On-the-job search, sticky prices, and persistence

Models of the monetary transmission mechanism often generate empirically implausible business fluctuations. This paper analyzes the role of on-the-job search in the propagation of monetary shocks in a sticky price model with labor market search frictions. Such frictions induce long-term employment relationships, such that the real marginal cost is determined by real wages and the cost of an employment relationship. On-the-job search opens up an extra channel of employment growth that dampens the response of these two components. Because real marginal cost rigidity induces small price adjustments, on-the-job search gives rise to a strong propagation of monetary shocks that increases output persistence.

Why have the dynamics of labor productivity changed?

The strength of the nascent economic recovery--and of the labor market--will depend importantly on labor productivity. By itself, faster productivity growth contributes to faster output growth. At the same time, stronger productivity gains allow firms to increase output without adding workers. Some analysts believe that faster productivity growth contributed to the “jobless recoveries” after the 1990-91 and 2001 recessions. ; In recent years, the U.S. economy has undergone a change in the behavior of productivity over the business cycle. Until the mid-1980s, productivity growth rose and fell with output growth. But since then the relationship between these two variables has weakened, and they have even moved in different directions. ; Fluctuations in productivity depend on two factors: the mix of shocks that drive the business cycle and the transmission of those shocks to output and labor market activity. Thus, two hypotheses stand out as plausible explanations for the change in the cyclical behavior of productivity. First, a decline in the importance of supply shocks for the business cycle may have changed the relationship of productivity and output over the business cycle. Second, structural changes in the labor market may have altered the transmission of shocks to the labor market and production. Specifically, a different labor market environment may have prompted firms to modify the way they meet their labor needs in response to shocks to the economy. ; Van Zandweghe examines the shift in the behavior of labor productivity over the business cycle and assesses the supply shock and structural change explanations for the shift. He finds that the importance of supply shocks in the business cycle has been stable over time. However, the behavior of productivity over the business cycle has shifted in response to both supply and demand shocks. Together, these results imply the shift in the business cycle behavior of productivity is most likely the result of structural changes in the labor market.

Determinacy under inflation targeting interest rate policy in a sticky price model with investment (and labor bargaining)

In a sticky price model with investment spending, recent research shows that inflation-forecast targeting interest rate policy makes determinacy of equilibrium essentially impossible. We examine a necessary and sufficient condition for determinacy under interest rate policy that responds to a weighted average of an inflation forecast and current inflation. This condition demonstrates that the average-inflation targeting policy ensures determinacy as long as both the response to average inflation and the relative weight of current inflation are large enough. We also find that interest rate policy which responds solely to past inflation guarantees determinacy when its response satisfies the Taylor principle and is not large. These results still hold even when wages and hours worked are determined by Nash bargaining.

Discretionary monetary policy in the Calvo model

We study discretionary equilibrium in the Calvo pricing model for a monetary authority that chooses the money supply. The steady-state inflation rate is above eight percent for a baseline calibration, and it varies non-monotonically with the degree of price stickiness. If the initial condition involves inflation higher than steady state, discretionary policy generates an immediate drop in inflation followed by a gradual increase to the steady state. Unlike the two-period Taylor model, discretionary policy in the Calvo model does not accommodate predetermined prices in a way that inevitably leads to multiple private-sector equilibria.

Labor market search and interest rate policy

We investigate implications of search and matching frictions in the labor market for in ation targeting interest rate policy in terms of equilibrium stability. When the interest rate is set in response to past or present in ation, determinacy of equilibrium is ensured similarly to comparable previous studies with frictionless labor markets. In stark contrast to these studies, indeterminacy is very likely if the interest rate is adjusted in response solely to expected future in ation. This is due to a vacancy channel of monetary policy that stems from the labor market frictions and renders in ation expectations self-ful lling. The indeterminacy can be overcome once the interest rate is adjusted in response also to output or the unemployment rate or if the policy contains interest rate smoothing. When E-stability is adopted as an equilibrium selection criterion, a unique E-stable fundamental rational expectations equilibrium is generated under active, but not too strong, policy responses only to expected future in ation. This suggests that the problem is not critical from the perspective of learnability of the fundamental equilibrium.

Working Paper 12-02 - Constructing productive ICT capital stock series for Belgium

We are grateful to our colleagues at the Federal Planning Bureau and to staff at the National Accounts Division of the National Bank of Belgium for their comments and suggestions. We also like to thank Marleen Keytsman for her help in preparing the document. All remaining errors are ours.In this paper, a methodology is proposed for the construction of ICT investment and capital stocks in Belgium. The series are obtained in nominal and in real terms and at macroeconomic as well as sector level. The ICT assets distinguished are IT equipment and communications equipment, leaving software out of the analysis. After calculation of investment expenditure on both assets, the expenditure is transformed into quality-adjusted volume terms by means of harmonised price indices derived from appropriate U.S. indices. Productive capital stocks are calculated by means of the perpetual inventory method, and rental prices of the ICT capital services are obtained as well.

Working Paper 07-02 - ICT contribution to economic performance in Belgium: preliminary evidence

In this paper, the impact of ICT on economic and productivity growth is investigated in the context of the Belgian economy. The analysis is conducted at aggregate and branch level. The impact of ICT on economic growth through productivity gains can be transmitted via three different channels, namely increase in the ICT capital available per worker (capital deepening), technical progress in the ICT producer sectors (TFP growth) and finally, technical progress in the ICT user sectors through spillover effects (TFP growth).

On-the-job search, sticky prices, and persistence

Models of the monetary transmission mechanism often generate empirically implausible business fluctuations. This paper analyzes the role of on-the-job search in the propagation of monetary shocks in a sticky price model with labor market search frictions. Such frictions induce long-term employment relationships, such that the real marginal cost is determined by real wages and the cost of an employment relationship. On-the-job search opens up an extra channel of employment growth that dampens the response of these two components. Because real marginal cost rigidity induces small price adjustments, on-the-job search gives rise to a strong propagation of monetary shocks that increases output persistence.On-the-job search Cost of an employment relationship Sticky prices Business fluctuations