工资粘性、经济波动与货币政策模拟——基于DSGE模型的分析

本文在BGG模型的基础上,引入了工资粘性,使之成为综合考虑价格粘性、金融加速器效应以及工资粘性的DSGE模型,我们模拟并比较了中国不同货币政策的影响。贝叶斯估计结果验证了中国工资粘性的存在,说明中国劳动力市场的配置尚存在改善的余地。货币政策模拟结果显示,价格型货币政策效应较强但持续期较短,而数量型货币政策效应较为温和但影响相对持久,央行需注重价格型货币政策与数量型货币政策的合理搭配与使用。     

Real rigidities, productivity improvements and investment dynamics

The theoretical literature on business cycles predicts a positive investment response to productivity improvements, a prediction we question from theoretical and empirical perspectives. We show that a short-term negative response of investment to a positive technology shock is consistent with a reasonably parameterized new Keynesian dynamic stochastic general equilibrium (DSGE) model in which firm-specific capital introduces an additional real rigidity, and monetary policy is not fully accommodative. Employing Bayesian techniques, we provide evidence that permanent productivity improvements have short-term, contractionary effects on investment. Although this result can be obtained from both firm-specific and rental capital models, only in the case of the former is the average price duration in line with the microeconometric evidence.     

ELUSIVE PERSISTENCE: WAGE AND PRICE RIGIDITIES,THE NEW KEYNESIAN PHILLIPS CURVE AND INFLATION DYNAMICS

Abstract We review the main New Keynesian inflation equations that have arisen as a result of aggregation from individual firms' price rigidities. We find that, on the whole, they cannot account for inflation persistence, a key feature of the empirical dynamics of inflation, and with important policy implications. The only exceptions seem to be when indexation is allowed in price setting or when price stickiness is combined with wage rigidity and staggering.     

A New Keynesian model with staggered price and wage setting under learning

This paper provides a study of the implications for economic dynamics when the central bank sets its nominal interest rate target in response to variations in wage inflation. I provide results on the existence, uniqueness, and stability under learning of rational expectations equilibrium for alternative specifications of the manner in which monetary policy responds to economic shocks when nominal rigidities are present. Monopolistically competitive producers set prices via staggered price contracts, and households set nominal wages in the same fashion. In this setting, the conditions for determinacy and learnability of rational expectations equilibrium differ from a model where only prices are sticky. I find that when the central bank responds to wage and price inflation and to the output gap, a Taylor principle for wage and price inflation arises that is related to stability under learning dynamics. In other words, a moderate reaction of the interest rate to wage inflation helps to avoid instability under learning and indeterminacy.     

Stock prices and monetary policy shocks: A general equilibrium approach

Empirical literature documents that unexpected changes in the nominal interest rates have a significant effect on real stock prices: a 100-basis point increase in the nominal interest rate is associated with an immediate decrease in broad real stock indices that may range from 2.2 to 9%, followed by a gradual decay as real stock prices revert towards their long-run expected value. We assess the ability of a general equilibrium New Keynesian asset-pricing model to account for these facts. We consider a production economy with elastic labor supply, staggered price and wage setting, as well as time-varying risk aversion through habit formation. We find that the model predicts a stock market response to policy shocks that matches empirical estimates, both qualitatively and quantitatively. Our findings are robust to a range of variations and parametrizations of the model.     

Price Inflation in the UK: Has Anything Changed?

Since leaving the ERM, the UK has had low inflation while unemployment has fallen substantially. This suggests that wage and price behaviour may have changed over the recent past. In this article, Ken Coutts and Brian Henry review the evidence for such change, particularly in pricing behaviour, but find little convincing evidence of a major structural shift. Rather, low inflation can be attributed to the effect of weak demand and low capacity utilisation on prices (and wages) which are larger and longer lasting than is generally believed, together with beneficial effects from low world inflation. On leaving the ERM, the government also instituted a classic combination of expenditure-switching and expenditure-reducing policies which played an essential part in promoting recovery without increasing inflation.     

Assessing DSGE model nonlinearities

We develop a new class of time series models to identify nonlinearities in the data and to evaluate DSGE models. U.S. output growth and the federal funds rate display nonlinear conditional mean dynamics, while inflation and nominal wage growth feature conditional heteroskedasticity. We estimate a DSGE model with asymmetric wage and price adjustment costs and use predictive checks to assess its ability to account for these nonlinearities. While it is able to match the nonlinear inflation and wage dynamics, thanks to the estimated downward wage and price rigidities, these do not spill over to output growth or the interest rate.     

Firm-specific wage growth and changes in the labor market for managers

This paper analyzes recent changes in the employment relationships between managers and firms. In both Becker's and Lazear's models of firm-specific wage growth, compensation is deferred from early in an employee's tenure with a firm until later in the contract. The deferred compensation bonds the worker to the firm. Based on cross-sectional data from Current Population Surveys, rates of firm-specific wage growth are estimated for the managerial labor market. The findings show that the rate of wage growth that is firm-specific for managers in manufacturing industries declined significantly during the early 1980s. It is estimated, for example, that a manager with 12 years of tenure in a manufacturing firm enjoyed, on average, a 25% wage premium in 1979 over an otherwise similar manager who was a new hire in a firm. By 1983 the firm-specific wage premium for a manager with 12 years of tenure was only 5%. These changes represent a significant reduction in the strength of the employment bond between firms and managers, and a reduction in the incentive effects previously enjoyed by firms from the use of deferred-compensation schemes. This change is consistent with the significant increases in the displacement rates of managers that occurred during the 1980s.     

The Outlook for Wages

Price inflation is on the way down The most dramatic evidence of this is the fall in retail price inflation as the VAT effect comes out of the index. But as the Charts overleaf show, there are clear signs of a fall in inflation rates in wholesale output prices and, more strikingly still, in manufacturers' input prices.
This may be good news for consumers, but so far any reduction in inflation has been chiefly at the expense of profit margins as price rises have fallen below the increase in wage costs. The question for the immediate future is whether the fall in price inflation will now lead to a fall in wage inflation     

Europeanization or globalization? Transnational wage bargaining and the distribution of activity in European labor markets

This paper investigates the impact of globalization on labor markets, in terms of wage inflation and the distribution of activity across regions. Specifically, we study the effects of aggregation in the labor markets on the distribution of employment and inflation pressures, where there are differences in market structures and transmission mechanisms underpinned by relatively immobile labor. To demonstrate these ideas, we take the European experience as a “laboratory” to show what can be expected from globalization in the labor markets in practice. Using models of wage leadership vs. locational competition, we examine the extent and strength of aggregation effects on labor market costs using a sample of data from 1983 to 2007 which covers the period of the creation of the Euro. We find that the aggregation effect has decreased significantly since the start of EMU, improving the trade-off between inflation and unemployment. At the same time, while Germany played an important role in the run-up to EMU in terms of wage leader, its role has now decreased and been replaced by globalization forces. This implies increased locational competition in terms of wage formation. We demonstrate this with the emerging role of the US as the benchmark for wage setting in Europe.     

Wage–hours contracts,overtime working and premium pay

This paper offers a contract-based theory to explain the determination of standard hours, overtime hours and overtime premium pay. We expand on the wage contract literature that emphasises the role of firm-specific human capital and that explores problems of contract efficiency in the face of information asymmetries between the firm and the worker. We first explore a simple wage–hours contract without overtime and show that incorporating hours into the contract may itself produce efficiency gains. We then show how the introduction of overtime hours, remunerated at premium rates, can further improve contract efficiency. Our modelling outcomes in respect of the relationship between the overtime premium and the standard wage rate relate closely to earlier developments in hedonic wage theory. Throughout, we emphasise the intuitive reasoning behind the theory and we also supply relevant empirical evidence. Mathematical derivations are provided in an Appendix.     

Calvo vs. Rotemberg in a trend inflation world: An empirical investigation

This paper estimates and compares New-Keynesian DSGE monetary models of the business cycle derived under two different pricing schemes—Calvo (1983) and Rotemberg (1982)—under a positive trend inflation rate. Our empirical findings (i) support trend inflation as an empirically relevant feature of the U.S. great moderation; (ii) provide evidence in favor of the statistical superiority of the Calvo setting; (iii) point to a substantially lower degree of price indexation under Calvo. We show that the superiority of the Calvo model is due to the restrictions imposed by such a pricing scheme on the aggregate demand equation.     

The effects of dollar appreciation on sectoral labor market adjustments: Theory and evidence

We examine the extent to which exchange rate fluctuations affect sectoral employment and wages in the United States. We introduce a theoretical rational expectation model that decomposes movements in the exchange rate into anticipated and unanticipated components. The model demonstrates the effects of demand and supply channels on the response of the nominal wage and labor employment to changes in the exchange rate. The evidence indicates that the deflationary effect dominates on industrial nominal wage in manufacturing and transportation industries in the face of dollar appreciation. More importantly, there is evidence of a decrease in employment growth in several industries in response to dollar appreciation, which is statistically significant in construction and at the aggregate level. This evidence is consistent with a decrease in labor demand given the loss of competitiveness of U.S. products following dollar appreciation. There are negative effects of dollar appreciation on labor market conditions in the United States. Nonetheless, dollar appreciation is consistent with an increase in employment growth in the mining sector where the share of imports is the largest among U.S. industries.     

Firm-specific Human Capital Accumulation: Evidence from Brazil*

We introduce firm-specific returns to experience and tenure into a standard two-way fixed effects model, show that they are separately identified under the standard exogenous mobility assumption and with sufficient between firm mobility, and provide a new evidence on heterogeneity of returns to experience and tenure across firms using the administrative data from Brazil over the years 1999–2014. We document that (1) returns to tenure are not strongly related to firm wage premia, (2) returns to experience are strongly negatively correlated with firm wage premia, (3) the relationship between firm wage premium and return to experience is stronger for ‘blue collar’ firms.     

Modelling the inflation process in transition economies: Empirical comparison of Poland, Hungary and Czech Republic

This paper starts from the observation that inflation in transition economies appears to be persistently high and volatile and attempts to provide some empirical characterisation of the inflation process in three such transition economies: Poland, Hungary and Czech Republic. We first consider the role of monetary growth as a major causal factor for inflation in these economies, and argue that the evidence provides rather weak support for the causal relationship. We then propose a transition economy cost-plus model and estimate this using the equilibrium-correction modelling (ECM) strategy augmented by introduction of a number of transitory factors and changes in the internal structure of the real economy which we believe may have had a significant impact on inflation in these economies. We show that this approach enables us to account for long-run inflation in these economies from the early 1980s to the present despite the turbulence of the latter part of the sample period. Our results support wage and exchange rate based inflation policies.     

On firm-level,industry-level,and aggregate employment fluctuations

Employment fluctuations are examined, at different levels of aggregation, in a model with firm-specific hiring decisions due to search frictions and sticky pricing. The results indicate that firm-level employment dispersion rises with higher price stickiness and higher demand elasticity, whereas it falls with more convexity of search costs and with a higher labor supply elasticity. Industry-level employment is more volatile and less procyclical than aggregate employment, and a larger industry size reduces volatility and raises co-movement with output. The calibrated model is able to match the volatility, autocorrelation and cyclical correlation of US industry-level employment when incorporating firm-specific technology shocks.     

Equal-treatment policy in a random search model with taste discrimination

We consider a search model of the labor market with two types of equally productive workers and two types of firms, discriminators and non-discriminators. Without policy intervention, there is wage dispersion between and within the two worker groups, but all wage differences become negligible when the taste for discrimination is small. We analyze the effect of an equal-pay policy, both in combination with affirmative action and without. When equal opportunity of hiring cannot be enforced, wage dispersion increases and wages for minority workers fall substantially relative to laissez faire. Sometimes also the wage gap between worker groups widens in response to the policy.     

Firm heterogeneity and wages in unionised labour markets: Theory and evidence

In many countries wages are set in two stages, where industry-level collective bargaining is followed by firm-specific arrangements determining actual paid wages as a mark-up on the industry wage floor. What explains the wage set in each of these stages? In this paper we show that both the industry wage floor and the average wage cushion are systematically associated with the degree of firm heterogeneity in the industry: The former (latter) is negatively (positively) associated with the productivity spread. Furthermore, since the response of the wage floor dominates that of the wage cushion, workers in more heterogeneous industries tend to get lower actual paid wages. These conclusions are reached in a model of Cournot oligopoly with firm productivity heterogeneity and a two-tiered wage setting system. They are then confirmed by administrative data covering virtually all workers, firms and collective bargaining agreements of the Portuguese private sector for the period 1991–2000.     

Business cycles and wage rigidity

In this paper, we analyze the impact of downward wage rigidity on the labor market dynamics. We shows that imposing downward wage rigidity in a matching model with cyclical fluctuations in productivity, endogenous match-destruction, and on-the-job search, quits are procyclical and layoffs countercyclical. Using the European Community Household Panel (ECHP), we provide evidence that downward wage rigidity is empirically relevant in ten European countries. Finally, we show that layoffs are countercyclical and quits are procyclical, as predicted by the model.     

On the industry experience premium and labor mobility

There is evidence that experience premium differs across industries. We propose a theoretical model for explaining these differences. We assume that labor mobility brings external knowledge to the firm, which increases its productivity. We find that industry experience premium is decreasing in inter-firm mobility costs, while increasing in the learning-by-doing and the technological level of the industry. Moreover, it has a U-shape relationship with the level of learning-by-hiring, the substitutability between different types of experienced workers and the variety of knowledge in the industry. Results are consistent with the empirical findings that R&D-intensive industries have steeper wage profiles.