Central Bank Independence and the Cost of Disinflation: Why the Wage Contracts Length Matters?

Recent empirical contributions demonstrate that countries with less independent central banks enjoy lower output losses during disinflationary cycles. To explain these somewhat surprising empirical findings, some authors suggest that independent central banks probably face a flatter short-run Phillips curve. In this paper, we provide both theoretical and empirical arguments to rationalize this intuition. We demonstrate that, since central bank independence reduces the mean inflation rate and its variance, wage setters opt for a lower degree of nominal wage indexation leading to more wage and price inertia and, thus, to a flatter short-run Phillips curve. Consequently, this paper put forward a channel of positive influence of central bank independence on the sacrifice ratio through its impact on nominal wage indexation. Empirical tests, performed using a sample of 19 OECD countries during the 1960–1990 period, show that these theoretical results hold also empirically.     

NOMINAL WAGE INDEXATION,QUASI‐EQUILIBRIA AND REAL WAGE DYNAMICS

In contrast to the traditional static approach to indexation, this paper analyses the dynamic consequences for real wages of the mechanism that links nominal wages to inflation. Revisiting a contribution by Dehez and Fitoussi on macroeconomic fluctuations , I analyse a monetary overlapping generations small open economy in which full indexation is interpreted as the occurrence of a dynamic ‘quasi‐equilibrium’. In the suggested framework, the nominal wage is linked to the inflation rate by a specific indexation formula whose shape relies on unions' bargaining positions. Assuming a constant peg for the real interest rate and the superneutrality of money, I show that the economy has a unique long‐run quasi‐equilibrium allocation whose stability depends only on the behaviour of the monetary authority. Moreover, I show how the operating of a ‘wage‐aspiration effect’ might lead to the persistence of involuntary unemployment.     

Partial inflation indexation and long-run inflation targeting in a growing economy: A comparison of Calvo and Rotemberg pricing models

The observed 2% long run inflation target in most developed industrial nations is in variance with the zero or negative optimal inflation rates predicted by prominent monetary theories. Using a calibrated simple New-Keynesian model with endogenous growth and nominal rigidity, we compare two price setting environments of Calvo (1983) and Rotemberg (1982). In our growth model, the steady state welfare maximizing inflation takes into account the growth effect as well as the price distortionary effects of inflation. The long-run welfare maximizing trend inflation could be positive in economies with nominal rigidity in the form of partial inflation indexation and price stickiness. A higher degree of inflation indexation lowers the steady state price distortion in the Calvo model and steady state price adjustment cost in Rotemberg model and raises the long run optimal inflation. Since the productive inefficiency caused by partial inflation indexation is higher in Calvo economy compared to Rotemberg, the long run optimal trend inflation is higher in Rotemberg than in Calvo. In both models, a two percent long run inflation target is attainable for a reasonable degree of inflation indexation.     

WELFARE COSTS OF SHIFTING TREND INFLATION: STAGGERED WAGE AND PRICE CONTRACTS

We develop a New Keynesian model featuring staggered price and wage contracts to study welfare costs of exogenous variations in trend inflation. The analyses show that the consequences of constant positive trend inflation and shifting trend inflation are severe, especially when trend inflation is high. Among two channels, staggered wage contracts play a vital role in transmitting adverse impacts of constant and shifting trend inflation into the economy. Without the staggered wage channel, these costs are modest. We also conduct exercises to examine the sensitivity of welfare costs to a wide range of plausible parameters. The results show that if the price and wage friction are sufficiently large, the price and wage indexation level are sufficiently small, or there is upward biased trend inflation process, the welfare costs become larger.     

The U.S. inflation process: Does nominal wage inflation cause price inflation,vice-versa,or neither?

Low unemployment has revived concerns about accelerated inflation. This paper examines the relationship between price and nominal wage inflation. It finds that it varies by business cycle. Prior to the great oil shock of 1973, price and nominal wage inflation were unconnected in a Granger-causal sense. In the 1970s, wage inflation caused price inflation. In the 1980s, the relationship reversed and price inflation caused nominal wage inflation. In the 1990s, the pattern has changed again, and there is some weak evidence of bidirectional causality between wages and PPI inflation. However, wages continue to have no impact on CPI inflation, which is widely viewed as one of the Fed's target variables. This suggests that wage inflation should be de-emphasized as a monetary policy information variable.     

Does wage-inflation targeting complement foreign exchange intervention? An evaluation of a multi-target,two-instrument monetary policy framework

We assess the inclusion of wage inflation as an intermediate target of an emerging central bank using a dynamic stochastic general equilibrium model with sticky wages and prices calibrated for the South Korean economy. The model includes wage inflation as an additional target jointly with domestic price inflation and the output gap in a Taylor- type interest rate rule operating with a sterilized foreign exchange (FX) intervention rule. Our results show a complementary relationship between wage inflation targeting and price inflation targeting. That is, by supplementing price inflation targeting with wage inflation targeting, welfare improves for cases with and without sterilized FX intervention. When intervention is in place, wage inflation targeting has the added advantage of reducing the volatilities of nominal exchange rate and foreign exchange reserves thereby promoting a more sustainable conduct of FX intervention.     

The Economic Situation

Throughout the first nine months of 1976 the Australian economy has remained virtually stagnant, with output and employment increasing only marginally and unemployment rising also. With the government following a severely contractionary policy in an attempt to break inflation the economy seems poised for a further modest downturn in the next nine months so that a self-sustaining recovery from the current recession does not seem to be in prospect before the second half of 1977. On the basis of existing policies our forecasts indicate a rate of growth of real GDP of only about 1.0 per cent in 1976–77, implying a further significant rise in unemployment during the financial year. There have been some hopeful signs in recent months of a reduction in inflation — the consumer price index increases in the first three quarters of 1976 were modest and wage rate increases remain closely in line with the wage indexation guidelines — but three factors have emerged to cast doubt on whether this improving trend will continue. The first is the effect of the recent drought on prices of foodstuffs, particularly meat, and the second is the expected 1.5 to 2.0 per cent increase in the consumer price index as a result of the changes in the method of financing hospital and medical services. These two factors mean that the December quarter increase in the consumer price index may be more than 5 per cent, threatening a further stimulus to inflation in 1977. Thirdly, present government policies could easily lead to a breakdown of the wage indexation system and a return to some form of collective bargaining over wage rates. Assuming nevertheless, a de facto continuation of partial indexation in 1977, we expect increases in male award wages and male average earnings of about 13 per cent during 1977, these increases being similar to those during 1975 and 1976 but much below the increases of 36 per cent and 28 per cent respectively recorded during 1974. Our forecasts also indicate increases in the consumer price index of 14 per cent during 1976 and 11 per cent during 1977, following increases of 16.3 per cent and 14.0 per cent during 1974 and 1975 respectively. These forecasts indicate that the government's fiscal, monetary, exchange rate and wage policies are likely to come under heavy challenge early in 1977, and decisions taken at that time are likely to be major determinants of economic developments in Australia in the next few years. The Institute would again urge a shift to a co-operative package including full wage indexation, with cuts in indirect taxes and public sector charges to wind down inflation and expand the economy. On current indications, labour productivity will be no higher in 1976–77 than in 1973–74, because of the weakness of total output, so that the whole burden of wage increases in that three year period has fallen on unit costs of production. It is our belief that the twin problems of inflation and unemployment will only be defeated in Australia when both cuts in indirect or direct taxes and increases in productivity are applied to reducing inflation in the context of an orderly system of wage and price determination.     

The Australian Economy after Devaluation

Before taking account of the measures announced by the government on and after 28 November 1976, the latest statistical information suggests that the economy was broadly on the course outlined in detail in Review 3'76. Both business investment and consumer demand appear to have fallen in real terms, seasonally adjusted, in the last few months. With public sector demand also weak the economy was moving Into a new period of modest decline in overall activity, so that real non-farm GDP was expected to grow by 1 to 2 per cent in 1976–77 and by only 1 per cent in calendar 1977. The rate of inflation has moderated in the first three quarters of 1976 and, in spite of the large increase in the consumer price index expected in the December quarter and the granting of full percentage wage indexation for the September quarter, the rate of inflation seemed likely to be lower in 1977 than in 1976.     

Inertial inflation, indexation and price stickiness: evidence from Brazil

This paper evaluates the inertial inflation hypothesis for Brazil. The hypothesis posits that indexation created a feedback mechanism such that one-time supply shocks were fully transmitted into permanent changes in inflation. A theoretical model is used to show that this outcome is based on the assumption of perfect price flexibility. However, with price stickiness indexation does not produce inertial inflation. The degree of inertia is then compared for two periods: one without indexation (1945–1963), and one with indexation (1969–1985). Finally, vector-autoregressive representations are estimated for the latter period, allowing for price stickiness. The empirical results do not support the hypothesis.     

A DSGE-VAR model for forecasting key South African macroeconomic variables

The paper develops a Small Open Economy New Keynesian DSGE-VAR (SOENKDSGE-VAR) model of the South African economy, characterised by incomplete pass-through of exchange rate changes, external habit formation, partial indexation of domestic prices and wages to past inflation, and staggered price and wage setting. The model is estimated using Bayesian techniques on data from the period 1980Q1 to 2003Q2, and then used to forecast output, inflation and nominal short-term interest rate for one-to eight-quarters-ahead over an out-of sample horizon of 2003Q3 to 2010Q4. When the forecast performance of the SOENKDSGE-VAR model is compared with an independently estimated DSGE model, the classical VAR and six alternative BVAR models, we find that, barring the BVAR model based on the SSVS prior on both VAR coefficients and the error covariance, the SOENKDSGE-VAR model is found to perform competitively, if not, better than all the other VAR models.     

Wage indexation and the monetary policy regime

We estimate a New Keynesian wage Phillips curve for a panel of 24 OECD countries and allow the degree of wage indexation to past inflation to vary according to structural characteristics. We find that the degree of wage indexation is significantly lower for countries with an inflation target. However, this effect vanishes when we control for the degree of goods market competition. By contrast, more goods market competition is consistently associated with lower wage indexation. This robust finding puts into question whether embedding a constant degree of wage indexation in standard DSGE models is truly structural.     

Inflation in Argentina during the 2000s

The paper presents a neo-structuralist econometric analysis of the monthly inflation rates. The model breaks down the CPI into different components based on their price-formation mechanisms. The basic breakdown defines three components: PFLEX (fruits and vegetables, 3.6% of the basket), PREGUL (prices regulated by the government, 20.1% of the basket) and PFIX (the rest of goods and services, 76.3% of the basket). PFIX is the focus of the econometric analysis while PFLEX and PREGUL are considered exogenous. The explanatory variables are the monthly rates of: the price of bovine cattle at the domestic market, the international soy price, the price by ton of imported intermediate goods, the nominal exchange rate, the average wage of workers that are registered in Social Security and the productivity, measured by the GDP by employed worker. There was an informal indexation mechanism in the labor market. Average monthly wages rose at annual rates that were almost always higher than the sum of past annual inflation plus the annual increase in productivity. The over-indexation of the unit labor cost was the main inflationary factor in the period. The inertial component, represented in the model by the previous monthly rate, determines 60% of the current rate.     

Coordination versus flexibility in wage formation: a focus on the nominal wage impact of productivity in Germany,Greece, Ireland,Portugal, Spain and the United States

Wage coordination between countries of the European Monetary Union (EMU) aims at aligning nominal wage growth with labour productivity growth at the national level. We analyse the developments in Germany, the EMU’s periphery countries Greece, Ireland, Portugal and Spain along with the United States over the period 1980 to 2010. Apart from the contribution of productivity to nominal wages, we take into account the contributions of prices, unemployment, replacement rates and taxes by means of an econometrically estimated nonlinear equation resulting from a wage bargaining model. We further study the downward rigidities of nominal wages. The findings show that in past times of low productivity, price inflation and reductions in unemployment still put significant upward pressure on nominal wage growth. The periphery countries are far from aligning nominal wage growth with productivity growth. German productivity is a major wage determinant, but surely not the only one. Within the context of a free bargaining process between employers and labour unions, policy-makers can effectively use the replacement rate to steer the nominal wages outcome.     

On the welfare implications of nominal GDP targeting

This paper examines the welfare implications of a nominal GDP growth targeting rule, a nominal GDP level targeting rule, and inflation targeting regime in a New Keynesian model featuring positive trend inflation, two measures of welfare, and both high and low growth environments. The paper finds that (i) in general, nominal GDP growth targeting dominates other rules with changes in all dimensions; (ii) nominal GDP growth targeting framework is superior to the level targeting regime for most scenarios; (iii) inflation targeting is preferred to nominal GDP level targeting regime, but to minimize short-run fluctuations, the latter is advantageous; (iv) nominal GDP level targeting may be desirable only in a low growth environment with both low inflation indexation and consumption equivalence criteria. The simulation results provide solid evidence to policy makers on the desirability of nominal GDP growth targeting.     

Wage bargaining and shock sensitivity of a small open economy

This paper analyzes the effects of centralized bargaining over a nominal wage (indexation) rule on a small open economy with fixed exchange rates. It is shown that the relative bargaining power of the confederation of employers and the union, respectively, affects not only the level of the endogenous variables but also their reaction to exogenous disturbances. If the union's power exceeds a critical value, positive aggregate demand shocks increase unemployment since the actual nominal wage rises more than the market clearing one. Moreover, if the union's power is sufficiently close to its upper bound, the overreaction of wages becomes so large that positive aggregate demand shocks even lead to a decrease in output and employment, i.e., the multipliers become negative.     

Evidence on the effects of inflation on price dispersion under indexation

Distortionary effects of inflation on relative prices are the main argument for inflation stabilization in macro models with sticky prices. Under indexation of non-optimized prices, those models imply a nonlinear and dynamic impact of inflation on the cross-sectional price dispersion (relative price or inflation variability, RPV). Using US sectoral price data, we estimate such a relationship between inflation and RPV, also taking into account the endogeneity of inflation by using two- and three-stage least-squares and GMM techniques, which turns out to be relevant. We find an effect of (expected) inflation on RPV, and our results indicate that average (??trend??) inflation is important for the RPV?Cinflation relationship. Lagged inflation matters for indexation in the CPI data, but is not important empirically in the PPI data.     

Cyclical implications of indexing the minimum wage

Macroeconomic implications of proposals to index the minimum wage are examined in a two-sector labor-market model with random aggregate demand disturbances. Traditional policy, which sets the nominal minimum wage for several periods before reestablishing its real value, increases both the amplitude and persistence of cyclical movements in employment. Full indexation, by reducing the amplitude of cyclical fluctuations in employment, will improve the allocative performance of low wage market empirical analysis indicates that modest but statistically significant fluctuations in employment result from the process of periodically setting the minimum wage. These effects are most pronounced for youths. Overall, the empirical results suggest that indexation can result in a small increase in efficiency.     

Testing price equations

How inflation and unemployment are related in both the short run and long run is perhaps the key question in macroeconomics. This paper tests various price equations using quarterly U.S. data from 1952 to the present. Issues treated are the following. (1) Estimating price and wage equations in which wages affect prices and vice versa versus estimating “reduced-form” price equations with no wage explanatory variables. (2) Estimating price equations in (log) level terms, first difference (i.e., inflation) terms, and second difference (i.e., change in inflation) terms. (3) The treatment of expectations. (4) The choice and functional form of the demand variable. (5) The choice of the cost-shock variable. The results suggest that the best specification is a price equation in level terms imbedded in a price-wage model, where the wage equation is also in level terms. The best cost-shock variable is the import price deflator, and the best demand variable is the unemployment rate. There is some evidence of a nonlinear effect of the unemployment rate on the price level at low values of the unemployment rate. Many of the results in this paper are contrary to common views in the literature, but the empirical support for them is strong.     

Expected inflation and the optimal number of nominal wage rate revisions

A neglected aspect of wage contracts, namely the number of times that the nominal wage rate will be revised during the course of a non-indexed contract, is considered. Theory and evidence suggest that the optimal number of revisions depends on the cost of each revision, expected inflation and contract length.     

Demand Shift across US Industries and the Stabilizing Function of Nominal Wage and Price Flexibility.

Nominal wage and price adjustments in response to demand shocks are likely to determine industrial output variability. The direction of this relationship is complicated, however, by demand and supply factors. The empirical investigation across a sample of private industries in the United States produces the following evidence. Price flexibility moderates the response of the output supplied to a given shift in industrial demand. Similarly, nominal wage flexibility moderates, although insignificantly, the output response to a given shift in industrial demand. The size of industrial demand shifts dominates, however, supply-side constraints in differentiating output fluctuations across industries. While price flexibility moderates shifts in industrial demand in response to aggregate demand shocks, these shifts are larger the higher the nominal wage flexibility across industries. The combined supply and demand effects differentiate the stabilizing function of nominal wage and price flexibility. Nominal wage flexibility increases output fluctuations in response to aggregate demand shocks. In contrast, output fluctuations are smaller the larger the price adjustment to demand shocks across industries. Given the endogeneity of price flexibility, it is necessary to control for variation in demand variability in order to reveal the stabilizing effect of price flexibility on output across industries.