How relevant are nominal contracting schemes for monetary policy?

Due to the scarcity of pertinent evidence, there is currently no general agreement on how to introduce nominal rigidities into monetary macroeconomic models. We examine the role of alternative assumptions about the wage and price setting mechanisms for the assessment of the welfare costs of nominal rigidities and the performance of alternative monetary policy rules in an otherwise standard New Keynesian general equilibrium model. We find that the choice of a particular price and wage setting scheme matters quantitatively for the welfare costs of nominal rigidities. However, the ranking of the welfare costs associated with alternative wage and price setting schemes is robust to changes in the monetary policy rule, and the ranking of the welfare costs associated with alternative monetary policy rules is robust to changes in the wage and price setting scheme. The difference between sticky nominal contracts and sticky information matters more than the difference in the age distribution of prices wages and information implied by alternative price and wage setting schemes.     

Optimal fiscal and monetary policy with sticky wages and sticky prices

We determine the optimal degree of price inflation volatility when nominal wages are sticky and the government uses state-contingent inflation to finance government spending. We address this question in a well-understood Ramsey model of fiscal and monetary policy, in which the benevolent planner has access to labor income taxes, nominally risk-free debt, and money creation. Our main result is that sticky wages alone make price stability optimal in the face of shocks to the government budget, to a degree quantitatively similar as sticky prices alone. Key for our results is an equilibrium restriction between nominal price inflation and nominal wage inflation that holds trivially in a Ramsey model featuring only sticky prices. Our results thus show that when nominal wages are sticky, setting real wages as close as possible to their efficient path is a more important goal of optimal monetary policy than is financing innovations in the government budget via state-contingent inflation. A second important result is that the nominal interest rate can be used to indirectly tax the rents of monopolistic labor suppliers. Taken together, our results uncover features of Ramsey fiscal and monetary policy in the presence of a type of labor market imperfection that is widely-believed to be important.     

Relative prices and expenditure switching effect

This study examines the impact of a monetary shock on a two-country, asymmetrical size general equilibrium model. It is assumed that prices are sticky in the producer's currency, and find that the expenditure switching effect is not significant.     

The hump-shaped behavior of inflation and a dynamic externality

We propose a general equilibrium model that explains the empirical evidence of the hump-shaped response of inflation to a monetary policy shock. The model replaces backward-looking indexation à la Christiano et al. [2005. Nominal rigidities and the dynamic effect of a shock to monetary policy. Journal of Political Economy 113(1), 1-45] with a dynamic externality into the production function of firms. The model, armed with sticky wages and variable capital utilization, has two offsetting effects on real marginal cost over the business cycle. First, increasing factor prices raise real marginal cost in response to an expansionary monetary policy shock in the intermediate run. Second, a dynamic externality reduces real marginal cost in the short run because it raises productivity in response to an increase in output following the shock. Overall, the resulting short-run decrease and intermediate-run increase in marginal cost replicate the hump-shaped behavior of inflation under purely forward-looking price and wage Phillips curves.     

General Equilibrium Impacts of Monetary and Fiscal Policies on Welfare of Households in South Asia

Impacts of fiscal and monetary policies are assessed in an open economy two sector multi‐household general equilibrium tax model with money for South Asia. Despite impressive growth rates there is evidence for alarming gaps in the distribution of income among households that require very careful design of economic policies. Generally the impacts of fiscal expansions are positive for all categories of households under the flexible price system but the gains are much higher for households in the upper income group than for those in the bottom. In theory the equilibrium relative prices guarantee the optimal allocation of resources in such economy. Simulation results show that demand, output and employment are sensitive to the preferences of consumers, confidence of producers and sector specific production technologies. Monetary policy is super‐neutral under flexible price regime but can complement fiscal policy well when aggregate prices are made sticky. Combination of monetary and fiscal policies in this manner can have extensive impacts in efficiency and redistribution. Higher taxes distort incentives to work and investment from richer households slowing down the economy. This reduces the welfare level of both rich and poor. Flexibility in prices enhances the market mechanism and makes the fiscal policy more effective and efficient.     

Oil shocks and monetary policy rules in emerging economies

We examine the effects of shocks in the oil market on key macroeconomic variables in small open economies using a dynamic stochastic general equilibrium model with sticky prices and imperfect competition under different monetary policy rules. The numerical solutions show that the types of exchange rate regimes and monetary policies could partly explain the trends in macroeconomic volatilities considering negative shocks to oil supply (Hamilton, 1983) and positive shocks to oil demand (Kilian, 2009). These findings are confirmed in vector autoregressive responses for Chile and Israel with inflation targeting under flexible exchange regimes and Hong Kong with fixed regime.     

Monetary policy and the role of inventory investment

In this article, we develop a dynamic stochastic general equilibrium (DSGE) model with sticky prices and inventory investment to explore the relationship between inventories and monetary policy. We use the traditional inventory literature as a basis to motivate this extension of the benchmark model and propose inventories as a factor of production. Within this setting, we test the empirical findings in the literature that, since the mid-1980s, monetary policy changed its target towards the inventory component of GDP. We explore this idea in our theoretical model and conclude through simulations that this is a plausible complementary explanation for the reduction in output volatility that was observed during the Great Moderation period.     

FINANCIAL MARKET INTEGRATION AND BUSINESS CYCLE VOLATILITY IN A MONETARY UNION

This paper uses a dynamic general equilibrium two‐country sticky‐price model to analyze the implications of financial market integration for the propagation of asymmetric productivity and government spending shocks in a monetary union. Financial market integration has a small effect on the propagation of these shocks if households can only trade in risk‐free bonds. However, financial market integration has a more substantial effect on the propagation of these shocks in a monetary union with a complete market for state‐contingent claims. This result indicates that it may be important to account for threshold effects in empirical analyses of the impact of financial market integration on business cycle volatility in a monetary union.     

Fair wages in a New Keynesian model of the business cycle

We build a New Keynesian model of the business cycle with sticky prices and real wage rigidities motivated by efficiency wages of the gift exchange variety. Compared to a standard sticky price model, our Fair Wage model provides an explanation for structural unemployment and generates more plausible labor market dynamics—notably accounting for the low correlation between wages and employment. The fair wage induced real wage rigidity also significantly reduces the elasticity of marginal cost with respect to output. The smoother dynamics of real marginal cost increase both amplification and persistence of output responses to monetary shocks, thus remedying the well-known lack of internal propagation of standard sticky price models. We take these improvements as a strong endorsement of the addition of real wage rigidities to nominal price rigidities and conclude that the fair wage extension of this paper constitutes a promising platform for an enriched New Keynesian synthesis.     

成本冲击与价格粘性的非对称性——来自中国微观制造业企业的证据

本文在状态依存模型框架内,估计了中国制造业企业价格粘性的非对称性和异质性。结果显示制造业产品的价格粘性具有非对称的特征,同时企业的"异质性"也影响了产品的价格粘性。根据价格粘性理论,存在价格粘性时,货币是"非中性"的,通过调整货币数量能够影响短期内的产出。然而,由于价格粘性的非对称性,在通货膨胀时期,央行为了抑制通胀而采取的紧缩性货币政策将更多地表现为产出减少,而非价格水平下降;相反,为提高产出而实行的扩张性货币政策将更多地表现为价格水平上升,而非产出水平提高。只有通货紧缩时期,价格粘性的非对称性出现反转,扩张性货币政策在短期内才更有效。     

Liquidity effects and habit formation in a sticky price model

This paper sets up a sticky price model with external habit formations. It shows that the cross-correlation between output and interest rates as well as prices match the data well when there is habit formation. Consumption as well as output display a hump-shaped response to a positive monetary shock when there is habit formation. The paper also shows that the sticky price model with Abel's (1990, 1999) external habit formation succeeds in generating liquidity effects.     

OPTIMAL MONETARY POLICY WITH THE STICKY INFORMATION MODEL OF PRICE ADJUSTMENT: INFLATION OR PRICE‐LEVEL TARGETING?

I investigate the optimal monetary policy in a New Keynesian macroeconomic framework with the sticky information model of price adjustment. The model is solved for optimal policy, and welfare implications of three alternative monetary policy regimes under this optimal policy are compared when there is a cost‐push shock to the economy. These monetary policy regimes are the unconstrained policy, price‐level targeting and inflation targeting regimes. The results illustrate that optimal policy depends on the degree of price stickiness and the persistence of the shock. Inflation targeting emerges as the optimal policy if prices are flexible enough or the shock is persistent enough. However, the unconstrained policy or price‐level targeting might be preferable to inflation targeting if prices are not very flexible and the shock is not very persistent. The results also show that as prices become more flexible, the welfare loss usually gets bigger.     

In or out? The welfare costs of EMU membership

Sweden and the UK have repeatedly refused to join the European and Monetary Union (EMU). Surprisingly, there is very little work on the welfare consequences of the loss of monetary policy flexibility for these countries. This paper fills this void by providing a framework to evaluate quantitatively the economic costs of joining the EMU. Using a two-country dynamic general equilibrium model with sticky prices we investigate the economic implications of the loss of monetary policy flexibility associated with the EMU for each country. The main contribution of our general equilibrium approach is that we can evaluate the effects of monetary policy in terms of welfare. Our findings suggest that these economies may experience sizable welfare losses as a result of joining the EMU. Results show that the cost associated with the loss of the monetary policy flexibility is higher in the presence of persistent government consumption shocks and small trade shares with the EMU.     

Money and Price Dispersion

We relax restrictions on the storage technology in a prototypical monetary search model to study price dispersion. In this case, buyers and sellers enter matches with potentially different willingness to trade. Across the distribution of possible bilateral matches, prices generally will differ even though agents have identical preferences and technologies. We provide existence conditions for a particularly simple equilibrium pattern of exchange. We prove that in the limiting case where search frictions are eliminated, equilibrium prices are uniform. We also show that a higher initial money stock can raise the average price level and increase price dispersion.     

Monetary equilibrium and price stickiness: Causes,consequences and remedies

We assess monetary equilibrium theory by focusing on its foundation—price stickiness—and answer several ancillary questions. Prices are sticky at times. Contra monetary equilibrium theorists, this is not a reason to advocate an issuance of fiduciary media to counteract the effects of a sluggish price adjustment process. Issuances of fiduciary media will breed negative effects, primarily via wealth redistributions, faulty interest rate signals and exacerbated business cycles. Allowing the price level to adjust to maintain monetary equilibrium provides for fewer detrimental effects than adjusting the supply of credit.     

Asset prices,nominal rigidities,and monetary policy

Should monetary policy respond to asset prices? This paper analyzes this question from the vantage point of equilibrium determinacy. A central bank responding to asset prices is indirectly responding to firm profits. In a model with sticky prices, increases in inflation tend to lower firm profits so that a central bank responding to share prices implicitly weakens its overall response to inflation. This is the novel source of equilibrium indeterminacy highlighted in the paper.     

Endogenous innovation under New Keynesian dynamic stochastic general equilibrium model

This paper constructs an endogenous growth model using the framework of New Keynesian dynamic stochastic general equilibrium models. We incorporate the Schumpeterian approach that generates seemingly sticky prices and reinterpret the Calvo mechanism from the perspective of Bertrand competition and successful entrepreneurs. Our results demonstrate that both positive productivity shocks and endogenous innovation have a negative effect on subsequent endogenous innovation. These self-destructive effects of endogenous innovation might account for the IT productivity paradox and productivity slowdown seen in advanced countries. Furthermore, it is shown that there are both neutral and non-neutral properties of monetary policy shocks. They are neutral in terms of the growth effect, but non-neutral in terms of the level effect. In particular, expansionist monetary policies are desirable to facilitate endogenous innovation.     

Relative importance of sticky prices and sticky information in price setting

The relative importance of price and information stickiness in price setting to model and explain inflation dynamics is investigated in this study. A structural model of inflation is developed and used which combines two different models of price setting behavior: the sticky price model of the New Keynesian literature and the sticky information model of Mankiw and Reis. In a framework similar to the Calvo model, I assume that there are two types of firms. One type of firm chooses its prices optimally through forward-looking behavior—as assumed in the sticky price model. It uses all available information when deciding on prices. The other type of firm sets its prices under the constraint that the information it uses is “sticky”—as assumed in the sticky information model. It collects and processes the information necessary to choose its optimal prices with a delay. This leads to the sticky price–sticky information (SP/SI) Phillips curve that nests the standard sticky price and sticky information models. Estimations of this structural model show that both sticky price and sticky information models are statistically and quantitatively important for price setting. However, the sticky price firms make up the majority of the firms in the economy. The results are robust to alternative sub-samples and estimation methods.     

Learning and Equilibrium Selection in a Monetary Overlapping Generations Model with Sticky Prices

We study adaptive learning in a monetary overlapping generations model with sticky prices and monopolistic competition for the case where learning agents observe current endogenous variables. Observability of current variables is essential for informational consistency of the learning setup with the model setup but generates multiple temporary equilibria when prices are flexible and prevents a straightforward construction of the learning dynamics. Sticky prices overcome this problem by avoiding simultaneity between prices and price expectations. Adaptive learning then robustly selects the determinate (monetary) steady state independent from the degree of imperfect competition. The indeterminate (non-monetary) steady state and non-stationary equilibria are never stable. Stability in a deterministic version of the model may differ because perfect foresight equilibria can be the limit of restricted perceptions equilibria of the stochastic economy with vanishing noise and thereby inherit different stability properties. This discontinuity at the zero variance of shocks suggests one should analyse learning in stochastic models.