growth by 0.16–0.37 percentage points in the medium term. This is mainly due to an increase in spending by oil-importing countries, which exceeds the decline in expenditure by oil exporters.Kamiar Mohaddes gratefully acknowledges financial support from the Economic Research Forum (ERF

The Global Impact of the Systemic Economies and MENA Business Cycles

This paper analyses spillovers from macroeconomic shocks in systemic economies (China, the Euro Area, and the United States) to the Middle East and North Africa (MENA) region as well as outward spillovers from a GDP shock in the Gulf Cooperation Council (GCC) countries and MENA oil exporters to the rest of the world. This analysis is based on a Global Vector Autoregression (GVAR) model, estimated for 38 countries/regions over the period 1979Q2 to 2011Q2. Spillovers are transmitted across economies via trade, financial, and commodity price linkages. The results show that the MENA countries are more sensitive to developments in China than to shocks in the Euro Area or the United States, in line with the direction of evolving trade patterns and the emergence of China as a key driver of the global economy. Outward spillovers from the GCC region and MENA oil exporters are likely to be stronger in their immediate geographical proximity, but also have global implications.international business cycle

Persistent Habits, optimal Monetary Policy Inertia and Interest Rate Smoothing

Dynamic stochastic general equilibrium models featuring imperfect competition and nominal rigidities have become central for the analysis of the monetary transmission mechanism and for understanding the conduct of monetary policy. However, it is agreed that the benchmark model fails to generate the persistence of output and inflation that is observed in the data. Moreover, it cannot provide a theoretically well-grounded justification for the interest rate smoothing behaviour of monetary authorities. This paper attempts to overcome these deficiencies by embedding a multiplicative habit specification in a New Keynesian model. We show that this particular form of habit formation can explain why monetary authorities smooth interest rates

The Global Impact of the Systemic Economies and MENA Business Cycles

This paper analyses spillovers from macroeconomic shocks in systemic economies (China, the Euro Area, and the United States) to the Middle East and North Africa (MENA) region as well as outward spillovers from a GDP shock in the Gulf Cooperation Council (GCC) countries and MENA oil exporters to the rest of the world. This analysis is based on a Global Vector Autoregression (GVAR) model, estimated for 38 countries/regions over the period 1979Q2 to 2011Q2. Spillovers are transmitted across economies via trade, financial, and commodity price linkages. The results show that the MENA countries are more sensitive to developments in China than to shocks in the Euro Area or the United States, in line with the direction of evolving trade patterns and the emergence of China as a key driver of the global economy. Outward spillovers from the GCC region and MENA oil exporters are likely to be stronger in their immediate geographical proximity, but also have global implications.international business cycle