sovereign default risk and volatility abstract in a model of sovereign debt with endogenous default we find a non monotonic relationship between default risk and volatility reflecting a trade off between prudence and the insurance value of default we show that this feature also holds in the data

default risk and risk averse international investors abstract this paper develops an endogenous default risk model for small open economies that interact with risk averse international investors whose preferences exhibit decreasing absolute risk aversion dara by incorporating risk averse investors who trade with an emerging economy the present model explains a larger proportion and volatility of the spread between sovereign bonds and riskless assets than the standard model with risk neutral investors the paper shows that if investors have dara preferences then the emerging economy s default risk capital flows and bond prices are a function not only of the fundamentals of the economy but also of the level of financial wealth and risk aversion of international investors in particular as investors become wealthier or less risk averse the emerging economy becomes less credit constrained as a result the emerging economy s default risk is lower and its bond prices and capital inflows are higher additionally with risk averse investors the risk premium in the asset prices of the sovereign countries can be decomposed into two components a base premium that compensates the investors for the probability of default and an excess premium that compensates them for taking the risk of default

news and sovereign default risk in small open economies this paper builds a unified model of sovereign debt default risk and news shocks news shocks improve the quantitative performance of the sovereign default model in a number of empirically relevant dimensions first with news shocks not all defaults occur during downturns second the news shocks help account for key differences between developing and more developed economies as the precision of news improves the model predicts lower variability of consumption less countercyclical trade balance and interest rate spreads as well as a higher level of debt in line with more developed economies third the model captures the hump shaped relationship between default rates and the precision of news obtained from the data finally the news shocks have a nonmonotonic effect on welfare

agent compensation and the limits of bonding agents in positions of trust may engage in malfeasance which is difficult to detect this paper develops a model in which employers seek to control malfeasance by paying wages contingent on imperfect monitoring and agents may be required to pay entry fees or post bonds we conclude that entry fees which exceed agents assets are ineffective in controlling malfeasance as a result conditions exist in which it is optimal to pay agents more than their opportunity cost such conditions lead to an excess supply of applicants and allow employers to engage in discrimination at zero cost to themselves

implicit contracts moral hazard and unemployment this paper considers a firm whose marginal revenue product of labor is a random variable we derive the form of an optimal long term contract between workers and the firm under the assumption that labor s marginal product is observed by the firm but not by the workers we show that the existence of asymmetric information causes unemployment to be greater than in a situation where information about labor s marginal product is public or where employment is determined in spot markets in particular unemployment can occur when the marginal product of labor exceeds the reservation wage

communicating subjective evaluations consider managers evaluating their employees performances should managers justify their subjective evaluations suppose a manager s evaluation is private information justifying her evaluation is costly but limits the principal s scope for distorting her evaluation of the employee i show that the manager justifies her evaluation if and only if the employee s performance was poor the justification assures the employee that the manager has not distorted the evaluation downwards for good performance however the manager pays a constant high wage without justification the empirical literature demonstrates that subjective evaluations are lenient and discriminate poorly between good performance levels this pattern was attributed to biased managers i show that these effects occur in optimal contracts without any biased behavior

sovereign debt as a contingent claim a quantitative approach abstract we construct a dynamic equilibrium model with contingent service and adverse selection to quantitatively study sovereign debt in the model benefits of defaulting are tempered by higher future interest rates for a wide set of parameters the only equilibrium is one in which the sovereign defaults in all states additional output losses however sustain equilibria that resemble the data we show that due to the adverse selection problem some countries choose to delay default to reduce loss of reputation moreover although equilibria with no default imply greater welfare levels they are not sustainable in highly indebted and volatile countries

a quantitative model of sovereign debt bailouts and conditionality in times of sovereign debt crises international financial institutions provide temporary financial support contingent on the implementation of specific macroeconomic policies this paper develops a model of sovereign debt and default with endogenous participation rates in bailout programs conditionality enters as a constraint on fiscal policy in the model the insurance character of bailouts generates incentives for debt accumulation quantitative results suggest that bailouts prevent sovereign defaults in the short run but may come at a cost of a greater default probability in the long run increasing the intensity of conditionality lowers the bailout participation rate and generates a hump shaped pattern of sovereign default risk

reputation and hierarchy in dynamic models of employment the employment relationship with employees ability and their actions both private information thus combining adverse selection with moral hazard is modeled as a repeated game with self enforcing contracts being perfect bayesian nash equilibria under termination contracts the equilibrium contract structure consists of a hierarchy of ranks finite in number even though ability is continuous reputation acts as an effective device for worker discipline without the need for involuntary unemployment selection by bonding is not in general incentive compatible but selection by promotion of employees through the ranks is many other features correspond to observed employment structures

uncertainty and incentives empirical work testing for a trade off between risk and incentives has had at best mixed success this article provides two simple reasons associated with subjectivity of performance appraisals why we might not expect to see any negative relationship both reasons relate to empirically observed problems associated with monitoring i supervisors sometimes bias their evaluations based on their personal feelings toward their subordinates and ii supervisors will sometimes offer evaluations that reduce their costs these aspects of monitoring are ignored in the standard model and can reverse the usual negative trade off between risk and incentives

default settlement and signalling lending resumption in a reputational model of sovereign debt this paper develops a simple model of sovereign debt in which defaulting nations are excluded from capital markets and regain access by making partial repayments this implication of the model is consistent with the historical evidence that defaulting countries return to international loan markets soon after a settlement but after varying periods of exclusion copyright 1995 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

the dynamics of sovereign default risk and political turnover abstract this paper develops a stochastic dynamic politico economic model of sovereign debt to analyze the interaction of sovereign default risk and political turnover two parties differ in their preferred size of unproductive public spending which is financed by taxes and external debt electoral outcomes are characterized by the economic benefits from the incumbent s policies and stochastic idiosyncratic ideological aspects quantitative findings suggest that endogenous political turnover increases the discrepancies between the optimal borrowing and default policies of the two parties prior to a debt crisis the incumbent government accumulates external debt to foster the probability of remaining in power the dynamic interaction of electoral outcomes external debt and sovereign default supports arguments for imposing institutional constraints on incumbent governments

sovereign debt sustainability in advanced economies we develop a measure of maximum sustainable government debt for advanced economies how much investors are willing to lend to a country s government depends on the country s expected primary surplus the level and volatility of its rate of growth and how much debt the government expects to be able to raise in the future for the purpose of servicing the debt it seeks to raise today we provide a simple formula that computes a country s maximum sustainable debt msd as a function of four easy to estimate parameters we further compute a country s theoretical probability of default pd as a function of its debt to gdp ratio we nally calibrate our measures for 23 oecd countries and test the relation between sovereign yield spreads and our theoretical pd at prevailing debt levels we nd it to be strongly statistically signicant jel h63

subjective performance measures in optimal incentive contracts objective measures of performance are seldom perfect in response incentive contracts often include important subjective components that mitigate incentive distortions caused by imperfect objective measures this paper explores the combined use of subjective and objective performance measures in respectively implicit and explicit incentive contracts naturally objective and subjective measures often are substitutes sometimes strikingly so we show that if objective measures are sufficiently close to perfect then no implicit contracts are feasible because the firm s fallback position after reneging on an implicit contract is too attractive we also show however that objective and subjective measures can reinforce each other if objective measures become more accurate then in some circumstances the optimal contract puts more weight on subjective measures because the improved objective measures increase the value of the ongoing relationship and so reduce the firm s incentive to renege we also analyze the use of subjective weights on objective performance measures and provide case study evidence consistent with our analyses

recent developments in quantitative models of sovereign default the current crisis and discussions in the euro area in particular show that sovereign debt crises defaults are no longer confined to developing economies following crises in many latin american countries the literature on quantitative dynamic macro models of sovereign default has been advancing rapidly current debate should take note of the findings of this literature an extensive overview of which has been provided in this paper this paper also discusses the inherent difficulties as well as possibilities of integrating this type of model into standard business cycle models rbc and dsge models this is likely to be particularly helpful when using models to analyse upcoming issues in the euro area such as a suitable sovereign insolvency law or the assumption of joint liability

debt dilution and sovereign default risk we measure the effects of debt dilution on sovereign default risk and study debt covenants that could mitigate these effects we calibrate a baseline model with endogenous debt duration and default risk in which debt can be diluted using data from spain we find that debt dilution accounts for 78 percent of the default risk in the baseline economy and that eliminating dilution increases the optimal duration of sovereign debt by almost 2 years eliminating dilution also increases consumption volatility but still produces welfare gains the debt covenants we study could help enforcing fiscal rules

consumer bankruptcy a fresh start consumer bankruptcy provides partial insurance against bad luck but by driving up interest rates makes life cycle smoothing more difficult we argue that to assess this trade off one needs a quantitative model of consumer bankruptcy with three key features life cycle component idiosyncratic earnings uncertainty and expense uncertainty exogenous negative shocks to household balance sheets we find that transitory and persistent earnings shocks have very different implications for evaluating bankruptcy rules more persistent shocks make the bankruptcy option more desirable larger transitory shocks have the opposite effect our findings suggest the current us bankruptcy system may be desirable for reasonable parameter values jel d14 d91 k35

welfare implications of the bankruptcy reform act of 1999 abstract in recent years personal bankruptcy has become an important issue to consumers creditors and legislators alike over 40 billion dollars of unsecured debt were discharged in 1998 by 1 44 million households these losses have led legislators to propose a variety of changes in bankruptcy law the most important and recent of which is the bankruptcy reform act of 1999 ba99 i develop a dynamic stochastic general equilibrium model of personal bankruptcy to investigate the trade off between the consumption smoothing role of bankruptcy and the interest rate and deadweight costs it imposes i find that stringent means tests would reduce filing rates only slightly and would have only modest welfare consequences on the other hand the elimination of bankruptcy altogether is found to have substantial benefits this result is robust to income shock persistence and to stringency in the application of means tests

the existence of self enforcing implicit contracts implicit contracts are nontrivial nash equilibria to the post hiring trading game between a worker and the employer these are supported by intrafirm rather than labor market reputations the existence of an implicit contract that supports efficient trade is proved in a simple model

gift giving and worker productivity evidence from a firm level experiment abstract we present results from a field experiment designed to measure worker response to a monetary gift from their employer the experiment took place inside a tree planting firm paying its workforce incentive contracts firm managers told a crew of tree planters they would receive a pay raise for one day as a result of a surplus not attributable to past planting productivity we compare planter productivity the number of trees planted per day on the day the gift was handed out with productivity on previous and subsequent days of planting on the same block and thus under similar planting conditions we find direct evidence that the gift had a significant and positive effect on daily planter productivity controlling for planter fixed effects weather conditions and other random daily shocks

discretionary rewards as a feedback mechanism abstract this paper studies the use of discretionary rewards in a finitely repeated principal agent relationship with moral hazard the key aspect is that rewards have informational content when the principal obtains a private subjective signal about the agent s performance she may pay discretionary bonuses to provide credible feedback to the agent in accordance with the often observed compression of ratings we show that in equilibrium the principal communicates the agent s interim performance imperfectly i e she does not fully differentiate good and bad performance furthermore we show that small rewards can have a large impact on the agent s effort provided that the principal s stake in the project is small

managerial incentive problems a dynamic perspective the paper studies how a person s concern for a future career may influence his or her incentives to put in effort or make decisions on the job in the model the person s productive abilities are revealed over time through observations of performance there are no explicit output contingent contracts but since the wage in each period is based on expected output and expected output depends on assessed ability an implicit contract links today s performance to future wages an incentive problem arises from the person s ability and desire to influence the learning process and therefore the wage process by taking unobserved actions that affect today s performance the fundamental incongruity in preferences is between the individual s concern for human capital returns and the firm s concern for financial returns the two need be only weakly related it is shown that career motives can be beneficial as well as detrimental depending on how well the two kinds of capital returns are aligned it is well understood by now that informational externalities may place special demands on the organization of economic exchange simple price mediated markets will frequently fail in the presence of asymmetric information in that case more elaborate contractual arrangements have to be used as substitutes for the price system lately considerable effort has been devoted to the analysis of contracting under incomplete information with the objective to understand the range of economic institutions that emerge in response to the failure of the price system the analysis of moral hazard has played a prominent role in this development moral hazard problems arise when for some reason or another transacting parties cannot contract contingent on the delivery of the good for instance in buying labour services it may be that the amount of labour supplied is not directly observable precluding a simple exchange of wage for labour as a partial remedy to this problem an imperfect mutually observed signal about the supply of labour can be used as a proxy in the contract frequently output is taken as such a proxy the drawback is that output is often influenced by other factors than labour input which induce undesirable risk into the contract one is therefore faced with a tradeoff between allocating risk associated with incomplete observability and providing incentives for a proper supply of labour gaining insight into this tradeoff is important not only for understanding contracting in the small e g managerial incentive schemes but also because it is closely related to the fundamental tension between equity and efficiency in the society as a whole while our understanding of moral hazard has advanced a lot in past years it is clear that much work remains an important question that has received little attention until

the interaction of implicit and explicit contracts in repeated agency abstract in a repeated principal agent model in which the agent s actions are observable to the principal but not verifiable in court the agent s incentives derive both from salary payments based on verifiable signals and from implicit promises by the principal of bonuses for good behavior explicit short term contracts are designed to enhance the effectiveness of the infinite horizon implicit contract between principal and agent in a constrained efficient equilibrium bonuses smooth the consumption path of the risk averse agent by moving in the opposite direction from salaries total consumption and expected discounted utility for the rest of the game journal of economic literature classification numbers c7 c73 d8

interim performance feedback in multistage tournaments the optimality of partial disclosure workers competing in a tournament for a prize e g a promotion often perform sequentially in multiple stages when the firm is privately informed about the workers performance it can sharpen incentives by strategically disclosing the intermediate results but the policies that enhance final stage effort may dampen incentives at the intermediate stage in our model the optimal disclosure policy has a simple form disclose only if all workers perform poorly this result offers a novel justification for partial disclosure in performance feedback also it contrasts with the existing literature that focuses on the extreme policies of full disclosure and no disclosure

the information content of losses abstract this study hypothesizes that because shareholders have a liquidation option losses are not expected to perpetuate they are thus less informative than profits about the firm s future prospects the results are consistent with the hypothesis they also show that the documented increase in the earnings response coefficent as the cumulation period increases appears to be due exclusively to the effect of losses the liquidation option effect extends to profitable cases where earnings are low enough to make the option attractive alternating explanations for the low informativeness of losses such as mean reversal of earnings are not supported by the tests

relational incentive contracts standard incentive theory models provide a rich framework for studying informational problems but assume that contracts can be perfectly enforced this paper studies the design of self enforced relational contracts i show that optimal contracts often can take a simple stationary form but that self enforcement restricts promised compensation and affects incentive provision with hidden information it may be optimal for an agent to supply the same inefficient effort regardless of cost conditions with moral hazard optimal contracts involve just two levels of compensation this is true even if performance measures are subjective in which case optimal contracts terminate following poor performance jel c73 d82 l14

public service motivation as an argument for government provision a public service motivation psm inclines employees to provide effort out of concern for the impact of that effort on a valued social service though deemed to be important in the literature on public administration this motivation has not been formally considered by economists when a psm exists this paper establishes conditions under which government bureaucracy can better obtain psm motivated effort from employees than a standard profit maximizing firm the model also provides an efficiency rationale for low powered incentives in both bureaucracies and other organizations producing social services 2000 elsevier science s a all rights reserved

contracting with repeated moral hazard and private evaluations a repeated moral hazard setting in which the principal privately observes the agent s output is studied the optimal contract for a finite horizon is characterized and shown to require burning of resources these are only burnt after the worst possible realization sequence and the amount is independent of both the length of the horizon and the discount factor for the infinite horizon it is shown that there is no loss from restricting the analysis to contracts in which the agent receives a constant efficiency wage and no feedback until he is fired furthermore optimal contracts cannot be replicated by short term contracts a family of fixed interval review contracts is characterized longer review intervals are preferable but harder to implement comparative statics on the review length are carried out finally these contracts are shown approximate first best if players are very patient jel d82 d86

sovereign default private sector creditors and the ifis abstract the data reveal that emerging market sovereign borrowing from international financial institutions ifis is small intermittent and countercyclical compared to that from private sector creditors the ifi loan contracts offered to sovereigns differ from the private ones in that they are more enforceable and have conditionality arrangements attached to them taking these contractual differences as given this paper builds a quantitative model of a sovereign borrower and argues that better enforceability of ifi loan contracts is the main institutional feature that explains the size and cyclicality while conditionality accounts for the intermittency of borrowing from the ifis

global growth opportunities and market integration we propose an exogenous measure of a country s growth opportunities by interacting the country s local industry mix with global price to earnings pe ratios we find that these exogenous growth opportunities predict future changes in real gdp and investment in a large panel of countries this relation is strongest in countries that have liberalized their capital accounts equity markets and banking systems we also find that financial development external finance dependence and investor protection measures are much less important in aligning growth opportunities with growth than is capital market openness finally we formulate new tests of market integration and segmentation by linking local and global pe ratios to relative economic growth in a perfectly integrated world economy capital should be invested where it

distributional incentives in an equilibrium model of domestic sovereign default the european debt crisis shares features of historical episodes of outright default on domestic public debt about which little research has been done this paper proposes a theory of domestic sovereign default in which a government chooses debt and default optimally responding to distributional incentives affecting the welfare of risk averse agents who are split into debt holders and non holders equilibria with debt do not exist if the government is utilitarian and default is costless adding exogenous default costs the model supports equilibria with debt exposed to default risk in which debt falls as the fraction of agents who own the debt falls debt can also be sustained if the government s welfare weights are biased in favor of bond holders resulting in equilibria in which debt rises as debt ownership is more concentrated these results are robust to adding a second asset opening the economy to foreign investors or introducing taxes as an alternative redistributive policy instrument

sovereign defaults information investment and credit abstract why would a sovereign government immune from bankruptcy procedures and with few assets that could be seized in the event of a default ever repay foreign creditors and correspondingly why do foreign creditors lend to sovereigns this paper finds general conditions under which even in the absence of sanctions lending to sovereigns can emerge in a single shot game furthermore it shows that positive borrowing can be sustained both in pooling and separating equilibria in this way it makes clear that neither sanctions nor reputation considerations the two classical explanations are necessary to enforce repayment information revelation is the crucial mechanism for these results the repayment default decision is interpreted as a signal used by the government to communicate information to domestic and foreign agents about the fundamentals of the economy governments repay to affect agents expectations about them a default through its effect on expectations about fundamentals can generate a decline in foreign and domestic investment and a credit crunch in domestic credit markets governments repay to avoid these costs but may default in equilibrium when hit by a negative shock

a theory of political cycles abstract we study how the proximity of elections affects policy choices in a model in which policymakers want to improve their reputation to increase their reelection chances policymakers equilibrium decisions depend on both their reputation and the proximity of the next election typically incentives to influence election results are stronger closer to the election for a given reputation level as argued in the political cycles literature and these political cycles are less important when the policymaker s reputation is better our analysis sheds light on other agency relationships in which part of the compensation is decided upon infrequently

incentives between firms and within this paper reviews the significant progress in agency theory i e the economic theory of incentives during the 1990s with an eye toward applications to supply transactions i emphasize six recent models in three pairs 1 new foundations for the theory of incentive contracts 2 new directions in incentive theory and 3 new applications to supply transactions by reviewing these six models i hope to establish three things first the theory of incentive contracts needed and received new foundations second new directions in incentive theory teach us that incentive contracts are not the only source of incentives finally and especially relevant to supply transactions the integration decision is an instrument in the incentive problem

productive low morale abstract this paper models employment relationship as a repeated principal agent problem with private evaluation the efficient contracts exhibit correlated movements between lagged wage and current effort that are consistent with the positive feedback between pay and morale in practice low morale therefore is an integral part of a well functioning relationship

labor market distortions under sovereign debt default crises risk of sovereign debt default has frequently affected emerging market and developed economies such financial crisis are often accompanied with severe declines of employment that are hard to justify using a standard dynamic stochastic model in this paper i document that a labor wedge deteriorates substantially around swift reversals of current accounts or default episodes i propose and evaluate two different explanations for these movements by linking the wedges to changes in labor taxes and in the cost of working capital with these two features included a dynamic model of equilibrium default is able to replicate the behavior of the labor wedge observed in the data around financial crisis in the model higher interest rates are propagated into larger costs of hiring labor through the presence of working capital as an economy is hit with a stream of bad productivity shocks the incentives to default become stronger thus increasing the cost of debt this reduces firm demand for labor and generates a labor wedge a similar effect is obtained with a counter cyclical tax rate policy the model is used to shed light on the recent events of the euro area debt crisis and in particular of the greek default event

earnings as an explanatory variable for returns in this paper we investigate whether the level of earnings divided by price at the beginning of the stock return period is relevant for evaluating earnings returns associations the primary model motivating this research relies on the idea that book value owners equity and market value are both stock variables indicating the wealth of the firm s equity holders the related flow variables after adjusting for dividends are respectively earnings divided by price at the beginning of the return period a p 1 and market returns it then follows that earnings divided by beginning of period price should be associated with stock returns although models based on a relation between market value and book value are used occasionally in the accounting research literature see for example landsman 1986 harris and ohlson 1987 and barth

the provision of incentives in firms i ncentives are the essence of economics despite many wide ranging claims about their supposed importance there has been little empirical assessment of incentive provision for workers the purpose of this paper is to critically overview existing work on the provision of incentives since the interests of workers and their employers are not always aligned a large theoretical literature has emphasized how firms design compensation contracts to induce employees to operate in the firm s interest this literature has reached into many areas of compensation and has pointed to a multitude of different mechanisms that can be used to induce workers to act in the interests of their employers these include piece rates options discretionary bonuses promotions profit sharing efficiency wages deferred compensation and so on my objective here is to evaluate this literature in the light of a growing empirical literature on compensation where possible i will address the literature from two perspectives first an underlying assumption of this literature is that individuals respond to contracts that reward performance accordingly i consider whether agents behave in this way and whether these responses are always in the firm s interest second i address whether firms write contracts with these responses in mind in other words do contracts look like the predictions of the theory incentives are provided to workers

the political economy of sovereign defaults abstract how do income distribution and the tax system affect sovereign borrowing and default decisions are these effects shaped by the political constraints that governments face when raising revenues to repay the debt to address these questions we incorporate agent heterogeneity in terms of income distribution and tax burden and a political support constraint into a standard dsge model of sovereign default the results show that income inequality and regressive taxes make defaults more likely for a given level of debt while they reduce sovereign borrowing in equilibrium tighter political support requirements reinforce these effects

work incentives hierarchy and internal labor markets this paper argues that contracts with payment based on a ranking of employee performance can provide performance incentives even under asymmetric information that prevents payment based on individual performance only being enforceable such contracts also fit with five features of labor markets that have aroused considerable interest 1 hierarchical wage structures 2 internal promotion 3 wage rates that rise with seniority and experience more than productivity 4 the variance of earnings increasing with experience and 5 wage rates attached to jobs rather than individuals with differentials set by administrative procedures rather than by reference to external market wages

endogenous political turnover and fluctuations in sovereign default risk abstract a sovereign default model in which the sovereign derives private benefits from public office and contests elections to stay in power is developed the economy s growth process is modeled as a markov switching regime which is shown to be a better description of the data for our set of emerging economies in the model consistent with evidence the sovereign is less likely to be reelected if economic growth is weak in the low growth regime there is higher probability of loss of private benefits due to turnover which makes the sovereign behave more myopically this growth linked variation in effective discount factor is shown to be important in generating volatility in sovereign spreads

subjective evaluations with performance feedback this paper models two key roles of subjective performance evaluations their incentive role and their feedback role the paper shows that the feedback role makes subjective pay feasible even without repeated interaction as long as there exists some veri able measure of performance it also shows that while subjective pay is helpful it cannot achieve full e ciency however fully e cient incentives are achievable if the rm can commit to a forced distribution of evaluations and employs a continuum of workers with a small number of workers a forced distribution is valuable only if the veri able measure is poor

endogenous verifiability and relational contracting for contracting parties it will often be uncertain whether a legal court is able to enforce the real intents of their contract the strict requirements of verifiability make it costly if not impos sible for parties to arrange their transactions and design their contract in a way that makes it completely protected by the court a way out is then to rely on self enforcing relational con tracts through repeated transactions the parties can make it costly for each other to breach the contract by letting breach ruin future trade but the self enforcing range of contracts is limited so the court s ability to enforce a contract is not without consequence for the contracting parties if possible the parties may thus have incentives to take costly actions that affect the ability of the court both ex ante preparations in terms of detailed contracting and ex post revelation of informa tion can increase the probability of fair court enforcement in this paper we focus on the former assuming that the parties are able to improve the verifiability of the contracted actions by care ful ex ante contract specifications we assume that careful contracting can improve the court s ability to verify whether an action conforms to the one described in the contract then we ask what happens to the self enforcing contract equilibrium if a party takes actions ex ante that affect the probability of verification in order to provide some answers we analyze a simple repeated principal agent game where the verifiability of the agent s actions is endogenously determined by the principal s investments in drafting an explicit contract pertaining to the quality of the agent s output the model makes it possible to identify some subtle effects of two key enforcement devices legal courts and repeated interaction note that by endogenizing verifiability we also endog enize the degree of contractual incompleteness and the equilibrium level of incompleteness will depend on the verification technology i e the resource costs that are necessary to achieve various verifiability levels this verification technology will be influenced in an essential way by the quality of courts in fact we can use the model to study relationships between two distinct aspects of courts namely their ability which influences the verification technology and their predictability which manifests itself in the equilibrium level of verifiability i e the probability with which the court in fact will verify the relevant action the repeated game approach formalizes an economic concept of trust and trustworthiness since a party honors trust if the present value of honoring exceeds the present value of abusing it the discount factor is then a proxy for the trust level in the relationship by studying the effect of variations in verification technology and the discount factor we can gain insight into the rela tionship between court ability explicit contracting trust and relational contracting below we summarize the results

relational contracts and the value of relationships this article studies optimal relational contracts when the value of the relationship between contracting parties is not commonly known i consider a principal agent setting where the principal has persistent private information about her outside option i show that if the principal has the bargaining power she wants to understate her outside option to provide strong incentives and then renege on promised payments while if the uninformed agent has the bargaining power the principal wants to overstate her outside option to capture more surplus i characterize how information is revealed how the relationship evolves and how this depends on bargaining power jel c78 d82 d83 d86

unemployment and the efficiency wage hypothesis there has been much recent discussion of the reasons why prices in certain markets and in particular in labour markets may not adjust to eliminate excess supply the absence of speedy adjustment of prices is an essential feature of the recent models of disequilibrium macroeconomics but for the most part no explanation for this absence is provided from within those models one explanation that has been around in the literature for some time and has been receiving increasing attention recently is the efficiency wage hypothesis initially applied to developing economies see leibenstein i957 it has more recently been adapted to developed economies by weiss i 980 and used in the context of a keynesian macroeconomic model by hart i 980 similar concepts have been applied to the credit market by stiglitz and weiss i98i the purpose of the present paper is to explore further the conditions under which the notion of an efficiency wage is applicable and can provide an explanation of involuntary unemployment the essential feature of the efficiency wage hypothesis is that the productivity of a firm s employees increases as their wage is increased at least over an economically relevant part of its range if the wage paid by the firm is denoted by w the number of employees by l and the productivity of each employee by p w where p w o then the effective labour force of the firm e can be represented by

decentralized borrowing and centralized default abstract in the past foreign borrowing by developing countries was comprised almost entirely of government borrowing however private firms and individuals in developing countries now borrow substantially from foreign lenders it is often asserted that this surge in private sector borrowing generates excessive borrowing and frequent sovereign defaults in developing countries this paper analyzes the impact of decentralized borrowing using a quantitative model in which private agents decide how much to borrow and the government decides whether to default relative to a model in which the government determines both the level of borrowing and whether to default decentralized borrowing drives up aggregate credit costs and sovereign default risk and reduces aggregate welfare interestingly decentralized borrowing may lead to either too much or too little debt in equilibrium depending on the severity of default penalties

sovereign default interest rates and political uncertainty in emerging markets abstract a large body of the empirical literature shows that high turnover rates length of tenure of policymakers and the degree of conflict within a country affects sovereign spreads debt and default rates we help to rationalize such claims by including these political features in a dynamic stochastic small open economy model of sovereign debt and default in this way we offer a complementary approach to the econometric analyses in the literature consistent with the data the quantitative analysis shows that politically unstable and more polarized economies experience higher default rates and larger level and volatility of sovereign interest rate spreads

toward an economic theory of leadership leading by example this paper explores leadership within organizations leadership is distinct from authority because following a leader is a voluntary rather than coerced activity of the followers this paper considers how a leader induces rational agents to follow her in situations when the leader has incentives to mislead them copyright 1998 by american economic association

do wage cuts damage work morale evidence from a natural field experiment employment contracts are often incomplete leaving many responsibilities subject to workers discretion high work morale is therefore essential for sustaining voluntary cooperation and high productivity in firms we conducted a field experiment to test whether workers reciprocate wage cuts and raises with low or high work productivity wage cuts had a detrimental and persistent impact on productivity reducing average output by more than 20 percent an equivalent wage increase however did not result in any productivity gains the results from an additional control experiment with high monetary performance incentives demonstrate that workers could still produce substantially more output leaving enough room for positive reactions altogether these results provide evidence consistent with a model of reciprocity as opposed to inequality aversion

consumption savings decisions with quasi geometric discounting we study the consumption savings problem of an infinitely lived rational consumer who has time inconsistent preferences in the form of quasi geometric discounting the consumer operates a weakly concave production function and must simply divide current resources into current consumption and savings there is no uncertainty a solution to the consumer s problem is a subgame perfect equilibrium of a dynamic game between the consumer s successive selves we show that this game has a continuum of equilibria in stationary markov strategies not only is the stationary point of the consumer s asset holdings indeterminate but each stationary point has a continuum of dynamic paths converging to it the savings policy rules underlying these dynamic paths are step functions

optimal contracting with subjective evaluation this paper extends the standard principal agent model to allow for subjective evaluation the optimal contract results in more compressed pay relative to the case with verifiable performance measures moreover discrimination against an individual implies lower pay and performance suggesting that the extent of discrimination as measured after controlling for performance may underestimate the level of true discrimination finally the optimal contract entails the use of bonus pay rather than the threat of dismissal hence neither efficiency wages nor the right to dismiss an employee are necessary ingredients for an optimal incentive contract

sovereign default and capital accumulation i introduce endogenous capital accumulation into an otherwise standard quantitative sovereign default model in the tradition of eaton and gersovitz 1981 and find that conditional on a level of debt default incentives are u shaped in the capital stock the economy with too small or too large amounts of capital is likely to default in addition to an excusable motive for default in line with grossman and huyck 1989 our model also predicts an opportunistic motive for default in line with kehoe and levine 1993 the model predicts the opportunistic motive for default because 1 capital is used as a consumption insurance vehicle during autarky after default 2 installed capital within the border cannot be seized by foreign lenders and 3 our model does not use an ad hoc output cost of default which only penalizes default in high income states the two different motives for default allow the calibrated model to generate defaults in good and bad times in simulation with a frequency of 38 and 62 respectively this is consistent with tomz and wright 2007 s empirical finding that throughout history and across countries around one third of sovereign defaults occurred in good times when output is above trend whereas most defaults occur in bad times the model is calibrated to the business cycle moments of argentina and simulation results show that the model matches business cycle facts regarding emerging economies along other dimensions moreover simulation results show that default in good times occurs 1 after the economy has accumulated a significantly large amount of capital and 2 when the economy faces a modestly good shock both of which reduce the value of external borrowing but increase the value of staying in autarky on the other hand around defaults in bad times the model economy displays typical v shape economic dynamics with a collapse in absorption upon default especially investment aggregating quarterly data from the model into annual frequency is found to overestimate the fraction of defaults in good times around twofold

implicit contracts and the explanatory power of top executive compensation for future performance recent research suggests that implicit incentive contracts may be based on performance measures that are observable only to the contracting parties we derive and test implications of this insight for the relationship between executive compensation and firm performance if corporate boards optimally use both observable and unobservable to outsiders measures of executive performance and the unobservable measures are correlated with future firm performance then unexplained variation in current compensation should predict future variation in firm performance further compensation should be more positively associated with future performance when observable measures are less useful for contracting our results are consistent with these hypotheses

incentives equality and contract renegotiations theory and evidence in the chinese banking industry renegotiation plays an important role in contract theory but the empirical study of renegotiation is almost non existent in the literature using a unique dataset from the chinese banking industry we find that the large majority of managerial incentive contracts are renegotiated after performances are realized we develop a model of contract renegotiation where supervisors and managers sign incentive contracts and then renegotiate them in the unique equilibrium of the model incentive contracts are almost always renegotiated ex post even though renegotiation is fully anticipated incentive contracts affect performance the predictions of the model find strong support from our empirical results

countervailing incentives in agency problems abstract we analyze countervailing incentives in agency problem countervailing incentives exist when the agent has an incentive to understate his private information for some of its realizations and to overstate it for others when countervailing incentives arise pooling generally characterizes the equilibrium contract furthermore performance is distorted both above and below efficient levels in addition the agent s rents generally increase with the realization of his private information over some ranges and decrease over other ranges we demonstate that the creation of countervailing incentives can enhance aggregate welfare

heterogeneous borrowers in quantitative models of sovereign default we extend the model used in recent quantitative studies of sovereign default allowing policymakers of different types to stochastically alternate in power we show that a default episode may be triggered by a change in the type of policymaker in office and that such a default is likely to occur only if there is enough political stability and if policymakers encounter poor economic conditions under high political stability political turnover enables the model to generate a weaker correlation between economic conditions and default decisions a higher and more volatile spread and lower borrowing levels after a default episode

u s consumer bankruptcy choice the importance of general equilibrium effects abstract we study the implications of u s personal bankruptcy rules for resource allocation and welfare our analysis shows that general equilibrium considerations along with bankruptcy chapter choice and production matter crucially for the effects of policy reform contrary to previous work we find that completely eliminating bankruptcy provisions causes significant declines in output and welfare by reducing capital formation and labor input furthermore subjecting chapter 7 filers to means testing as suggested by recent legislative proposals would not improve upon current bankruptcy provisions and at best leave aggregate filings output and welfare unchanged however we do find that an alternative tightening of chapter 7 in the form of lower asset exemptions can increase economic efficiency

incomplete contracts and signaling this article presents a principal agent model in which asymmetric information leads to contractual incompleteness i show that in the presence of transactions costs incompleteness may act as a signal of the principal s type two types of transactions costs are considered those incurred ex ante drafting costs and those incurred ex post enforcement or verification costs i prove that in the presence of either of these costs asymmetric information leads to more contractual incompleteness than full information does

long duration bonds and sovereign defaults abstract this paper extends the baseline framework used in recent quantitative studies of sovereign default by assuming that the government can borrow using long duration bonds this contrasts with previous studies which assume the government can borrow using bonds that mature after one quarter we show that when we assume that the government issues bonds with a duration similar to the average duration of sovereign bonds in emerging economies the model generates an interest rate that is substantially higher and more volatile than the one obtained assuming one quarter bonds this narrows the gap between the predictions of the model and the data which indicates that the introduction of long duration bonds may be a useful tool for future research about emerging economies our analysis is also relevant for the study of other credit markets

income inequality and sovereign default abstract in this paper we study how income inequality matters for government borrowing and default decisions we extend a standard endogenous sovereign debt default model to allow for heterogeneous agents and stochastic variability in the dispersion of income we calibrate the model to match a number of stylized facts for argentina we show that i rising income inequality within a country increases the probability of default significantly ii the effect of output shocks is larger than the effect of inequality shocks iii the joint effect of these two shocks can generate a high default probability consistent with the argentine data iv the model can match the high volatility of consumption by the poor relative to the rich and v more progressive income taxes lead to lower default risk

implicit contracts incentive compatibility and involuntary unemployment this paper considers the enforceability of employment contracts when employees performance cannot be verified in court so that piece rate contracts are not legally enforceable part i shows that there exists a variety of self enforcing implicit contracts modelled as perfect equilibria in a repeated game and characterizes all the wage and performance outcomes that can be implemented implementation requires a strictly positive surplus from employment the form of the contract depending on how this surplus is divided between firm and employee piece rate contracts and contracts with an informally agreed bonus can be made self enforcing but the use of severance pay and bonding does not extend the set of implementable allocations the resulting contracts resemble actual labor contracts more than do the contracts in standard principal agent models part ii analyses market equilibrium with these contracts also modelled as perfect equilibria in a repeated game and shows that many such equilibria exist unfilled vacancies and unemployed workers can co exist despite the existence of contracts that are potentially mutually beneficial for those jobs that are filled any division of the potential surplus is possible so that the market can have at the same time involuntary unemployment and vacancies that are unfilled despite filled jobs earning positive profits as a criterion for selecting equilibria a notion of renegotiation proofness is applied then either all workers are employed or all jobs filled but any division of the potential surplus is still possible the paper explores what further restrictions on beliefs give rise to a walrasian outcome in which all the potential surplus goes to the short side of the market and to an efficiency wage type outcome in which the potential surplus goes to the long side

accounting for the impairment of long lived assets evidence from the petroleum industry abstract we investigate write downs of assets of oil and gas firms due to the application of the sec full cost ceiling test during the period of the largest decline in oil and gas prices since this test was mandated the correlation between the write down amounts and contemporaneous returns is statistically significant but it is lower than the correlation with lagged returns this and other evidence suggests that although the market perceived that some of the decline in asset value occurred in the quarter in which the write down was recorded much of the share market price adjustment due to this decline occurred earlier

sovereign debt signals abstract this paper develops a theory of sovereign borrowing where the interaction between the asymmetry of information and the lack of commitment for repayment leads to a novel signaling motive for the issuance of sovereign debt if the government is more informed than foreign investors about a fundamental of the domestic economy then debt provides the government an option to credibly signal good news in the future by repaying thus the government has an incentive to issue debt even in the absence of the traditional consumption smoothing or tilting motives

self enforcing wage contracts we examine long term wage contracts between a risk neutral firm and a risk averse worker when both can costlessly renege and buy or sell labour at a random spot market wage a self enforcing contract is one in which neither party ever has an incentive to renege in the optimum self enforcing contract wages are sticky they are less variable than spot market wages and positively serially correlated they are updated by a simple rule around each spot wage is a time invariant interval and the contract wage changes each period by the smallest amount necessary to bring it into the current interval

optimal incentives for teams much of the existing theory of incentives describes a static relationship that lasts for just one transaction this static assumption is not only unrealistic but the resulting predictions appear to be at odds with many work organizations the current paper introduces possible long term interaction among agents and studies how the design of explicit incentives and work organizations can exploit and interact with the implicit incentives generated by the repeated interaction of the agents the optimal incentive scheme is shown to display observed features of the increasingly popular teams such as the use of low powered group incentives