Wages and prices: Are workers fully compensated for cost of living differences?

This paper investigates the equilibrium relationship between wages and prices across labor markets. Of central interest is the extent to which workers receive higher wages to compensate for differences in the cost of living. According to the spatial equilibrium hypothesis, the utility of homogenous workers should be equal across labor markets. This implies that controlling for amenity differences across areas, the elasticity between wages and the general price level across areas should equal one, at least under certain conditions. I test this hypothesis and find that the predicted relationship holds when housing prices are measured by rents and the general price level is instrumented to account for measurement error. When housing prices are measured by housing values, however, the wage-price elasticity is significantly less than one, even using instrumental variables. Rents reflect the price paid for housing per unit of time and are arguably the superior measure. Thus, findings in this essay provide support for the full compensation hypothesis. These findings also have important implications for researchers estimating the implicit prices of amenities or ranking the quality of life across areas.     

Wages,Prices and Politics: Evidence from Norway

This paper studies the empirical relevance of the close ties between a central trade union and the social democratic political party using time series data for Norway. Using a structural wage-price model we estimate that changing from a bourgeois to a social democratic government reduces manufacturing wages in the long run by 2.3 percent. This result is consistent with a wage bargaining model augmented by political preferences of the union leaders. Private service wages are not directly affected by government type, but wage spillover effects imply that the long-run dampening effect in the private service sector is around 2 percent. The results also support the proposition of the Scandinavian model of inflation that the traded goods sector is the wage leader.     

A small linear model of wage- and price-inflation in the Norwegian economy

This paper presents a model of inflation in a small open economy which features both wage-wage linkages and a wage-price spiral. Hence we have a simultaneous structure which contains the conventional Scandinavian model of inflation as a special case. Full system estimation results are reported. Great emphasis is placed on data coherency and on parameter stability. One interesting finding is that both wage growth and the wage level in the exposed (E)-sector are strongly influenced by the outside wage. This contradicts the predictions of the Scandinavian model, which defines the wage-leading role of the E-sector by the absence of outside wage effects in E-sector wage formation. Another result is that the speed of adjustment to exogenous shocks is greater for prices than for wages. This finding may be important in explaining real wage flexibility, which is often seen as the hallmark of low unemployment economies such as the Norwegian.     

Wage and Price Inflation in Poland in the Period of Transition: The Cointegration Analysis

The paper focuses on the long run relationships between wages, prices and labour productivity in the Polish economy by applying recent developments in the field of multivariate cointegration analysis. We followed modeling strategy which is suggested by Greenslade et al. (1999) and present all stages of the analysis which leads to the fully economically identified system of equations representing long run relationships. The investigation is based on the quarterly data from 1992.1 to 1999.2 which covers the period of transition of the Polish economy from the centrally planned system towards the market one. Basing on the empirical results we can argue that wages (costs) were one of the main forces driving inflation in Poland during that period. Also labor productivity proved to be stimulated by the increase of the real wages. On the other hand the hypothesis concerning the relationship between wages and unemployment was rejected by the data.     

Long memory and structural breaks in hyperinflation countries

In this paper we examine the stochastic behavior of prices in hyperinflation countries by using a fractional integration test (Robinson 1994) that lends itself to incorporating structural breaks into the model. We focus on Argentina, Brazil, and Israel and find that when allowing for structural breaks, in the form of slope dummies (or squared slope dummies), the order of integration of the series decreases considerably. Especially in the case of Brazil, the degree of persistence of inflation seems to be less substantial than estimated in other studies, which might be interpreted as evidence against “heterodox” inflation stabilization. (JEL C22, E31)     

Labour Values,Prices of Production and the Effects of Income Distribution: Evidence from the Greek Economy

This paper explores the relationship between labour values, prices of production and changes in income distribution in an actual economy. For this purpose we use a linear model of production with circulating capital and homogeneous labour, assuming that wages are paid ex ante. On the basis of this model and data from input–output tables of the Greek economy for the period 1988–1997 we estimate the labour values and prices of production, which are normalized with the use of the Sraffian standard commodity and the actual output vector. Furthermore, we extend Steedman's polynomial approximation of prices of production to include the case where wages are paid ex ante and the accuracy of this approximation is tested with actual input–output data. Finally, we find that prices of production change as a result of hypothetical changes in income distribution more often than not in a monotonic way and in a few cases display curvatures that reverse the order between prices of production and values.     

Prices,wages, and import prices in Israel: 1970–1983

This paper presents an empirical investigation of the dynamics of prices, wages and import prices in a small open economy using data for Israel in the accelerating inflationary period of 1970–1983. The appropriateness of the specification of a price equation as a function of import prices and wages is critically reviewed using Sims's methodology. The main finding is that the only significant lags in the representation of the rate of change in prices, wages and import prices are the lags of the rate of change in prices (the rate of inflation). Other factors in the representation are attributed to market forces influencing real wages and the real exchange rate. Testing the correlation of the estimated VAR residuals leads to the conclusion that a short-term inflation equation specified as a function of present and past wages is not acceptable. A further decomposition of the VAR residuals presents evidence in favour the hypothesis that price shocks contribute to the explanation of the inflationary process in Israel. A rational expectation interpretation of the results is proposed, followed by some policy implications.     

Nonparametric simultaneous testing for structural breaks

In this paper we consider a regression model with errors that are martingale differences. This modeling includes the regression of both independent and time series data. The aim is to study the appearance of structural breaks in both the mean and the variance functions, assuming that such breaks may occur simultaneously in both the functions. We develop nonparametric testing procedures that simultaneously test for structural breaks in the conditional mean and the conditional variance. The asymptotic distribution of an adaptive test statistic is established, as well as its asymptotic consistency and efficiency. Simulations illustrate the performance of the adaptive testing procedure. An application to the analysis of financial time series also demonstrates the usefulness of the proposed adaptive test in practice.     

Trends in international commodity prices: Panel unit root analysis

The purpose of this paper is to examine the behavior of international commodity prices within the context of the Prebisch–Singer hypothesis. To this end, I utilize a panel unit root approach which is able to account for multiple structural breaks and cross-section dependency. The unit root analysis for 24 international commodity prices during the period 1900–2003 shows evidence in favor of the trend stationary process in the commodity prices. The results thereby imply that shocks to commodity prices are temporary in nature and tend to be corrected over time. The estimation of the trend stationary models indicates that the Prebisch–Singer hypothesis is not a universal phenomenon.     

Wage equations,wage curves and all that

This paper is concerned with the relationship between wages and unemployment. Using UK regions and individuals as the basis for our analysis, the following questions are investigated. First, is the wage equation a relationship between unemployment and wages or wage changes? Second, can we identify the relationship completely by looking at regional wages and regional unemployment or do regional wages depend on aggregate unemployment as well? Third, can we identify an upward sloping cross-section relationship between wages and unemployment corresponding to a zero migration condition? Finally, are wages influenced only by the current state of the labour market or do contracts lead to wages depending on labour market conditions in the last boom or upon entry into the job?     

An empirical analysis of mean reversion of the S&P 500’s P/E ratios

Numerous authors have suggested that the price-earnings (P/E) ratio can be used to predict the future movement of stock prices. Such arguments are based on the belief that P/E ratios are mean-reverting. However, are the S&P P/E ratios really mean reverting? A review of the literature finds arguments on both sides, but the issue of mean reversion has not been tested adequately. Using unit roots and multiple structural breaks, we explicitly show that the P/E ratio is stationary around multiple breaks, which means that it will eventually revert to some long-run means. This result supports evidence that high P/E ratios relative to the current long-run mean will be followed by slow growth in stock prices and/or high earnings growth.     

The London Business School with Gower Publishing

The theory of employment is reasonably well understood. Producers are confronted with a given level of aggregate demand. They decide how much they can profitably produce, and decide on the mix of capital and labour in response to a given set of relative prices. Over most of the post-war period variations in employment were accounted for mainly by variations in aggregate demand, but that situation changed dramatically during the 1970s. As unemployment has mounted, so has the interest in so-called supply-side explanations of the problem, since it has become obvious that an increase in employment on the scale required can hardly come from a demand stimulus alone. In our account of the 1980 recession, we tended to focus on profitability as a key element in the decision to supply. If the price of goods is too low relative to the price of the factors of production needed to produce them, then the supply of output will fall. In the 1980 recession the price of all the factors of production rose dramatically: real wages shot up following the Clegg awards; real interest rates were at record levels; and the price of energy had recently soared following the OPEC II oil shock. At the same time goods prices were being constrained by the government's counter-inflationary strategy, and most notably by a strong exchange rate. Under these circumstances a substantial proportion of firms, especially in the traded goods sector, found it unprofitable to continue producing. When unprofitable production lines were abandoned, the associated capital equipment was scrapped. These decisions, once taken, were for the most part irreversible even if, as must have happened in some cases, subsequent movements in factor prices would have made production profitable once again. We discussed this phenomenon in the April Forecast Release and showed that, on the assumption that capital-labour ratios had remained at their trend levels, some £25bn of capital equipment (at I980 prices) had been scrapped. The fact that manufacturing output and employment have remained far below their 1979 levels, even though total output at home and abroad is at or well above that level is, we believe, mainly due to this capital scrapping. The jobs in manufacturing will not be re-created - even though UK competitiveness has been restored to pre-1980 levels - until the capital stock is re-built. The scrapping phenomenon is important because it creates a link between employment and too-high real wages (or other factor costs) that is often ignored. In standard production theory a rise in real wages leads to the substitution of capital for labour and employment may fall (if the rive in real wages does not create a more than offsetting increase in aggregate demand). However, production theory is complicated by the fact that capital and labour are complements as well as substitutes. Since a large part of the nation's productive-capacity, once built, uses capital and labour in fixed proportions, a rise in real wages may render part of the existing capital stock uneconomic. High real wages thus destroy capital as well as jobs. In our April Forecast Release, in order to estimate the scale of the scrapping problem, we made the simplifying assumption that capital-labour ratios remained on trend. In practice they vary in line with movements in relative factor prices. In the present Forecast Release we look more closely at the role of factor prices. We find some evidence that changes in relative factor prices affect the capital-labour mix. However, the substitution elasticities are small. The conclusion of this analysis is that the job losses which resulted from too-high factor prices (mainly wages) during the recession cannot be quickly reversed.     

Fractional integration in daily stock market indices at Jordan's Amman stock exchange

Using daily data on five sectoral indices from 2006 to 2014, this paper aims to investigate the possibility of fractional integration in sectoral returns (and their volatility measures) at Jordan's Amman stock exchange (ASE). Empirical analysis, using the log-periodogram (LP) and local whittle (LW) based semi-parametric fractional differencing techniques suggest that all sectoral returns at ASE exhibit short memory. However, in the case of volatility measures, we found evidence of long memory. Following the recent literature that argues that structural breaks in a time series could also explain the presence of long memory, we tested the volatility measures for the presence of structural breaks. We found that long memory in some volatility measures could be attributed to the presence of structural breaks. Furthermore, using impulse response functions (IRF) based on ARFIMA, we found that shocks to sectoral returns at ASE exhibit short run persistence, whereas shocks to volatility measures display long run persistence.     

Testing the impact of educational expenditures on economic growth: new evidence from Latin American countries

This paper investigates the impact of educational expenditures on economic growth for 18 Latin American countries over the period 1970–2009 by using cointegration test procedure in the presence of two unknown structural breaks. Considering structural breaks is necessary for our analysis because of that Latin American countries implemented important reforms to expand their educational systems and these reforms may affect the cointegrating relationship. The findings indicate that there is evidence of cointegrating relationship between educational expenditures and economic growth for the considered countries except Chile, Guyana, Jamaica, Nicaragua, Paraguay, Peru and Uruguay. Another finding of the paper is that identified structural breaks refer to the educational reform periods of Latin American countries.     

The New Keynesian Phillips Curve and staggered price and wage determination in a model with firm-specific labor

We develop a DSGE model with firm-specific labor where wage and price setting are subject to Calvo-type staggering. This is in general an intractable problem due to complicated intertemporal dependencies between price and wage decisions. However, the problem is significantly simplified if we, in line with empirical evidence, assume that prices can be changed whenever wages are. We show that the price- and wage-setting relationships are substantially altered by the introduction of firm-specific labor. Specifically, the inflation response is substantially dampened, whereas the wage inflation response is increased as compared to models with freely mobile labor. These distinctive features of the model with firm-specific labor are supported by empirical evidence from a structural VAR.     

Multivariate-based Granger causality between financial deepening and poverty: the case of Pakistan

This paper deals with the empirical investigation of causal relationship between financial deepening, economic growth and poverty reduction using quarter frequency data in case of Pakistan over the period of 1972–2011. We applied the autoregressive distributed lag model bounds testing approach by incorporating structural breaks stemming in the series. The order of integration of the variables is examined by applying structural break unit root test. Our empirical exercise indicated that the long run relationship between financial deepening, economic growth and poverty reduction exists in case of Pakistan. The causality analysis implied that causality results are sensitive with the use of proxy for poverty reduction.     

An efficient Bayesian approach to multiple structural change in multivariate time series

This paper provides a feasible approach to estimation and forecasting of multiple structural breaks for vector autoregressions and other multivariate models. Owing to conjugate prior assumptions we obtain a very efficient sampler for the regime allocation variable. A new hierarchical prior is introduced to allow for learning over different structural breaks. The model is extended to independent breaks in regression coefficients and the volatility parameters. Two empirical applications show the improvements the model has over benchmarks. In a macro application with seven variables we empirically demonstrate the benefits from moving from a multivariate structural break model to a set of univariate structural break models to account for heterogeneous break patterns across data series.