Real Wages and Monetary Policy: A DSGE Approach

Comment

Are Real Wages Procyclical Conditional on a Monetary Policy Shock?

This paper studies the effect of wage rigidities on the transmission of fiscal and monetary policy shocks. We calculate downward wage rigidities across U.S. states using the Current Population Survey. These estimates are used to explain differences in the state-level economic effects of identical national shocks in interest rates and taxes. In line with the role of sticky wages in New Keynesian models, we find that contractionary monetary policy and tax shocks increase unemployment and decrease economic activity in rigid states considerably more than in flexible states. We also find larger and more persistent effects of monetary and tax policy shocks for states where the ratio between minimum and median wage is higher and for states that do not have right-to-work legislation.

PurposeThe purpose of this paper is to compare business cycle fluctuations in Ethiopia under interest rate and money growth rules.Design/methodology/approachIn order to achieve this objective, the author constructs a medium-scale open economy dynamic stochastic general equilibrium (DSGE) model. The model features several nominal and real distortions including habit formation in consumption, price rigidity, deviation from purchasing power parity and imperfect capital mobility. The paper also distinguishes between liquidity-constrained and Ricardian households. The model parameters are calibrated for the Ethiopian economy based on data covering the period January 2000–April 2015.FindingsThe main result suggests that: the model economy with money growth rule is substantially less powerful or more muted for the amplification and transmission of exogenous shocks originating from government spending programs, monetary policy, technological progress and exchange rate movements. The responses of output to fiscal policy shocks are relatively stronger under autarky which appears to confirm the findings of Ilzetzki et al. (2013) who suggest bigger multipliers in self-sufficient, closed economies. With regard to positive productivity shock, however, the model with interest rate feedback rule generates a decline in output and an increase in inflation, which are at odds with conventional empirical regularities.Research limitations/implicationsThe major implication is that a central bank regulating some measure of monetary stocks should not expect (fear) as much expansion (contraction) in output following currency devaluation (liquidity withdrawal) as a sister central bank that relies on an interest rate feedback rule. As emphasized by Mishra et al. (2010) the necessary conditions for stronger transmission of interest-rule-based monetary policy shocks are hardly existent in emerging and developing economies targeting monetary aggregates; hence the relatively weaker responses of output and inflation in the model economy with money growth rule. Monetary policy authorities need to be cautious when using DSGE models to analyze business cycle dynamics. Quite often, DSGE models tend to mimic the proverbial “crooked house” built to every man’s advise. Whenever additional modification is made to an existing baseline model, previously established regularities break down. For instance, this paper documented negative response of output to technology shock. Such contradictions are not uncommon. For example, Furlanetto (2006) and Ramayandi (2008) have also found similarly inconsistent responses to fiscal and productivity shocks, respectively.Originality/valueUsing DSGE models for research and teaching purposes is not common in developing economies. To the best of the author’s knowledge, only one other Ethiopian author did apply DSGE model to study business cycle fluctuation in Ethiopia albeit under the implausible assumption of perfect capital mobility and a central bank following interest rate rule. The contribution of this paper is that it departs from these two unrealistic assumptions by allowing international risk premium as a function of the net foreign asset position of the country and by applying money growth rule which closely mimics the behavior of central banks in low-income economies such as Ethiopia.

Comment

Real wages and aggregate demand shocks: contradictory evidence from VARs

Discussion

This paper develops and estimates a dynamic stochastic general equilibrium (DSGE) model with sticky prices and wages for the euro area. The model incorporates various other features such as habit formation, costs of adjustment in capital accumulation and variable capacity utilization. It is estimated with Bayesian techniques using seven key macroeconomic variables: GDP, consumption, investment, prices, real wages, employment, and the nominal interest rate. The introduction of ten orthogonal structural shocks (including productivity, labor supply, investment, preference, cost-push, and monetary policy shocks) allows for an empirical investigation of the effects of such shocks and of their contribution to business cycle e uctuations in the euro area. Using the estimated model, we also analyze the output (real interest rate) gap, dee ned as the difference between the actual and model-based potential output (real interest rate). (JEL: E4, E5)

An Estimated Dynamic Stochastic General Equilibrium Model of the Euro Area

Quality, price stickiness, and monetary policy

Modern monetary business-cycle models rely heavily on price and wage rigidity. While there is substantial evidence that prices do not adjust frequently, there is much less evidence on whether wage rigidity is an important feature of real world labor markets. While real average hourly earnings are not particularly cyclical, and do not react significantly to monetary policy shocks, systematic changes in the composition of employed workers and implicit contracts within employment arrangements make it difficult to draw strong conclusions about the importance of wage rigidity. We augment a workhorse monetary DSGE model by allowing for endogenous changes in the composition of workers and also by explicitly allowing for a difference between allocative wages and remitted wages. Using both individual-level and aggregate data, we study and extend the available evidence on the cyclicality of wages and we pay particular attention to the response of wages to identified monetary policy shocks. Our analysis suggests several broad conclusions: (i) in the data, composition bias plays a modest but noticeable role in cyclical compensation patterns; (ii) empirically, both the wages for newly hired workers and the "user cost of labor" respond strongly to identified monetary policy innovations; (iii) a model with implicit contracts between workers and firms and a flexible allocative wage replicates these patterns well. We conclude that price rigidity likely plays a substantially more important role than wage rigidity in governing economic fluctuations.

Allocative and Remitted Wages

The views expressed in this Working Paper are those of the author(s) and do not necessarily represent those of the IMF or IMP policy.

How to quantitatively measure the macro dynamic effect of monetary policy is one of the most critical issues in the mainstream macro research （Benanke and Gertler, 1995; Christiano, et al., 1999）. In the context of global financial integration, how will a country’s monetary policy affect the macroeconomy of other countries? This international spillover effect of monetary policy has been hotly debated in the academy, but it has not yet been conclusive. The reason is that, empirically, how to identify the impact of exogenous monetary policy has not been well resolved at the technical level; theoretically, mainstream macroeconomic models provide various transmission mechanisms, and no consensus has been reached.Due to the above difficulties, research on the international spillover effect of monetary policy is still in its early stage, and the impact of US monetary policy on China’s economy is seldom studied. From the empirical point of view, this article follows the latest literature Barakchian and Crowe （2013, hereinafter referred to as BC） to identify the impact of exogenous monetary policy in the United States, and studies the dynamic impact of US monetary policy on China’s macroeconomy and its underlying transmission mechanism. This article provides new evidence on the international spillover effect of monetary policy and also tests the existing theories in international economics from an empirical perspective.The primary issue to be addressed in monetary policy research is how to identify exogenous monetary policy shocks. However, macroeconomic regulation often relies on the current situation of aggregate economy. Since there is a strong endogenous relationship among economic variables, it is difficult to directly construct a system that includes policy variables and macroeconomic indicators to identify exogenous monetary policy shocks. To this end, BC （2013） solves the endogenous issue regarding the identification of monetary policy shocks. The exogenous shock constructed through their indicator not only avoids making ad hoc assumptions about the feedback rules of monetary policy, but also avoids the endogenous problems and the sample selection issue in traditional identification methods.Based on the US monetary policy shock constructed by BC （2013）, this article studies the spillover effect of US monetary policy on China’s macroeconomy and therefore solves the aforementioned endogenous problem of monetary policy shocks. The basic model of the empirical analysis is a three-variable structural vector autoregressive error correction model （SVECM） that includes China’s industrial output, price index, and US monetary policy shocks. Based on this model, we find that the opening-up policy of WTO accession at the end of 2001 has a significant structural impact on the spillover effect of US monetary policy and its transmission mechanism. Specifically, we divide the monthly data from 1996−2008 into two sub-samples before and after January 2002. Using the 2002−2008 subsample, we find that the impact of the US’s tightening monetary policy significantly causes China’s output to rise and prices to fall, thus performing as a positive supply shock to China’s economy. Based on the 1996−2001 subsample, US monetary policy will not have a significant impact on China’s economy. The above findings are largely different from the findings in Kim （1999, 2001）, Canova （2005）, and among others.In the analysis of the transmission mechanism, this article finds that the price channel can well explain the stylized facts in the data. Our theory proceeds as follows: The US tightening monetary policy will lead to the appreciation of the US dollar, which will cause US manufacturers to lower their export prices in US dollars （Exchange Rate Pass-Through）. Due to the yuan-dollar fixed exchange rate system, China’s import prices will decline, and the prices of domestic raw materials and CPI will decline. Lower production costs lead manufacturers to increase production, which is reflected by an increase in China’s output. Therefore, the price channel indicates that the US tightening monetary policy is equivalent to a positive supply shock, which will simultaneously increase China’s output and reduce the price level. Based on the extended SVECM system, we find that Chinese macro data can identify the price channels of imported goods. Further robustness analysis shows that our main findings are robust to different sample periods and different model settings. Besides, in order to better explain the identification of import price channels, we have conducted empirical tests on several standard theories in international economics. The results show that the standard theories fail to explain the Chinese data. Therefore, the price channel provides the primary transmission mechanism of the spillover effect of US monetary policy on China’s economy, and this channel also explains the empirical finding that WTO has a structural impact on the spillover effect.

Tightly regulated product and labor markets in India have resulted in a lack of competition in product markets and the development of a large informal sector. This paper studies the effect of frictions in product and labor markets on the effectiveness of monetary policy, using a small open-economy DSGE model with informal and formal sectors, monopolistic competition, price and wage stickiness, and endogenous firm entry. Product market regulation affects firm entry costs and the degree of competition, and labor market regulation affects hiring costs and worker bargaining power. We show that monetary policy is less effective under tight regulations: monetary policy shocks have a smaller effect on inflation, compared to a situation with lower hiring costs or lower entry costs.