wage rigidities and jobless recoveries abstract real wage rigidities cause jobless recoveries suppose that a one time shock reduces the capital stock below trend if wages are flexible they decline and employment increases at the moment of the shock before both revert back to normal levels as the economy grows back to trend if wages are completely rigid and the labor market is otherwise frictionless the shock causes a proportional and permanent decline in employment capital output consumption and investment relative to trend in a search model with rigid wages the shock causes a persistent but not permanent decline in these economic outcomes a jobless recovery

a bargaining model where parties make errors in a now classical paper nash 1953 studied the following bilateral bargaining game the two parties state their demands simultaneously if these are compatible with a feasible agreement each party gets the utility corresponding to his demand otherwise both parties get their conflict payoffs under quite general conditions this game has a continuum of equilibria any possible agreement which is both pareto optimal and individually rational corresponds to a particular equilibrium point recently the literature on sealed bid double auctions see e g leininger et al 1989 and matthews and postlewaite 1989 has extended nash s model to the case where each party has incomplete information about the other party s valuation a common feature of these models is that they lead to an even larger set of equilibria and thus to an aggravation of the nonuniqueness problem in the present paper we will show that this problem all but disappears if a different kind of uncertainty is introduced into nash s model viz if one assumes that the parties make errors in choosing their actions in the bargaining process this modification will be seen to imply the existence of an equilibrium which pareto dominates all other equilibria the rationale for our assumption lies in the implausibly precise coordination needed to induce equilibrium play in nash s original model each nontrivial equilibrium consists of a pair of demands that are just compatible even an arbitrarily small deviation in the wrong direction will reduce both players to their conflict payoffs by adding error terms to tne bids we get rid of this discontinuity and force the players to weigh their demands against the risk of breakdown thus our assumption could be seen as a way of accounting for the strategic uncertainty which seems practically unavoidable in a game where strategies are continuously variable more fundamentally the errors may be thought to reflect the presence of some uncertainty about the exact values of relevant parameters formally the errors will be modeled by letting a player s bid result from the addition of a stochastic term to his strategy the rules of nash s game will also be modified by allowing a surplus to be divided between the players while in nash s model the players get precisely what they have demanded even when demands are more than compatible we make the more general assumption that some fraction ranging between zero and one of the unclaimed surplus is divided between the parties according to a surplus partition rule a similar assumption is made in the above mentioned incomplete information models but the severe indeterminacy makes it impossible to assess its influence the above described equilibrium properties of our model hold for errors of arbitrary magnitude naturally it is particularly interesting to study the properties when errors go to zero in the special case where no surplus is divided we find a convergence to the

sophisticated monetary policies in standard monetary policy approaches interest rate rules often produce indeterminacy a sophisticated policy approach does not sophisticated policies depend on the history of private actions government policies and exogenous events and can differ on and off the equilibrium path they can uniquely implement any desired competitive equilibrium when interest rates are used along the equilibrium path implementation requires regime switching these results are robust to imperfect information our results imply that the taylor principle is neither necessary nor sufficient for unique implementation they also provide a direction for empirical work on monetary policy rules and determinacy

debt deleveraging and the liquidity trap a fisher minsky koo approach in this paper we present a simple new keynesian style model of debt driven slumps that is situations in which an overhang of debt on the part of some agents who are forced into rapid deleveraging is depressing aggregate demand making some agents debt constrained is a surprisingly powerful assumption fisherian debt deflation the possibility of a liquidity trap the paradox of thrift a keynesiantype multiplier and a rationale for expansionary fiscal policy all emerge naturally from the model we argue that this approach sheds considerable light both on current economic difficulties and on historical episodes including japan s lost decade now in its 18th year and the great depression itself

international externalities strategic interaction and domestic politics abstract domestic politics can sometimes play an influential role when externalities have strategic and international implications if voters delegate the choice to policymakers and if individual countries independently determine their environmental policy using a consumption tax on the emissions generating good the result could be an outcome that is inferior to the one preferred by the median voter in the absence of delegation on the other hand if the international externality is unilateral in nature rather than reciprocal we find that delegation is largely irrelevant since voters choice of policymaker is no longer strategic in character similarly if voters anticipate policymakers successfully coordinating their policies at a later stage there also will be no difference between the policymakers and the median voters aggregate weighting of environmental emissions

precautionary saving over the business cycle we study the macroeconomic implications of time varying precautionary savings within a general equilibrium model with borrowing constraints aggregate shocks and uninsurable idiosyncratic unemployment risk our framework generates limited cross sectional household heterogeneity as an equilibrium outcome thereby making it possible to analyse the role of precautionary saving over the business cycle in an analytically tractable way the time series behaviour of aggregate consumption generated by our model is closer to the data than that implied by the hand to mouth and representative agent models and it is comparable to that produced by the krusell and smith 1998 model

managing credit bubbles we study a dynamic economy where credit is limited by insu cient collateral and as a result investment and output are too low in this environment changes in investor sentiment or market expectations can give rise to credit bubbles that is expansions in credit that are backed not by expectations of future pro ts i e fundamental collateral but instead by expectations of future credit i e bubbly collateral credit bubbles raise the availability of credit for entrepreneurs this

unemployment insurance and precautionary saving abstract models of precautionary saving imply that households will hold more assets when faced with greater income uncertainty however previous empirical studies of income uncertainty have produced somewhat mixed support for the precautionary saving hypothesis in this paper we note that differences in the state contingent income stream available to workers through the unemployment insurance ui program provides an excellent source of variation for testing the presence of a precautionary savings motive simulations of a stochastic life cycle model suggest that a ui system similar to the type currently in place in the u s can lead to a significant reduction in the assets accumulated by a median worker moreover there is considerable variation in the ui benefit schedules for workers living in different states in the u s which provides an exogenous source of variation for empirically testing the precautionary saving hypothesis we carry out this test using data on expected ui benefit replacement rates and financial assets held by households in the survey of income and program participation our empirical results are consistent with the predictions of the model and suggest that reducing the ui benefit replacement rate by 50 percent would increase gross financial asset holdings by 14 percent or 241 for the average worker we also find empirical evidence that this crowd out effect of ui on household saving is stronger for those facing higher unemployment risk and weaker for older workers both of which are implications from our precautionary saving model

the cyclicality of the opportunity cost of employment the flow opportunity cost of moving from unemployment to employment consists of forgone public benefits and the forgone consumption value of nonworking time we construct a time series of the opportunity cost of employment using detailed microdata and administrative or national accounts data to estimate benefits levels eligibility take up consumption by labor force status hours taxes and preference parameters the opportunity cost is procyclical and volatile over the business cycle the estimated cyclicality implies far less unemployment volatility in leading models of the labor market than that observed in the data irrespective of the level of the opportunity cost

wealth and volatility we document that in the us over the course of the past century there has been a systematic negative relation between household wealth and business cycle volatility we develop a microfounded dynamic equilibrium model that contains elements of a traditional keynesian framework in which economic uctuations can be driven by sunspot type uctuations in household optimism or pessimism the novel feature is that the scope for equilibrium uctuations due to sunspots depends on the exogenously given value of household wealth when wealth is high consumers demand is not sensitive to unemployment expectations and the economy is robust to condence crisis when wealth is low consumers demand is sensitive to unemployment expectations the economy becomes vulnerable to condence driven uctuations and is in general more volatile in this case there is a potential role for public policies to stabilize demand we conclude by providing micro economic evidence on the importance of wealth in aecting the sensitivity of demand to aggregate conditions we show that during the great recession consumers with low

strategic delegation in bargaining abstract principals have the opportunity to delegate to an agent in the context of the nash bargaining model this paper resolves a shortcoming in the related bargaining literature in equilibrium a symmetric outcome typically will not result and multiple equilibria exist

when demand creates its own supply saving traps the mechanism by which aggregate supply creates the income that generates its matching demand called say s law may not work in a general equilibrium with decentralized markets and savings in bonds or money full employment is an equilibrium but convergence to that state is slow a self fullling precautionary motive

do matching frictions explain unemployment not in bad times this paper models unemployment as the result of matching frictions and job rationing job rationing is a shortage of jobs arising naturally in an economic equilibrium from the combination of some wage rigidity and diminishing marginal returns to labor during recessions job rationing is acute driving the rise in unemployment whereas matching frictions contribute little to unemployment intuitively in recessions jobs are lacking the labor market is slack recruiting is easy and inexpensive so matching frictions do not matter much in a calibrated model cyclical fluctuations in the composition of unemployment are quantitatively large

who bears aggregate fluctuations and how the consumption of high consumption households is more exposed to fluctuations in aggregate consumption and income than that of low consumption households in the consumer expenditure cex survey the exposure to aggregate consumption growth of households in the top 10 percent of the consumption distribution in the cex is about five times that of households in the bottom 80 percent given real aggregate per capita consumption growth about 3 percentage points less than its historical mean during the past year these figures predict that the ratio of consumption of the top 10 percent to the bottom 80 percent has fallen by about 15 percentage points relative to trend using income data from piketty and saez 2003 we show that the income especially the wage income of rich households is more exposed to aggregate fluctuations so their higher income exposure is a likely contributor to their higher consumption exposure finally we find a striking change in the exposure of the incomes of high income households prior to the early 1980 s the incomes of high income households were not more exposed to aggregate fluctuations thus while high income households currently bear an inordinately large share of aggregate fluctuations this is a recent occurrence this abstract was borrowed from another version of this item

liquidity and trading dynamics in this paper we build a model where the presence of liquidity constraints tends to magnify the economy s response to aggregate shocks we consider a decentralized model of trade where agents may use money or credit to buy goods when agents do not have access to credit and the real value of money balances is low agents are more likely to be liquidity constrained this makes them more concerned about their short term earning prospects when making their consumption decisions and about their short term spending opportunities when making their production decisions this generates a coordination element in spending and production which leads to greater aggregate volatility and greater comovement across producers

fiscal policy in an unemployment crisis this paper shows that large scal multipliers arise naturally from equilibrium unemployment dynamics in response to a shock that brings the economy into a liquidity trap an expansion in government spending increases output and causes a fall in the unemployment rate since movements in unemployment are persistent the eects of current spending linger into the future leading to an enduring rise in income as an enduring rise in income boosts private demand even a temporary increase in government spending sets in motion a virtuous employment spending spiral with a large associated multiplier this transmission mechanism contrasts with the conventional view in which scal policy may be ecacious only under a prolonged and committed rise in government spending which engineers a spiral of increasing ination

animal spirits financial crises and persistent unemployment this article uses a rational expectations model with multiple equilibrium unemployment rates to explain financial crises the model has equilibria where asset prices are unbounded above i argue that this is an important feature of any rational agent explanation of a financial crisis since for the expansion phase of the crisis to be rational investors must credibly believe that asset prices could keep increasing forever with positive probability i explain the sudden crash in asset prices that precipitates a financial crisis as a large shock to expectations that leads to a permanent increase in the unemployment rate

negotiator behavior and the occurence of disputes it is generally recognized that possible gains from cooperation are not always realized because negotiating parties sometimes fail to reach agreement such negotiation failures are ex post inefficient and have long defied economist s attempts to explain them in this paper we discuss breakdowns in collective bargaining when disputes are resolved by compulsory arbitration we argue that the study of arbitration offers insights into the nature of negotiation failures which may be of general interest this abstract was borrowed from another version of this item

credit crises precautionary savings and the liquidity trap we use a model a la bewly huggett ayagari to explore the eects of a credit crunch on consumer spending households borrow and lend to smooth idiosyncratic income shocks facing an exogenous borrowing constraint we look at the economy response after an unexpected permananent tightening of this constraint the interest rate drops sharply in the short run and then adjusts to a lower steady state level this is due to the fact that after the shock a large fraction of agents is far below their target holdings of precautionary savings and this generates a large temporary positive shock to net lending we then look at the eects on output here two opposing forces are present as households can deleverage in two ways by consuming less and by working more we show that under a reasonable parametrization the eect on consumer spending dominates and precautionary behavior generates a recession if we add nominal rigidities two things happen i supply side responses are muted and ii there is a lower bound on the interest rate adjustment these two elements tend to amplify the recession caused by the credit tightening

measuring intertemporal substitution the importance of method choices and selective reporting i examine 2 735 estimates of the elasticity of intertemporal substitution in consumption eis reported in 169 published studies the literature shows strong selective reporting researchers discard negative and insignicant estimates too often which pulls the mean estimate up by about 0 5 the reporting bias dwarfs the effects of methods with the exception of the choice between micro and macro data when i correct the mean for the bias for macro estimates i get zero even though the reported t statistics are on average two the corrected mean of micro estimates of the eis for asset holders is around 0 3 0 4 calibrations greater than 0 8 are inconsistent with the bulk of the empirical evidence jel e21 c83

the perils of taylor rules abstract since john taylor s 1993 carnegie rochester conf ser publ policy39 195 214 seminal paper a large literature has argued that active interest rate feedback rules that is rules that respond to increases in inflation with a more than one for one increase in the nominal interest rate are stabilizing in this paper we argue that once the zero bound on nominal interest rates is taken into account active interest rate feedback rules can easily lead to unexpected consequences specifically we show that even if the steady state at which monetary policy is active is locally the unique equilibrium typically there exist an infinite number of equilibrium trajectories originating arbitrarily close to that steady state that converge to a liquidity trap that is a steady state in which the nominal interest rate is near zero and inflation is possibly negative journal of economic literature classification numbers e52 e31 e63

equilibrium contingent compensation in contests with delegation we consider two player contests in which each player hires a delegate who expends his effort to win a prize on the player s behalf endogenizing delegation contracts we focus on the equilibrium contracts between the players and their delegates we first show that each player s equilibrium contract is a no win no pay contract then we examine the delegates equilibrium compensation spreads effort levels probabilities of winning expected payoffs and the players equilibrium expected payoffs we show that economic rents for the delegates may exist

shopping externalities and self fulfilling unemployment fluctuations we propose a novel theory of self fulfilling fluctuations in the labor market a firm employing an additional worker generates positive externalities on other firms because employed workers have more income to spend and have less time to shop for low prices than unemployed workers we quantify these shopping externalities and show that they are sufficiently strong to create s complementarities in the employment decisions of different firms and to generate multiple rational expectations equilibria equilibria differ with respect to agents rational expectations about future unemployment we show that negative shocks to agents expectations lead to fluctuations in vacancies unemployment labor productivity and the stock market that closely resemble those observed in the us during the great recession

reporting guidelines for meta analysis in economics meta analysis has become the conventional approach to synthesizing the results of empirical economics research to further improve the transparency and replicability of the reported results and to raise the quality of meta analyses the meta analysis of economics research network has updated the reporting guidelines that were published by this journal in 2013 future meta analyses in economics will be expected to follow these updated guidelines or give valid reasons why a meta analysis should deviate from them

job uncertainty and deep recessions abstract we study a model where households are subject to uninsurable unemployment risk price setting is subject to nominal rigidities and the labor market is characterized by matching frictions and inflexible wages higher risk of job loss and worsening job finding prospects during unemployment depress goods demand because of a precautionary savings motive lower goods demand reduces job vacancies and the job finding rate producing an amplification mechanism due to endogenous countercyclical income risk amplification derives from the combination of incomplete financial markets and frictional goods and labor markets the model can account for key features of the great recession

the risk free rate in heterogeneous agent incomplete insurance economies abstract why has the average real risk free interest rate been less than one percent the question is motivated by the failure of a class of calibrated representative agent economies to explain the average return to equity and risk free debt i construct an economy where agents experience uninsurable idiosyncratic endowment shocks and smooth consumption by holding a risk free asset i calibrate the economy and characterize equilibria computationally with a borrowing constraint of one year s income the resulting risk free rate is more than one percent below the rate in the comparable representative agent economy

bargaining with noisy delegation principals delegate to an agent in the context of the nash bargaining model but communicate instructions to their agents imperfectly numerical methods are used to find a unique equilibrium in the principals strategies agents fail to agree with a positive probability invoking a secondary mechanism for the resolution of disputes such as arbitration comparative statics are informative the risk sensitivity of the nash bargaining solution is mitigated but not eliminated as uncertainty goes to zero a stable unique limiting equilibrium is identified from the set of multiple equilibria identified in a model in which principals delegate without trembles

reconciling hayek s and keynes views of recessions recessions often happen after periods of rapid accumulation of houses consumer durables and business capital this observation has led some economists most notably friedrich hayek to conclude that recessions often reflect periods of needed liquidation resulting from past over investment according to the main proponents of this view government spending or any other form of aggregate demand policy should not be used to mitigate such a liquidation process as doing so would simply result in a needed adjustment being postponed in contrast ever since the work of keynes many economists have viewed recessions as periods of deficient demand that should be countered by activist fiscal policy in this paper we reexamine the liquidation perspective of recessions in a setup where prices are flexible but where not all trades are coordinated by centralized markets the model illustrates why liquidations likely cause recessions characterized by deficient aggregate demand and accordingly suggests that keynes and hayek s views of recessions may be closely linked in our framework interventions aimed at stimulating aggregate demand face a trade off whereby current stimulus postpones the adjustment process and therefore prolongs the recessions but where some stimulative policies may nevertheless remain desirable

the role of automatic stabilizers in the u s business cycle most countries have automatic rules in their tax and transfer systems that are partly intended to stabilize economic uctuations this paper measures how eective they are at lowering the volatility of u s economic activity we identify seven potential stabilizers in the data and include four theoretical channels through which they may operate in a business cycle model calibrated to the u s data the model is used to compare the volatility of output in the data with counterfactuals where some or all of the stabilizers are shut down our rst nding is that proportional taxes like sales property and corporate income taxes contribute little to stabilization our second

macroeconomic fluctuations with hank sam an analytical approach new keynesian models with unemployment and incomplete markets are rapidly becoming a new workhorse model in macroeconomics such models typically require heavy computational methods which may obscure intuition and overlook equilibria we present a tractable version which can be characterized analytically our results highlight that ndue the interaction between incomplete markets sticky prices and endogenous unemployment risk nproductivity shocks may have radically di erent e ects than in traditional nk models that the taylor principle may fail and that pessimistic beliefs may be self fulolling and move the economy into temporary episodes of low demand and high unemployment as well as into a long lasting iunemployment trapi at the zero lower bound the presence of endogenous unemployment risk can create inaation and overturn paradoxical properties of the model we further study onancial asset prices and show that non negligible risk premia emerge

pathways for environmental evaluation a walk in the hanging gardens of babylon the paper gives a methodological overview of the valse project which was a european programme of research into valuation procedures for aiding the formulation and evaluation of sustainability policy a notion of valuation from the point of view of complexity is built up through emphasising the permanent co existence of multiple perspectives and more particularly the permanent possibility of shifts in perspective scientific enquiries and analyses are tested validated or invalidated partly by reference to internal norms of coherence and rigour and partly by reference to external considerations relating to the particular social and ecological context of the enquiry through reference to the four valse case studies it is shown how the application of a chosen method of analysis structures the enquiry while the researcher also learns about the reality through listening to what is said about the situation and about the research method itself from other points of view this demonstrates an approach to the design and implementation of environmental valuation studies that fully reconciles scientific and political dimensions of a social science process 2000 elsevier science b v all rights reserved