the phillips curve macroeconomic policy and the welfare of canadians a review of the two competing paradigms explaining inflation and unemployment fluctuations singles out the keynesian phillips curve as the clear empirical winner over its classic competitors reestimation of the canadian phillips curve for 1957 90 identifies a sharp structural shift toward a high degree of unemployment hysteresis after 1972 the recent attempt of macropolicy to flatten the aggregate demand curve and limit supply side shock accommodation which aims at lower and more stable inflation is then shown to make unemployment higher and more unstable on average to an extent that is an increasing function of the degree of hysteresis understanding and reducing hysteresis and developing a consensus based incomes policy that has a chance of alleviating the dismal trade off should therefore to top research and policy priorities

the inflation tax in a real business cycle model money is incorporated into a real business cycle model using a cash in advance constraint the model economy is used to analyze whether the business cycle is different in high inflation and low inflation economies and to analyze the impact of variability in the growth rate of money in addition the welfare cost of the inflation tax is measured and the steady state properties of high and low inflation economies are compared

real sectoral spillovers a dynamic factor analysis of the great recession abstract dynamic factor methods are used to identify the impact of common and idiosyncratic shocks on sixteen u s nonfarm business sectors this paper then studies changes in the transmission of these shocks across sectors during the great recession and evaluates the cross sectoral spillovers the great recession is found to be largely a time of heightened impact of common shocks which accounts for 3 4 of aggregate volatility and large spillovers of negative finance related shocks in addition prior to the recession aggregate fluctuations are mainly driven by sector specific shocks in contrast with findings from previous studies

energy price shocks and medium term business cycles abstract energy price shocks pose sudden challenges to economies this paper examines how oil price shocks have influenced the u s economy over the last decades and especially focuses on the productivity slowdown in the years following an oil price shock we extend the existing literature by considering medium term business cycles which consist of high frequency components conventional business cycles up to 8 years and medium frequency components 8 50 years we find that the medium frequency consequences of energy price shocks are considerable and explain a significant part of the productivity slowdown

eductive stability in real business cycle models we reexamine issues of coordination in the standard rbc model is the unique rational expectations equilibrium attainable by rational agents who contemplate the possibility of small deviations from equilibrium surprisingly we nd that coordination cannot be expected even with strong common knowledge assumptions rational agents anticipating small but persistent deviations are led to take actions that eventually contradict the common knowledge assumption this impossibility theorem for eductive learning is not fully overcome when adaptive learning is incorporated into the framework

the brevity and violence of contractions and expansions abstract early studies of business cycles argued that contractions in economic activity were briefer shorter and more violent rapid than expansions this paper systematically investigates this claim and in the process discovers a robust new business cycle fact contractions in employment are briefer and more violent than expansions but we cannot reject the null of equal brevity and violence for expansions and contractions in output the difference arises because employment typically lags output around peaks but they coincide in their troughs we discuss the performance of existing business cycle models in accounting for this fact and conclude that none can fully account for it we then show that a business cycle model with asymmetric adjustment costs on employment and a choice of when to scrap old technologies can account for the business cycle fact both qualitatively and quantitatively

new keynesian perspectives on labor market dynamics abstract we find that demand shocks play an important role for business cycle fluctuations in unemployment and job vacancies the reason is that those shocks give a strong incentive to demand constrained firms to adjust production and thereby labor input furthermore we argue that whether real wage rigidity a la hall 2005 employment fluctuations with equilibrium wage stickiness american economic review 95 50 65 helps explain the remaining part of the unemployment volatility puzzle depends critically on assumptions regarding the form of the wage bargain between firms and workers real wage rigidity tends to generate volatility in employment only in the case in which hours are chosen efficiently if on the other hand the real wage is allowed to affect firms s choices of hours directly the feature of real wage rigidity loses its ability to increase employment volatility

expectations and economic fluctuations an analysis using survey data abstract using survey based measures of future u s economic activity from the livingston survey and the survey of professional forecasters we study how changes in expectations and their interaction with monetary policy contribute to fluctuations in macroeconomic aggregates we find that changes in expected future economic activity are a quantitatively important driver of economic fluctuations a perception that good times are ahead typically leads to a significant rise in current measures of economic activity and inflation we also find that the short term interest rate rises in response to expectations of good times as monetary policy tightens

explaining output volatility the case of taxation this paper presents strong empirical evidence that the observed heterogeneity of output volatility across countries and over time is partly endogenous in particular based on a closed form solution we obtain a long run equilibrium relationship between taxes and output volatility in the stochastic neoclassical growth model by showing that asymptotically the variance of output growth rates is affected by the level of taxes without affecting the mean we estimate the tax semi elasticities on output volatility and provide convincing empirical evidence that taxes are important to understand differences in output volatility among oecd countries

a cost adjustment heuristic for dynamic lot sizing with uncertain demand timing we define a new heuristic based on the adjustment of set up costs for the dynamic lot sizing problem when demand timing is uncertain using a range of simulated problems we compare the performance of this cost adjustment heuristic with that of a safety lead time heuristic zangwill s deterministic algorithm which ignores uncertainty and the optimal solution results show that the safety lead time heuristic works well for problems with high shortage costs and high probability of early demands but poorly in other circumstances the cost adjustment heuristic is quite robust generally exceeds the performance of the safety lead time approach and is relatively insensitive to variations in uncertainty

the economic consequences of productivity changes a computable general equilibrium cge analysis cutler h and davies s the economic consequences of productivity changes a computable general equilibrium cge analysis regional studies this paper uses a data intensive cge model to examine sector specific impacts of increases in total factor productivity and labour and capital productivity it focuses on the importance of a sector s output in household consumption and firms intermediate input demand the importance of labour and capital in value added and the impact on the city s consumer price index cpi as factors influencing the transmission mechanism the general equilibrium effects result in unambiguous increases in household migration for total factor productivity and capital productivity but not for the labour case this analysis emphasizes the impact on household income and tax revenue per new household cutler h et davies s les consequences economiques des changements de productivite une analyse egc regional studies cet article utilise un modele d equilibre general calculable egc

detecting multiple factors in panel data an application on the growth of local regions in china abstractdue to unbalanced growth in china s local regions we construct a panel data model with multiple common factors to examine the differences among the growth factors in these areas this article shows the various impacts from the supply and demand sides on economic growth different from the demand side the supply side impacts have permanent influences this article focuses on these deep and profound impacts to explain the reasons behind china s fast economic growing by using data on 27 regions from 1958 to 2013 we summarize the main permanent influences along three lines the first comes from the coastal regions which have learned modern technology and systems from foreign companies such as in guangdong zhejiang fujian and liaoning the second comes from big cities such as beijing and shanghai in which a huge migration has given the companies opportunities to recruit excellent workers making the resource allocation specialized and more efficient the third is from the government s major p

cyclical productivity in a model of labor hoarding abstract this paper develops a dynamic model of labor hoarding to explain two empirical facts the cyclical behavior of total factor productivity and the dynamic correlations of sectoral productivity with aggregate variables the model features convex costs of adjusting the labor force which induce firms to vary the intensity of labor utilization over the cycle in particular cyclical variations in labor effort take place as a response to expected future changes in industry conditions i test the restrictions imposed by the model for several two digit manufacturing industries under different assumptions about market structure and returns to scale then using the assumption that aggregate variables carry information about future changes in industry conditions i simulate the model s dynamic response of hours and productivity to aggregate innovations and compare them to those estimated from the data

evaluating unemployment policies what do the underlying theories tell us the paper surveys unemployment policies for advanced market economies and evaluates them by examining the predictions of the underlying macroeconomic theories the basic idea is that for the most part different unemployment policy prescriptions rest on different macroeconomic theories and our confidence in the prescriptions should depend at least in part on theories ability to predict some salient stylized facts about unemployment behavior the paper considers four types of policies laissez faire demand management policies supply side policies and structural policies copyright 1995 by oxford university press

real business cycles and labor markets with imperfectly flexible wages abstract one of the principal criticisms of real business cycle models is that the assumptions made about labor markets do not accord with the actual structure of these markets this paper replaces the standard spot labor market with a market characterized by imperfectly flexible wages which corresponds to impressions of contractual labor relations it is found that the behavior of the model in terms of the predicted variances and correlations is similar to that of the standard real business cycle model but that the variability of hours worked and the correlation of hours worked with wages will depend on the structure of the labor market

overtime labor employment frictions and the new keynesian phillips curve abstract this paper presents a new keynesian nk model that is extended to differentiate between straight time and overtime work the model proposes that the new keynesian phillips curve nkpc should be estimated with marginal cost measured in terms of overtime labor the resulting coefficient estimates are in accordance with theory and statistically significant for the hybrid nkpc which allows for backward looking price setters but not for the purely forward looking nkpc in the hybrid model backward looking behavior is found to be predominant the paper also shows that the incorporation of employment frictions predetermined employment and convex adjustment costs in nk models helps reconcile the frequent price changes found in the microdata with the degree of sluggishness in inflation adjustment to output changes at the macro level

behavioral theories of the business cycle we explore the business cycle implications of expectation shocks and of two well known psychological biases optimism and overconfidence the expectations of optimistic agents are biased toward good outcomes whereas overconfident agents overestimate the precision of the signals that they receive both expectation shocks and overconfidence can increase business cycle volatility while preserving the model s properties in terms of comovement and relative volatilities in contrast optimism is not a useful source of volatility in our model jel e3

production lags and price behaviour this paper explores the implications of the production lag for the firm s decisions the authors establish a significant relationship between price behavior and the length of the production lag they show that specific results in the literature are crucially dependent upon the assumption about the production lag by allowing the production time to exceed the decision period the basic framework of the earlier price inventory models is significantly extended the model thus incorporates finished goods inventories as well as goods in process inventories copyright 1992 by the london school of economics and political science

money and the business cycle with one period nominal contracts a modified version of the nominal contract developed by j a gray 1976 and s fischer 1977 is introduced in a general equilibrium model with money which has been used in the real business cycle literature money is introduced in the model through cash in advance constraint two kinds of contracts are examined namely a nominal wage contract and a nominal price contract the nominal wage contract improves the fit of the model in many respects the nominal price contract increases the output volatility enormously but it has some unrealistic features

business cycles with distorting taxes and disaggregated capital markets abstract this paper studies a neoclassical growth model to examine the linkages between distorting corporate and personal taxes and cyclical movements of aggregates such as investments in equipment and structures suppose tax variables vary stochastically and annually we solve quarterly individual and aggregate decision rules by recursive methods and quantify the dynamic impacts on aggregates from unit changes in tax structures and individual and joint tax specifications the findings suggest that corporate income tax is the major factor leading to substantial tax effects on business cycles moreover the impact of investment tax credit for equipment on disaggregated investments is equally significant

the role of energy in real business cycle models abstract this paper modifies hansen s 1985 analysis of a real business cycle mode with indivisible labor by explicitly including energy as a productive input and modelling the relative price of energy as an exogenous random process one goal is to determine the extent to which the introduction of energy price shocks reduces the reliance of the real business cycle model on unobserved technology shocks the other goal following christiano and eichenbaum 1991 is to compare the correlation between real wages and hours predicted by the energy inclusive model to that predicted by hansen s model

on some computational aspects of equilibrium business cycle theory abstract this paper evaluates the accuracy of quadratic approximate methods in the context of a simple real business cycle model the level of accuracy is found to be very high on the face of the results reported here we are confident that the different computation methods proposed to date in this literature can be employed interchangeably

tax disturbances and real economic activity in the postwar united states abstract this paper investigates the macroeconomic effects of cyclical fluctuations in marginal tax rates it finds that systematically including tax variables in a standard real business cycle model substantially improves the model s ability to reproduce basic facts about postwar u s business cycle fluctuations in particular modeling fluctuations in personal and corporate income tax rates increases the model s predicted relative variability of hours and decreases its predicted correlation between hours and average productivity fluctuations in tax rates produce large substitution effects that alter the leisure labor supply decision

nobel lecture the transformation of macroeconomic policy and research what i am going to describe for you is a revolution in macroeconomics a transformation in methodology that has reshaped how we conduct our science prior to the transformation macroeconomics was largely separate from the rest of economics indeed some considered the study of macroeconomics fundamentally different and thought there was no hope of integrating macroeconomics with the rest of economics that is with neoclassical economics others held the view that neoclassical foundations for the empirically determined macro relations would in time be developed neither view proved correct finn kydland and i have been lucky to be a part of this revolution and my address will focus heavily on our role in advancing this transformation now all stories about transformation have three essential parts the time prior to the key change the transformative era and the new period that has been affected by the change and that is the story i am going to tell how macroeconomic policy and research changed as a result of the transformation of macroeconomics from constructing a system of equations of the national accounts to an investigation of dynamic stochastic model economies

productivity growth consumer confidence and the business cycle abstract the objective of this paper is to provide in the context of a dynamic general equilibrium model an answer to the following five questions 1 to what extent does an economy subject to regular variations in labor productivity growth differ from one where labor productivity is constant 2 what is the impact on major macro indicators of a one time change in labor productivity growth 3 what are the business cycle implications of autonomous non falsifiable changes in growth expectations 4 what is the potential of such expectation changes for explaining the volatility of consumption to output ratio 5 can autonomous changes in growth expectations help us understand recent business cycle episodes

international debt and world business fluctuations abstract the international transmission of real productivity disturbances is examined in an optimizing model with two countries each inhabited by an infinitely lived representative consumer producer we analyze the dynamics of output consumption investment interest rates and net external debt foreign productivity shocks can have positive or negative impacts on domestic output and international debt depending on the intertemporal distribution of the shocks transient foreign shocks are shown to be positively transmitted and lead to increased domestic indebtedness while permanent foreign shocks are negatively transmitted and lead to a decline in domestic indebtedness

cyclical factor utilization abstract we introduce procyclical labor and capital utilization as well as costs of rapidly increasing employment into a business cycle model plausible variations in factor utilization enable us to explain observed variability of real gnp with considerably smaller economy wide disturbances the costs of adjustment create very interesting and realistic lead and lag relationships employment does not peak until a full quarter after output workweeks effort capital utilization and productivity all sharply lead the business cycle

some consequences of temporal aggregation in empirical analysis i derive the generating mechanism of a temporally aggregated process when the disaggregated one belongs to the vector autoregressive integrated moving average class i then study the effects of temporal aggregation on a set of characteristics of usual interest such as exogeneity causality cointegration and common features an empirical example with canadian interest rates illustrates the main issues

sticky wage or sticky price analysis of the cyclical behavior of the real wage the study of business cycles has been at the heart of macroeconomic theory for decades theoretical efforts have focused on providing an adequate explanation for sources of economic fluctuations new keynesian explanations have emphasized rigidity that interferes with market forces increasing the effect of demand shocks on the output produced the form of rigidity is in sharp contrast between sticky wage and sticky price models the former imposes rigidity on the shortrun adjustment of wages to demand shocks 20 47 the latter in contrast imposes rigidity on the short run price adjustment to demand shocks 2 34 40 9 43 4 the theoretical plausibility of competing explanations of business cycles has stimulated interest to establish their empirical validity 32 28 1 8 11 23 21 26 these efforts have focused attention on cyclical fluctuations of the real wage in response to demand shocks the real wage may move procyclically or countercyclically according to the relative adjustment of wages and prices the interest in studying the cyclical behavior of the real wage relates to its implications to the real effects of aggregate demand shocks in the context of sticky wage models nominal wage rigidity reinforces the countercyclical response of the real wage to demand shocks and the real effect of these shocks on output growth sticky price models in contrast advocate that price rigidity increases the procyclical response of the real wage to demand shocks and their real effect on output growth the results of earlier investigations of the cyclical behavior of the real wage appear conflicting and therefore do not lend support to a given explanation 2 the present investigation seeks to contribute to this literature unlike previous empirical research on the subject the objective of this investigation is to study the cyclical behavior of the real wage and the relative flexibility of the nominal wage and the price level that determines this behavior in response to demand shocks using data for the united states in the preand post world war ii sample periods the cyclical

asymmetric phase shifts in u s industrial production cycles abstract we identify cyclical turning points for 74 u s manufacturing industries and uncover new empirical regularities a industries tend to comove between expansion and contraction phases over the business cycle b clusters of industry turning points are highly asymmetric between peaks and troughs troughs are much more concentrated and sharper than peaks c the temporal pattern of phase shifts across industries supports the spillovers through input output linkages and d macroeconomic shocks such as unanticipated changes in monetary policy government spending oil prices and financial conditions are significant drivers of industrial phase shifts

threshold behavior and aggregate fluctuation this paper concerns a propagation mechanism in an economy where many individuals follow a threshold rule and interact with a positive feedback we derive an asymptotic distribution of the propagation size when the number of the agents tends to infinity the propagation distribution exhibits a slower convergence to a deterministic value than it would if the agents followed a smooth adjustment policy this gives rise to significant aggregate fluctuations in a finite lumpy adjusting economy even when the agents are hit by small independent shocks

anticipated versus unanticipated terms of trade shocks and the j curve phenomenon abstract using a dynamic stochastic general equilibrium dsge model we examine the impact of anticipated and unanticipated terms of trade tot shocks on aggregate output inflation and the trade balance tb this allows us to offer an alternative explanation of the j curve phenomenon we find that an unanticipated tot shock increases real output as well as inflation but the j curve phenomenon may not exist under a certain condition however under the same condition an anticipated tot shock leads to the j curve effect we find that our main result concerning the j curve phenomenon continues to hold even if the assumption of rational expectations about the tot is relaxed further analysis reveals that the presence of a cost channel of monetary policy increases the intensity of the j curve effect assuming plausible parameter values while using a more general model calibration results support our theoretical predictions

introduction to sunspots and lotteries abstract this introduces the symposium on sunspots and lotteries two stochastic general equilibrium concepts sunspot equilibrium se and lottery equilibrium le are compared it is shown that for some general pure exchange economies which allow for consumption nonconvexities or moral hazards the set of le allocations is equivalent to the set of se allocations provided that the randomizing device can generate events of any probability journal of economic literature classification numbers d51 d82 d84 e32

interpreting a stochastic monetary growth model as a modified social planner s problem abstract using a stochastic cash in advance growth model similar to that studied by cooley and hansen 1989 it is demonstrated that the competitive monetary equilibrium can be expressed as the solution to a modified social planner s problem hence by employing standard dynamic optimization techniques and the second welfare theorem to the modified social planner s problem the equilibrium of the monetary economy can be studied

understanding expectation driven fluctuations a labor market approach this paper presents a uni ed analysis of neoclassical models that can generate expectation driven business cycles under anticipated future technology shocks or news shocks it shows that the ability or inability of various rbc models to generate positive comovement of aggregate variables hinges crucially on the structure of the labor market equilibrium the analysis provides a simple and intuitive guide to understanding the existing literature and to searching for new models that can explain the data under news shocks

macroeconomic policy and output comovement the formal and informal sectors in india abstract is the informal sector different from the formal sector we present an aggregative analysis of the formal and informal sectors in india to investigate the extent to which the two can be viewed as broadly homogeneous using a macroeconometric framework the paper analyzes over past three decades the behavior of the two sectors with respect to each other and several government related policy variables it is found that the formal and informal sectors display markedly different attributes in terms of their relationship to policy variables furthermore the informal sector appears to be decoupled from the rest of the economy

indivisible labor lotteries and equilibrium abstract this paper considers an economy where labor is indivisible and agents are identical although the discontinuity in labor supply at the individual level disappears as a result of aggregation it is shown that indivisible labor has strong consequences for the aggregate bahavior of the economy it is also shown that optimal allocations involve lotteries over employment and consumption

an estimate of a sectoral model of labor mobility this paper develops a model of sectoral labor mobility and tests its main implications the model nests two distinct hypotheses on the origin of mobility a sectoral shocks and b worker employer mismatch we estimate the relative importance of each hypothesis and find that the bulk of labor mobility is caused by mismatch rather than by sectoral shift we then try to put a value on society s match specific information that is we ask to what extent the availability of the option to change jobs raises gnp we find that the mobility option raises expected earnings by roughly between 8 5 percent and 13 percent of labor earnings which translates to an increase in gnp of between 6 percent and 9 percent

indivisible labor and the business cycle abstract a growth model with shocks to technology is studied labor is indivisible so all variability in hours worked is due to fluctuations in the number employed we find that unlike previous equilibrium models of the business cycle this economy displays large fluctuations in hours worked and relatively small fluctuations in productivity this finding is independent of individuals willingness to substitute leisure across time this and other findings are the result of studying and comparing summary statistics describing this economy an economy with divisible labor and post war u s time series

labor productivity and the business cycle can r b c models be saved abstract standard r b c models do not enable one to reproduce the main labor market stylized facts employment is more variable than productivity and average productivity leads the cycle in order to mimic these features we consider a model with indivisible labor labor hoarding and adjustment costs the model is then simulated and compared to u s stylized facts we show that government expenditure shock and some specific labor adjustment costs are necessary to explain the lead of the average productivity over the business cycle

convergence endogenous growth and productivity disturbances abstract kelly 1992 has recently shown that evidence on convergence cannot be taken as evidence against endogenous growth in general this study uses a well known class of stochastic growth models to show other difficulties with traditional empirical studies of convergence key parameters typically cannot be estimated consistently in cross section regressions when the parameters are assumed known implications for convergence are unavailable except under restrictive and economically unmotivated assumptions those same assumptions that relate key parameters to cross country convergence render cross section regressions impossible to estimate consistently

real business cycle theory wisdom or whimsy abstract this paper assesses the empirical plausibility of the view that aggregate productivity stocks account for most of the variability in post world war ii us output we argue that the type of evidence forwarded by proponents of this proposition is too fragile to be believable the answer could be 70 as kydland and prescott 1989 claim but the data contain almost no evidence against either the view that the answer is really 5 or that the answer is really 200 moreover point estimates of the importance of technology shocks are extremely sensitive to small perturbations in the theory depending on the sample period investigated allowing for labor hoarding behavior in an otherwise standard rbc model reduces the ability of technology shocks to account for aggregate fluctuations by between 30 to 60

sectoral versus aggregate shocks a structural factor analysis of industrial production using factor methods we decompose industrial production ip into components arising from aggregate and sector specific shocks an approximate factor model finds that nearly all of ip variability is associated with common factors we then use a multisector growth model to adjust for the effects of input output linkages in the factor analysis thus a structural factor analysis indicates that the great moderation was characterized by a fall in the importance of aggregate shocks while the volatility of sectoral shocks was essentially unchanged consequently the role of idiosyncratic shocks increased considerably after the mid 1980s explaining half of the quarterly variation in ip

understanding european unemployment with a representative family model abstract a representative family model with indivisible labor and employment lotteries has no labor market frictions and complete markets nevertheless its aggregate responses to an increase in government supplied unemployment insurance ui and to an increase in microeconomic turbulence are qualitatively similar to those in two macromodels with labor market frictions and incomplete markets namely the matching and search island models in ljungqvist and sargent 2007a understanding european unemployment with matching and search island models journal of monetary economics this issue because there is no frictional unemployment in the representative family model an increase in employment protection ep decreases aggregate work because the representative family substitutes leisure for work an effect opposite to what occurs in matching and search island models heterogeneity among workers highlights the economy wide coordination in labor supply and consumption sharing that employment lotteries and complete markets achieve in the representative family model a high disutility of labor makes generous ui cause very low employment levels

real rigidities productivity improvements and investment dynamics abstract 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

overtime effort and the propagation of business cycle shocks abstract this paper presents and estimates a variant of hansen and sargent s 1988 real business cycle model with straight time and overtime the model presented has only one latent variable the state of technology yet it does a better job propagating and magnifying shocks than the labor hoarding models which incorporate unobserved effort this model as well as a version of burnside eichenbaum and rebelo s 1993 labor hoarding model is estimated using maximum likelihood the maximum likelihood parameter estimates are compared to those using gmm

the aggregate effects of sectoral reallocations abstract can a one time permanent change in the fundamentals behind the sectoral composition of the economy prompt an aggregate downturn can this downturn be non negligible even if one uses us data to determine the relative size of gross vs net job flows and the importance of job creation costs can one consider the military build down of the 1990s as a plausible cause for the 1990 1991 recession do sectoral reallocations generate responses that are qualitatively similar to productivity shocks we use a variant of the mortensen pissarides 1994 review of economic studies 61 397 415 job creation destruction model calibrate it to us labor market data and run experiments that suggest one can answer yes to all these questions

straight time and overtime in equilibrium abstract we formulate an equilibrium model of straight time and overtime wages by imposing restrictions on agents consumption sets and using a commodity space that includes employment lotteries we extract some time series implications from a linear quadratic approximation to our model evaluated at particular parameter values we use our model informally to interpret some features of observed time series for wages and employment

production growth and business cycles ii new directions abstract this paper outlines new directions for investigations of real business cycle models consideration of stochastic growth of exogenous and endogenous forms analysis of suboptimal outcomes arising due to externalities of distorting taxes and implications of labor market heterogeneity

sticker shocks using vat changes to estimate upper level elasticities of substitution we estimate the upper level elasticity of substitution between goods and services of a nested aggregate ces preference specification we show how this elasticity can be derived from the long run response of the relative price of a good to a change in its vat rate we estimate this elasticity using new data on changes in vat rates across 74 goods and services for 25 european union countries from 1996 through 2015 depending on the level of aggregation we find a vat pass through rate between 0 4 and 0 7 this implies an upper level elasticity of 3 at the lowest level of aggregation with 74 categories and 1 cobb douglas preferences at a high level of aggregation that distinguishes 10 categories of goods and services

an alternative explanation of the price puzzle abstract this paper proposes an explanation for the frequent appearance of a price puzzle in vars designed for monetary policy analysis it assumes that the data are generated by a model in which output and output gap are not equivalent while an econometrician follows the common practice of including only output in the var the omission of the output gap is shown to spuriously produce a price puzzle and several other incorrect conclusions in a class of commonly used models this can happen even if the model admits a triangular identification and if the forecasts produced by the misspecified var are optimal when the model is tested on us data all predictions are supported a commodity price index is not needed to solve the puzzle

can world real interest rates explain business cycles in a small open economy abstract while the world real interest rate is potentially an important mechanism for transmitting international shocks to small open economies much of the recent quantitative research that studies this mechanism concludes that it has little effect on output investment and net exports we re examine the importance of world real interest rate shocks using an approach that reverses the standard real business cycle methodology we begin with a small open economy business cycle model but rather than specifying the stochastic processes for the shocks and then solving and simulating the model to evaluate how well these shocks explain business cycles we use the model to back out the shocks that are consistent with the model s observable endogenous variables then we use variance decompositions to examine the importance of each shock we apply this methodology to canada and find that world real interest rate shocks can play an important role in explaining the cyclical variation in a small open economy in particular they can explain up to one third of the fluctuations in output and more than half of the fluctuations in net exports and net foreign assets

a dynamic small open economy model with involuntary unemployment it is well known that real business cycle small open economy soe models rely on greenwood hercowitz and huffman 1988 preferences to match the countercyclical trade balance observed in open economies as well as other second moments while standard preferences a la king plosser and rebelo 1988 are commonly labelled ineffective owing to their inability to yield the countercyclical trade balance in this paper i show that an soe model with standard preferences and involuntary unemployment with efficient risk sharing can obtain a countercyclical trade balance and match main empirical regularities in small open economies il est bien connu que les modeles de cycles d affaires reels dans une petite economie ouverte peo comptent sur des preferences a la greenwood hercowitz et huffman 1988 pour etre compatibles avec la balance commerciale contre cyclique observee dans les economies ouvertes ainsi que sur d autres second moments alors que les preferences standards a la king plosser et rebelo 1988 sont considerees comme ineffectives a cause de leur inhabilitea engendrer la balance commerciale contre cyclique dans ce texte l auteur montre qu un modele de peo avec preferences standards et chomage involontaire et partage efficient du risque peut engendrer une balance commerciale contre cyclique et s arrimer aux principales regularites observees dans les petites economies ouvertes

labor hoarding and the business cycle this paper investigates the sensitivity of solow residual based measures of technology shocks to labor hoarding behavior using a structural model of labor hoarding and the identifying restriction that innovations to technology shocks are orthogonal to innovations in government consumption we estimate the fraction of the variability of the solow residual that is due to technology shocks our results support the view that a significant proportion of movements in the solow residual are artifacts of labor hoarding behavior specifically we estimate that the variance of innovations to technology is roughly 50 percent less than that implied by standard real business cycle models in addition our results suggest that existing real business cycle studies substantially overstate the extent to which technology shocks account for the variability of postwar aggregate u s output

endogenous capital depreciation and technology shocks i examine the dynamic impact of capital maintenance on key aggregates through the depreciation rate i find that two factors are crucial for the short run effects of total factor productivity and investment specific shocks i the marginal efficiency of maintenance and its connection with the rate of utilization and ii the interplay between the intertemporal effect of maintenance and the substitution effect between maintenance and utilization the latter is expressed by the relative size of the elasticity of maintenance to the hicksian elasticity of complementarity between maintenance and utilization these theoretical results suggest that to match the observed responses of the macroeconomic aggregates the sign of the cross derivative should be negative and that the relative size of the hicksian elasticity should be smaller than the maintenance elasticity of marginal depreciation finally the model suggests that the main macroeconomic aggregates react procyclically with the exception of maintenance the behavior of which depends on the type of the shock

technical progress and aggregate fluctuations abstract we compare the cyclical fluctuations exhibited by a stochastic growth model under various stochastic processes governing technical change all of which are highly autocorrelated the results obtained are quite sensitive to the precise form of this stochastic process in particular the results depend on whether growth is deterministic or stochastic and in each case are quite sensitive to the persistence of an innovation the model does a relatively poor job of accounting for features of observed business cycles when technical change is difference stationary and does a better job when technical change is trend stationary but highly autocorrelated

spillovers from foreign direct investment within or between industries this paper contributes an estimation framework to measure both technological and linkage externalities from foreign direct investment fdi empirical research dealt mainly with intra industry spillovers from fdi with restrictive treatment of inter industry effects until recently however as optimal organization of the multinational corporation mnc involves minimization of profit losses due to leakage of technical information to competitors host country firms within the mnc s sector experience limited productivity gains ensuing fdi host country producers in other sectors may benefit for example mncs transfer knowledge to local downstream clients or outsource to local upstream suppliers hence fdi substitutes within sector domestic investment but complements it across sectors the net impact on aggregate capital formation by host country producers hinges on the interaction between linkages and spillovers estimations based on the colombian manufacturing census yield the sectoral pattern of fdi spillovers displaying knowledge propagation between but not within industries the findings reveal outsourcing relationships of mncs with local upstream suppliers as the channel of diffusion

productivity shocks and real business cycles abstract productivity shocks play a central role in real business cycles as an exogenous impulse to macroeconomic activity however measured solow prescott residuals do not behave as an exogenous impulse rather econometric evidence provided in this paper indicates that 1 money interest rates and government spending granger cause these impulses and 2 a substantial component of the variance of these impulses between one quarter and one half is attributable to variations in aggregate demand these results are robust to a number of econometric issues including measurement errors specification of the production function and certain forms of omitted real variables

do all sectoral shocks lead to aggregate volatility empirics from a production network perspective abstract productive diversification has long been acknowledged as a volatility reducing strategy yet recent theoretical contributions have shown that in strongly diversified economies idiosyncratic shocks could translate into aggregate volatility via the network of inter industry linkages by exploiting exogenous cross country sector variations in demand shocks during the 2008 great recession we provide empirical evidence that the network properties of a sector affected by an individual shock determine its propensity to transmit volatility to the rest of the economy more precisely shocks to sectors that are located in denser parts of a production network fade out over a large number of alternative paths of propagation due to substitution effects whereas shocks to sectors that are more influential within the network generate aggregate fluctuations through contagion effects we also find that the impact of sectoral shocks on aggregate volatility 1 is not conditional on sector level differences in trade intensity and 2 is larger for developing countries because they tend to have more isolated influential sectors and larger structural holes in their production network our results thus help consolidate the two opposite views in the literature on the impact of productive diversification on aggregate volatility

business cycles and labor market search the quantitative implications of labor market search for economic fluctuations are evaluated in the context of a real business cycle model incorporating labor market search into the model is found to improve its empirical performance along several dimensions in particular hours now fluctuate substantially more than wages and the contemporaneous correlation between hours and productivity falls in addition the model replicates the observation that output growth displays positive autocorrelation at short horizons overall the empirical results suggest that the labor market search environment embodies a quantitatively important propagation mechanism copyright 1996 by american economic association

a theory of demand shocks this paper presents a model of business cycles driven by shocks to consumer expectations regarding aggregate productivity agents are hit by heterogeneous productivity shocks they observe their own productivity and a noisy public signal regarding aggregate productivity the public signal gives rise to noise shocks which have the features of aggregate demand shocks they increase output employment and inflation in the short run and have no effects in the long run numerical examples suggest that the model can generate sizable equilibrium dsge models of the business cycle include a large number of shocks to technol ogy monetary policy preferences etc but typically do not include expectational shocks as independent drivers of short run fluctuations 1 this paper explores the idea of expectation driven cycles looking at a model where technology determines equilibrium output in the long run and consumers receive noisy signals about technology in the short run the presence of noisy signals produces expectational errors this paper studies the role of these expectational errors in gener ating volatility at business cycle frequencies the model is based on two ingredients first consumers take time to recognize permanent changes in aggregate fundamentals although they may have good information on the current state of the individual firm or sector where they operate they have only limited information regarding the long run determinants of aggregate activity second consumers have access to public information that is relevant to estimate long run productivity this includes news about technological innovations publicly released macroeconomic and sectoral statistics financial market prices and public statements by policy makers however these signals provide only a noisy forecast of the long run effects of technological innovations this opens the door to noise shocks which induce consumers to temporarily overestimate or underestimate the productive capacity of the economy

inflation and labor market dynamics revisited abstract we demonstrate that the presence of an empirically plausible labor adjustment decision at the firm level rationalizes strategic complementarities in price setting which help explain inflation dynamics those strategic complementarities are typically assumed away in the related existing literature this motivates our revisiting of inflation and labor market dynamics

dynamic lot sizing when demand timing is uncertain we characterize optimal solutions for the dynamic lot sizing problem when demand quantities are known but their timing is uncertain the characterization states that for some possible history of demands following a period of production there is a period with zero inventory before another period with production using this characterization we outline a dynamic program for the solution of these problems some results from sample problems illustrate the variety of optimal solutions that can occur

note a note on the dynamic lot size model with uncertainty in demand and supply processes in this paper we give some extensions of a result of nevison and burstein nevison c h m burstein 1984 the dynamic lot size model with stochastic lead times management sci 30 100 109 who discuss a dynamic lot sizing model with stochastic lead times they consider a situation in which the lead time distribution is unaltered by the amount which is ordered but is otherwise arbitrary and characterize the optimal solution in terms of points at which there is zero inventory here we give a more precise characterization and show that these results can be extended to a situation in which the demands are also stochastic and in which there is uncertainty relating to quantity as well as to the timing of demands and order arrivals the method of proof that we use is different from that used by nevison and burstein

productivity shocks and business cycles this note uses two measures of productivity growth the solow residual and the dual residual from the cost function to test competing theories of the cycle in a number of oecd countries the empirical results indicate that both demand and supply shocks play a role in driving economic cycles and therefore refute the stronger real business cycle hypothesis

anticipated growth and business cycles in matching models in a business cycle model that incorporates a standard matching framework employment increases in response to news shocks even though the wealth effect associated with the increase in expected productivity reduces labor force participation the reason is that the matching friction induces entrepreneurs to increase investment in new projects and vacancies early if there is underinvestment in new projects in the competitive equilibrium then the efficiency gains associated with an increase in employment make it possible that consumption employment output as well as the investment in new and existing projects jointly increase long before the actual increase in productivity materializes if there is no underinvestment then investment in existing projects decreases but total investment consumption employment and output still jointly increase

financial innovation price smoothing and monetary policy financial innovation price smoothing and monetary policy i introduction in a monetary economy the volume of nominal transactions fluctuates with the level of economic activity empirical evidence suggests that the supply of nominal transaction assets such as currency and bank deposits also fluctuates with the level of economic activity some researchers have attributed these observations to the phenomenon of money endogeneity 1 one explanation for this endogenous supply response is a systematic monetary policy as described by black 1972 under which the central bank passively adjusts the money supply to accommodate the changes in money demand alternatively king and plosser 1984 and saving 1979 stress the role of the private banking system in producing this endogenous response they argue that exogenous changes in real activity elicit sympathetic changes in the demand for transaction services that may be partially or fully accommodated by the banking system through its supply of inside money in either case this endogenous supply response tends to mitigate the price adjustment that accompanies a real supply shock 2 in the long run however the price level is ultimately determined by the central bank in the market for the nominal quantity that it controls e g currency bank reserves when deposit accounts are subject to reserve requirements or the monetary base 3 this suggests that if the private banking system does not fully accommodate the real shock and if the shock exhibits a well defined persistence then endogenous price adjustments that are fully anticipated may be further damped by a passive supply response by the central bank in addition if price expectations affect real interest rates then current period price level smoothing via a passive monetary policy may also be possible 4 in addition to employing transaction assets currency and checkable bank deposit accounts to meet their transaction requirements agents may purchase non deposit transaction services directly for firms these services include the tools available to the modern corporate cash manager such as lockbox collection systems repurchase agreements and zero balance accounts in the household sector they take the form of atms debit and credit cards and overdraft privilages on checkable accounts among others these non deposit transaction services represent an increasingly important medium of exchange their supply by the banking system is not directly controlled by the central bank and also offers another avenue by which the economy may respond endogenously to fluctuating transaction requirements associated with real shocks thereby further mitigating the price adjustment 5 the production of non deposit transaction services is subject to technology shocks in the form of financial innovations these innovations alter the economy wide demand for currency and checkable bank deposit accounts and prices adjust as with the introduction of new technology into the production of goods financial innovations are not fully adopted immediately due to the fixed costs of adjusting individual cash management practices but are instead assimilated over time this implies that their effects on transaction asset demands persist if the rate of adoption has a forecastable component the central bank can smooth expected prices by passively accommodating these innovations as with aggregate productivity shocks this persistence may also enable the central bank to damp the disturbances to the current period price level that these innovations create through the impact of price expectations on real interest rates this paper examines a non deposit transaction services market in a model economy that is developed in section ii it has the following features transactors can meet their transaction requirements by allocating wealth to currency or to bank deposit accounts that pay a market determined interest rate or by purchasing non deposit transaction services directly at a market determined price

trade interdependence and the international business cycle a stochastic general equilibrium model of the world economy is developed to analyze the contribution of trade interdependence to international business cycles we test some of the implications of the model using data from ten major industrial countries and a variety of detrending techniques to calculate the cyclical component of output we find that the significance of trade in the transmission of economic disturbances across countries is not robust to the choice of the detrending method in general the role of trade interdependence is moderate and seem to have been stronger in the period before 1973

aggregate fluctuations and the industry structure of the us economy abstract in a two sector economy changes in intermediate input trade as reflected in cost share fluctuations are key to determining the amplification properties of investment specific and neutral shocks i document that the cost shares of intermediate inputs produced by the investment sector correlate positively with gdp whereas those of inputs produced by the consumption sector correlate negatively with gdp the two sector model of greenwood et al 1988 is extended to allow for trade of intermediate goods and to show that the documented correlations discipline heterogeneous elasticities of substitution in intermediate inputs across sectors shock amplification that is the effect of a sectorial shock on aggregate value added depends on the degree of heterogeneity in these elasticities of substitution for a calibrated economy to that of the united states i find that shock amplification is stronger than in a unitary elasticity economy it is also stronger than in an economy with a common non unitary elasticity that is either inferred from data via reduced form estimates or calibrated to match the same targets as our benchmark economy

dynamic version of the economic lot size model this article originally appeared in management science october 1958 volume 5 number 1 pp 89 96 published by the institute of management sciences a forward algorithm for a solution to the following dynamic version of the economic lot size model is given allowing the possibility of demands for a single item inventory holding charges and setup costs to vary over n periods we desire a minimum total cost inventory management scheme which satisfies known demand in every period disjoint planning horizons are shown to be possible which eliminate the necessity of having data for the full n periods

disaggregate stochastic trends in industrial production abstract several industries appear cointegrated at a highly disaggregated level but the cointegration is not sufficient to reduce the system to a single common trend instead the results indicate that ten common trends are present in the industrial production aggregate

the workweek of capital and its cyclical implications abstract the neoclassical growth model studied in the kydland and prescott time to build paper is modified to permit the capital utilization rate to vary the effect of this modification is to increase the amplitude of the aggregate fluctuations predicted by theory as the equilibrium response to technological shocks if following solow the changes in output not accounted for by changes in the labor and tangible capital inputs are interpreted as being the technology shocks the statistical properties of the fluctuations in the postwar united states economy are close in magnitude and nature to those predicted by theory

real business cycles in this paper we demonstrate how certain very ordinary economic principles lead maximizing individuals to choose consumption production plans that display many of the characteristics commonly associated with business cycles our explanation is entirely consistent with i rational expectations ii complete current information iii stable preferences iv no technological change v no long lived commodities vi no frictions or adjustment costs vii no government viii no money and ix no serial dependence in the stochastic elements of the environment we also provide a completely worked out example of the type of artificial economy we have in mind the time series properties of the example exhibit some major features of observed business cycles although this type of model may not be capable of explaining all of the regularities in actual business cycles we believe that it provides a useful well defined benchmark for assessing the relative importance of factors e g monetary disturbances

plant level nonconvex output adjustment and aggregate fluctuations in most manufacturing industries plant level output is adjusted along three margins of capacity utilization shiftwork weekend work and closing temporarily down due to the discrete and lumpy nature of these margins only a fraction of plants adjust output in response to shocks in a business cycle model calibrated to establishment level observations these nonconvexities make aggregate output less volatile than when plants can adjust smoothly further the mass of adjusting plants is larger in downturns than in upturns leading to counter cyclical volatility of aggregate output and government policy being slightly more effective in recessions than in expansions