stayers as workers and savers the classic selection effect posits that deferred wages attract stayers the results in this paper suggest an alternative explanation deferred wage contracts attract savers all else constant savers are better workers than nonsavers a firm naturally works harder to retain better workers and thus is led to pay them higher wages thereby encouraging savers to remain in the firm s employ this process creates a confluence of deferred wages high levels of compensation and low quit propensities in this explanation staying is merely the result of a selection process and not the underlying factor that drives selection

the usefulness of the wind up measure of pension liabilities a labor market perspective financial economists have long favored the use of a wind up measure of the firm s pension liabilities yet the pension liabilities of the firm also represent the pension wealth of its workers it is reasonable to presume that workers and shareholders have a common view of the pension contract if the wind up measure depicts the true pension liabilities of the firm then the wage concession granted by its workers must reflect the fact that the firm may choose to terminate the plan at any time data on the wageservice characteristics of the membership of a sample of final earnings plans in canada suggest contrary to the implications of the wind up measure that workers wages do not internalize accruing pension benefits on a year to year basis instead the data suggest that pension plans may be a vehicle through which a significant portion of the total compensation of individual employees is deferred until their later work years and that the wind up measure may well understate the pension liabilities of an on going firm the financial accounting standards board 4 or fasb recently proposed that net pension assets or liabilities appear on the corporate balance sheet in order to make operational the concept of the augmented balance sheet one must construct measures of both pension assets and pension liabilities the noncontroversial view at least among economists is that pension assets be valued at market the fasb endorses this view the measurement of pension liabilities on the other hand remains controversial financial economists such as sharpe 10 have traditionally advocated a market or wind up measure of the firm s pension liabilities the pensions due under the terms of the plan if it were to be immediately terminated are calculated and these pensions are then costed at current annuity rates the accrued benefit method without salary projection is the actuarial valuation method used in the calculation the wind up measure is the market value of the firm s pension liabilities since it identifies the precise amount that the firm would require to discharge its legal obligation if the plan were terminated 1 yet the fasb now rejects the use of this method of calculating the firm s

why federal workers don t quit quit rates in the federal government are abnormally low some economists and the federal government itself have taken this to mean that federal wages are too high this paper provides an alternative explanation it shows that the timing of compensation across a career as well as its level affect quit rates pensions in particular impose large penalties on workers who quit early and the portion of federal pay in the form of pensions is very high this feature of the federal pay structure may explain its abnormally low quit rate as a general proposition quit rates are poor indices for judging pay adequacy

dynamic replenishment from two sources with different yields costs and leadtimes abstract we study a single item periodic review inventory system with two sources of supply in house production and outsourcing the two sources differ in yields costs and leadtimes demands in consecutive periods are independent random variables and stockout is fully backlogged our problem is to characterize the optimal dynamic policy that simultaneously determines the in house production quantity and the outsourcing quantity for each period to minimize the total discounted cost we show that the optimal policy for in house production can be characterized by a threshold and the production quantity is decreasing in the starting inventory the optimal outsourcing policy however is more complex and a threshold type policy is only optimal under a more restrictive assumption about the yields comparative statics about the effects of yield uncertainty outsourcing on the optimal policy and cost performance are discussed

the illusory effects of saving incentives on saving the authors evaluate research on how tax based saving incentives iras and 401 k s affect saving previous research overstates the impact of the incentives on saving by failing to account for several issues households with saving incentives have stronger tastes for saving than others saving incentives have interacted with debt nonfinancial assets financial markets and pensions and saving incentives represent pretax balances whereas taxable accounts represent posttax balances accounting for these issues essentially eliminates the impact of saving incentives on saving the authors conclude that little if any of the contributions to existing saving incentives have raised saving

the labor force participation behavior of married women under conditions of constraints on borrowing this paper investigates the effect of a borrowing constraint on the labor force participation of married women the model developed here relaxes the assumption of perfect markets found in standard life cycle models we find evidence that married women s work in the market is positively related to the existence and extent of family borrowing restrictions we suggest that the failure to account for this constant in family borrowing may be the reason for the unexpected positive sign in most empirical studies of the effect of family assets on a wife s work

borrowing constraints and credit demand in a developing economy summary this paper investigates the determinants of credit demand in the presence of borrowing constraints in a developing economy we model the determinants of observed debt for chilean households while accounting for selection bias and the endogeneity of their income and specific household assets using a novel chilean dataset we estimate the relationship between household characteristics and consumer and mortgage debt we find substantial differences in the nature of these relationships across the types of debt for example we find that the income elasticity for consumer debt is greater than 1 whereas for mortgage debt it is not the results suggest the increased availability of credit combined with the aging of the chilean population is likely to drastically change the distribution and level of chilean debt these findings are particularly relevant for other developing economies currently experiencing rapid income and debt growth copyright 2015 john wiley sons ltd

married womens tastes and the decision to participate in the labour market results from a fixed effects model in the paper we report estimates from two logit models of women s labour force participation a model with out fixed effects estimated from cross sectional data indicates a significant postive relation between work experience and particiption we ask whether the relation is due to a causal influence extered by the former variable on the latter or to a common underlying variable taste for market attachement to answer this question we present results from a fixed effects model estimated from panel data in this model the estimated coefficients of experience are insignificant suggestion that a taste for market attachement underlies both experience and participation is the presence of preschool children

bridge jobs and partial retirement the job stopping process of older workers often includes some combination of postcareer bridge employment partial retirement and reverse retirement fewer than two fifths of household heads retire directly from career jobs over half partially retire at some point in their working lives and a quarter reenter the labor force after initially retiring in addition postcareer employment is frequently located outside the industry and occupation of the career job and there are important differences in postcareer labor force experiences by gender permanent income and career job pension status

pensions and wages an hedonic price theory approach this paper examines whether a trade off exists between the level of pension benefits and wages the 1983 survey of consumer finance is used to match detailed information on pension plans to worker characteristics for a random sample of the population the pension wage tradeoff is estimated using both a contractual model of the labor market and the spot market model used in previous studies the results indicate a large negative tradeoff in the contractual model but only a negligible tradeoff in the spot market model results from estimating the underlying structural equations for pensions are also presented copyright 1992 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

the implicit pension contract developments and new directions pension economics has emerged as a separate literature over the past decade some of the early pension work was devoted to financial issues including implications of pensions for savings rates and portfolio allocation most new developments however have stemmed from research surrounding labor markets this research has led to an implicit contract theory of pensions a theory that has pensions playing a more complicated role in worker firm relation than heretofore realized the theory explains much of economic behavior in labor markets and bridges a gap between labor and financial literatures this essay describes the genesis for these ideas and traces some of the most important research results in the area an equal amount of spece is devoted to a consideration of likely directions for future research

some direct evidence on the importance of borrowing constraints to the labor force participation of married women this paper examines the link between credit availability and the labor supply decisions of married women in particular it uses data from the survey of consumer finances to test the role of some direct measures of borrowing constraints in a standard labor force participation equation although imperfect capital markets may alter the options available to households in a life cycle context the results suggest that borrowing constraints are of little importance to the labor force participation decisions of married women

releasing constraints to growth or pushing on a string policies and performance of mexican micro firms abstract using firm level data from mexico this paper investigates the firm characteristics associated with participation in credit markets access to training tax payments and membership in business associations we find that firms which participate in these institutions exhibit significantly higher profits moreover firms that borrow from formal or informal sources and those that pay taxes are significantly more likely to stay in business but firms that received credit exhibit lower rates of income growth these results persist when firm characteristics that are arguably correlated with unobserved entrepreneurial ability are controlled for our findings suggest that the significant within country differences in firm productivity observed in developing economies are due in part to market and government failures that limit the ability of micro firms to reach their optimal sizes

excess sensitivity of consumption to current income liquidity constraints or myopia this paper asks whether the empirical rejection of the rational expectations permanent income hypothesis occurs because agents are myopic in the sense that the marginal propensity to consume out of transitory income is non zero or because some agents face liquidity constraints the finding that the estimate of the mpc out of transitory income is dramatically affected in both magnitude and statistical significance by the inclusion of a proxy for liquidity constraints suggests that liquidity constraints are an important part of the explanation of the observed excess sensitivity of consumption to current income la sensibilite excessive de la consommation au revenu courant contraintes sur la liquidite ou myopie ce memoire examine la question a savoir pourquoi l hypothese du revenu permanent avec anticipations rationnelles n est pas v6rifiee empiriquement est ce parce que les agents economiques sont myopes i e que leur propension marginale a consommer a partir de leur revenu transitoire n est pas nulle ou bien est ce que certains agents economiques font face a des contraintes sur leur liquidite le fait que l estimation de la propension marginale a consommer le revenue transitoire est affectee par l inclusion d une variable qui tente de capturer l importance des contraintes sur la liquidit6 tant dans l 6valuation de sa taille que dans sa signification statistique suggere que ces contraintes jouent un role important dans l explication de cette sensibilite excessive qu on observe de la consommation aux changements dans le niveau de revenu courant almost all the recent empirical tests of the rational expectations permanent income hypothesis re pih have rejected the hypothesis using a rich variety of data sets and estimation methods the empirical work indicates that the failure of the re pih is significant both statistically and quantitatively the null hypothesis in this empirical literature typically consists of the joint hypothesis that 1 agents expectations are formed rationally 2 desired consumption is determined by permanent income and 3 capital markets are perfect in the sense that agents can lend or borrow against 1 studies rejecting the re pih include blinder 1981 flavin 1981 hall and mishkin 1982 hayashi 1982 and sargent 1978 in his original paper hall 1978 did not reject the re pih decisively however flavin 1981 showed that with a minor alteration in the specification of the alternative hypothesis the re pih could be rejected using hall s test and data set bernanke 1981 studying panel data on automobile expenditures did not find evidence against the hypothesis for an extensive survey of the empirical literature on the rational expectations permanent income hypothesis see king 1983 canadian journal of economics revue canadienne d economique xviii no 1 february fevrier 1985 printed in canada imprime au canada 0008 4085 85 117 36 1 50 canadian economics association this content downloaded from 157 55 39 17 on wed 31 aug 2016 05 08 58 utc all use subject to http about jstor org terms

subprime consumer credit demand evidence from a lender s pricing experiment using a unique panel data set from a u k credit card company we analyze the interest rate sensitivity of subprime credit card borrowers in addition to all individual transactions and loan terms we have access to details of a randomized interest rate experiment conducted by the lender on existing inframarginal loans for the whole sample we estimate a statistically significant 3 4 reduction in monthly credit demand in response to a five percentage point increase in interest rates this aggregate response is small but it masks very interesting heterogeneity in the sample we find that only low risk borrowers who fully utilize their credit cards lower their credit demand significantly when faced with an increase in interest rates we also document that a five percentage point increase in interest rates generates significant additional revenue for the lender without inducing delinquency over a short horizon 2013 the author

does deposit insurance increase banking system stability an empirical investigation based on evidence of 61 countries in 1980 97 the authors find that explicit deposit insurance tends to be detrimental to bank stability the more so where bank interest rates are deregulated and the institutional environment is weak the adverse impact of deposit insurance on bank stability tends to be stronger the more extensive is the coverage offered to depositors and where the scheme is funded and run by the government rather than the private sector

who is credit constrained in the u s economy an important assumption of the life cycle model of consumption is the postulate of perfect capital markets this hypothesis has recently been challenged by substantial empirical evidence hall and mishkin 1982 using the panel study of income dynamics estimate that 20 percent of united states families are liquidity constrained mariger 1986 derives a life cycle model with endogenous liquidity constraints and using a cross section estimates this fraction to be 19 4 percent hubbard and judd 1986 simulate a model with a constraint on net worth which shows that with reasonable assumptions about preferences 19 0 percent of united states consumers are liquidity constrained the emerging consensus points therefore to a fraction of approximately 20 percent of the population behaving in a manner that is inconsistent with the pure life cycle model in addition hayashi 1985 and zeldes 1989 investigate the correlation among consumption wealth and income for various population groups and infer that liquidity constraints are more important for younger families with low levels of wealth and saving the main limitation of these studies is that in their data sets constrained consumers are not observable and have to be identified via indirect evidence thus there is as yet little firm evidence about the characteristics of the consumers who are likely to be credit constrained this paper adopts an approach that differs from previous tests for liquidity constraints because it makes use of data where constrained consumers are observable and explicitly links their existence to credit market imperfections and personal characteristics the data drawn from the 1983 survey of consumer finances scf and described in section ii provide information on individuals whose request for credit has been rejected by financial intermediaries in section iii a model is developed in which consumers and lenders behavior jointly determines the probability that a consumer is rationed in the credit market this probability is then

pension reform personal pensions and gender differences in pension coverage abstract the personal pension scheme introduced in chile in 1981 has acquired a paradigmatic role for pension reform in less developed and developed countries in contrast to the significant gender gap in private pension coverage observed in developed countries in chile women s participation in the personal pension scheme is marginally higher than men s using cross section data the paper analyzes the determinants of personal pension plan contribution in chile and their effects it concludes that women s strong pension propensities and pension plan design explain in large part the absence of a gender gap in private pension coverage in chile

subprime borrowers securitization and the transmission of business cycles a growing literature i e jaffee lynch richardson and van nieuwerburgh 2009 acharya and schnabl 2009 argues that securitization improves financial stability if the securitized assets are held by capital market participants rather than financial intermediaries i construct a quantitative macroeconomic model with a novel specification for mortgage backed securities mbs to evaluate this claim my findings suggest that the existence of the securitization market stabilizes the economy under the condition that financial intermediaries do not engage in the acquisition of securitized assets in the presence of large negative housing preference shocks the drop in output in the first year after the shock is halved if subprime mbs are purchased by non financial agents rather than held by banks less

a model and empirical estimates of worker pension coverage in the u s an important issue in labor market policy today is private pension coverage it is well known that pension benefits have grown rapidly in the post world war ii years for example pension and other benefit payments as a percentage of total employee compensation rose from 7 4 in 1953 to 13 0 by 1973 11 27 yet pension participation is far from universal the most recent estimate is that 48 of all wage and salary workers currently are covered partly in response to this the president s commission on pension policy has recommended in its final report federal legislation to establish a national minimum funded pension system which would be required of all employers 8 7 this paper attempts to explain the variation in pension coverage two opposing views of pensions having very different implications for pension policy can be identified the first is implicitly adopted by the president s commission in this view pensions are exogenous to the competitive forces of the labor market distributed on a random basis as a bonus pensions do not substitute for other forms of compensation and therefore everyone would prefer to be covered a very different theory is that pensions result from competitive forces implicit in the labor market is a market for pensions in which the supply is the outcome of firms attempting to minimize costs while demand results from workers maximizing utility by choosing the optimal package of wage and nonwage compensation an outcome of this implicit market is a trade off between pension benefits and other forms of compensation if pensions are purchased in this manner systematic differences in pension coverage should emerge some workers will prefer wages and

opportunistic behavior by firms in implicit pension contracts several studies have established that under the most common form of pension coverage benefits accrue disproportionately near the end of a worker s career such backloading establishes a penalty for early quitting but may also create an incentive for opportunistic firm behavior because benefits generally are a function of highest earnings when nominal earnings are expected to rise an employer can reduce pension liabilities by discharging workers prior to retirement this paper uses the national longitudinal survey of mature men to test whether such actions by employers are systematic we estimate that pension covered workers with mean losses are less likely to be discharged unexpected increases in pension losses due to increases in inflation however raise the risk of discharge we find no evidence that the minimum vesting standards of the employees retirement income security act reduces the likelihood of discharge for older workers who previously were not vested these results are consistent with an implicit pension contract under which employer compliance is enforced by reputation

a study of wages and reliability this article studies the role of reliability on the wage rate reliability is defined in the sense of showing up for scheduled work over an extended period just as reliability is an important determinant of product prices a worker s reliability ought to be an important determinant of his or her wage moreover while workers are not conveniently packaged by brand name firms form expectations about reliability across identifiable groups of workers and thus effectively attach brand names to workers based on their observable characteristics a worker s wage depends on his own track record and the reputation for reliability of his identifiable group using robust measures of reliability i find that observed reliability and expected reliability substantially affect the wage rate and that about half of the gender wage gap can be explained by differences in expected reliability between men and women in the workforce

the effect of liquidity constraints on consumption a cross sectional analysis this paper examines the effect of liquidity constraints on consumption expenditures using a single year cross section data set a reduced form equation for consumption is estimated on high saving households by the tobit procedure to account for the selectivity bias since high saving households are not likely to be liquidity constrained the estimated equation is an appropriate description of how desired consumption that would be forthcoming without liquidity constraints is related to the variables available in the cross section data when the reduced form equation is used to predict desired consumption the gap between desired consumption and measured consumption is most evident for young households

the role of pensions in the labor market a survey of the literature because employer sponsored group pension plans entail agreements between workers and their employers explicitly linking future payment and employment they offer an unusual window into long term employment relationships this review of recent research on pensions explores how pensions influence employee compensation retirement turnover and other matters central to the determination of labor s price and quantity over time the authors also outline some unanswered questions and difficult to reconcile findings because the pension promise involves an explicit and relatively well documented set of statements regarding future contingent payment and employment an examination of the design and operation of employersponsored group pension plans can yield important insights into the long term employment relationship specifically pension research illuminates some important labor market questions in two ways it offers insight into an important element of compensation in its own right and it furthers our understanding of labor markets in which long term

the gender gap in pensions and wages this study provides rationale for the underrepresentation of women in the pension sector and examines the consequences for the gender wage gap for a given set of observed characteristics a woman is 11 19 percent less likely than a man to have a pension of the unexplained portion of the gender wage gap 10 38 percent is due to unexplained differences in pension coverage finally consistent with a screening effect of pensions women are paid more equally in the pension sector copyright 1990 by mit press

enjoying the quiet life under deregulation evidence from adjusted lerner indices for u s banks abstract the quiet life hypothesis posits that firms with market power incur inefficiencies rather than reap monopolistic rents we propose a simple adjustment to lerner indices to account for the possibility of forgone rents to test this hypothesis for a large sample of u s commercial banks we find that adjusted lerner indices are significantly larger than conventional lerner indices and trending upward over time instrumental variable regressions reject the quiet life hypothesis for cost inefficiencies however lerner indices adjusted for profit inefficiencies reveal a quiet life among u s banks

fringe benefits and labor mobility interindustry factor mobility is a crucial determinant of the income distribution effects of exogenous changes in relative commodity prices this examination of interindustry variation in wages and profits using data from manufacturing industries from

homeownership in the 1980s and 1990s aggregate trends and racial gaps abstract housing policy under the clinton and bush administrations has sought to boost homeownership while also narrowing racial gaps in owner occupancy rates against that backdrop homeownership rose sharply in the 1990s but white minority gaps remain in excess of 25 percentage points we analyze these patterns using data from the 1983 to 2001 survey of consumer finances results indicate that household characteristics explain most of the increase in homeownership and roughly two thirds of the white minority homeownership gap credit barriers account for no more than 5 percentage points of the remaining gap this suggests that policy makers will need to look beyond innovations in mortgage finance if their goal is to further expand homeownership

pensions and household wealth accumulation abstract economists have long suggested that higher private pension benefits crowd out other sources of household wealth accumulation we exploit detailed information on pensions and lifetime earnings for older workers in the 1992 wave of the health and retirement study and employ an instrumental variable iv identification strategy to estimate crowd out the iv estimates suggest statistically significant crowd out each dollar of pension wealth is associated with a 53 67 cent decline in nonpension wealth with less precision we use an instrumental variable quantile regression estimator and find that most of the effect is concentrated in the upper quantiles of the wealth distribution

assessing competition with the panzar rosse model the role of scale costs and equilibrium the panzar rosse test has been widely applied to assess competitive conduct often in specifications controlling for firm scale or using a price equation we show that neither a price equation nor a scaled revenue function yields a valid measure for competitive conduct moreover even an unscaled revenue function generally requires additional information about costs and market equilibrium to infer the degree of competition our theoretical findings are confirmed by an empirical analysis of competition in banking using a sample containing more than 100 000 bank year observations on more than 17 000 banks in 63 countries during the years 1994 2004

workers trust funds and the logic of wage profiles this paper defines a concept a worker s trust fund which is useful in analyzing optimal age earnings profiles the trust fund represents what a worker loses if dismissed from a job for shirking in considering whether to work or shirk a worker weighs the potential loss due to forfeiture of the trust fund if caught shirking against the benefits from reduced effort this concept is used to show that the implicit bonding in upward sloping age earnings profiles is not a perfect substitute for an explicit up front performance bond or employment fee it is also shown that the second best optimal earnings profile in the absence of an up front employment fee pays total compensation in excess of market clearing in a variety of stylized cases

pension coverage and borrowing constraints using data from the 1983 survey of consumer finances and taking a measure of borrowing constraint status as an indication of a worker s discount rate we find evidence that borrowing constrained workers are less likely to be covered by a pension plan and that the borrowing constraint effect is significant only for defined benefit plans this paper examines the extent to which differences in workers rates of time preferences can explain pension coverage outcomes we argue that workers with a high rate of time preference will avoid jobs with pensions because pension saving cannot be costlessly borrowed against and they will be more reluctant to join a defined benefit than a defined contribution plan because defined benefit plans offer less flexibility in choosing a pension saving rate the existing empirical literature on pension coverage emphasizes the role of taxes incentives administrative costs and employee perceptions of default and nonportability risks 1 this study concentrates on how the ability to borrow against pension contributions affects worker pension demand

capacity expansion for random exponential demand growth with lead times the combination of demand uncertainty and a lead time for adding capacity creates the risk of capacity shortage during the lead time we formulate a model of capacity expansion for uncertain exponential demand growth and deterministic expansion lead times when there is an obligation to provide a specified level of service the service level defined in terms of the ratio of expected lead time shortage to installed capacity is guaranteed by timing each expansion to begin when demand reaches a fixed proportion of the capacity position under this timing rule the optimal facilities to install can be determined by solving an equivalent deterministic problem without lead times numerical results show the effects of the demand parameters and lead time length on the expansion timing the interaction of timing with expansion size is explored for the case when continuous facility sizes are available with economies of scale

to defer or not defer uk state pension and work decisions in a lifecycle model the uk state pension which depends only on age includes an option to defer take up which yields either a subsequent lump sum or higher weekly pension we analyse the joint decisions on pension deferral and intertemporal labour supply participation in a lifecycle setting we show that deferral is purely a financial decision but the impact of deferral on work decisions depends on preferences wage rates non labour income and initial wealth to exactly characterize this we use a quasilinear utility function and provide calibrated simulations we also discuss the choice between a lump sum or increased weekly pension

is mandatory retirement overrated evidence from the 1970s in this paper we argue that mandatory retirement is only one aspect of a much broader system that influences an individual s retirement decision we look at responses over time to variations in mandatory retirement rules faced by a sample of private sector workers aged 62 64 in 1973 this is done within a model that specifically includes the economic incentives present in social security and pension systems we find that the impact of a mandatory retirement rule on work is considerably smaller than a simple comparison of those with and without mandatory retirement would imply

the sensitivity of consumption to transitory income estimates from panel data on households we investigate the stochastic relation between income and consumption specifically consumption of food within a panel of about 2 000 households our major findings are 1 consumption responds much more strongly to permanent than to transitory movements of income 2 the response to transitory income is nonetheless clearly positive 3 a simple test independent of our model of consumption rejects a central implication of the pure life cycle permanent income hypothesis the observed covariation of income and consumption is compatible with pure life cycle permanent income behavior on the part of80 percent of families and simple proportionality of consumption and income among the remaining 20 percent as a general matter our findings support the view that families respond differently to different sources of income variations in particular temporary income tax policies have smaller effects on consumption than do other more permanent changes in income of the same magnitude this abstract was borrowed from another version of this item

financial opening deposit insurance and risk in a model of banking competition abstract we study the impact of competition on banks risk taking behavior under different assumptions about deposit insurance and the dissemination of information while financial opening increases banks riskiness a risk based deposit insurance or alternatively the public disclosure of financial information are likely to mitigate this effect moreover the limiting cases of uninsured but fully informed depositors and risk based full deposit insurance yield the same equilibrium risk level although the welfare consequences of increased competition depend on its impact on risk financial opening unambiguously improves welfare as we approach the limiting cases

fiscal policy with heterogeneous agents and incomplete markets i undertake a quantitative investigation into the short run effects of changes in the timing of proportional income taxes for model economies in which heterogeneous households face a borrowing constraint temporary tax changes are found to have large real effects in the benchmark model a temporary tax cut increases aggregate consumption on impact by around 29 cents for every dollar of tax revenue lost comparing the benchmark incomplete markets model to a complete markets economy income tax cuts provide a larger boost to consumption and a smaller investment stimulus when asset markets are incomplete copyright 2005 wiley blackwell

intertemporal substitution and constraints on labor supply evidence from panel data intertemporal substitution and constraints on labor supply evidence from panel data i introduction through much of the 1970s and 1980s macroeconomic stabilization analysis has been dominated by equilibrium models in which fluctuations in employment result from intertemporal substitution workers voluntarily vary their labor supply over time in response to movements in wages and interest rates a number of recent empirical tests of intertemporal substitution models for example altonji 1982 mankiw et al 1985 ham 1986 strongly reject the intertemporal substitution approach these results have led some economists to reject equilibrium macro models in favor of keynesian models in which workers face quantity constraints on labor supply in keynesian models employment fluctuations result from changes in the severity of constraints that is changes in involuntary unemployment rather than intertemporal substitution on the other hand many economists remain unconvinced by recent rejections of intertemporal substitution models because the results are consistent with many possible explanations for tractability empirical studies always impose restrictive assumptions such as separability of utility over time and between goods or such as the existence of a representative consumer data also suffer from numerous problems such as aggregation bias measurement error and the use of average rather than marginal wage rates consequently even the authors of the studies seem hesitant to draw firm conclusions they often simply conclude that workers behavior is explained either by quantity constraints or by a more complicated intertemporal substitution model than the one they have tested 1 this paper attempts to determine which of these explanations is correct are changes in employment a sophisticated form of intertemporal substitution or are they involuntary the crucial data come from questions in the panel study of income dynamics about whether workers experience unemployment or are unable to work as many hours as they want following ham 1982 1986 this information is used to classify workers as quantity constrained in their labor supply or unconstrained i then test a simple intertemporal substitution model for each group of workers if the tests suffer from overly restrictive utility functions or data problems then the model should be rejected for both samples on the other hand if some workers truly face quantity constraints then the model should perform better for the sample of unconstrained workers 2 the tests yield two main results first the model indeed performs worse for the constrained workers for this group the data reject the model s overidentifying restrictions and the parameter estimates contradict the model in contrast the results for the unconstrained workers are weakly consistent with the model as keynesian theories suggest quantity constraints alter workers behavior second the estimates of the intertemporal labor supply elasticity for prime age men are close to zero even for unconstrained workers even if workers are free to vary their hours they apparently choose to respond little to movements in wages the paper addresses two other issues first do constraints on borrowing influence labor supply in the intertemporal substitution model workers borrow and lend to smooth consumption while varying hours of work as this suggests the model performs best for workers who not only face no labor supply constraints but who also own substantial assets and thus are unlikely to face liquidity constraints finally the paper proposes a new approach to identifying intertemporal labor supply equations previous micro studies do not adequately address the problem that wages are correlated with unobservable characteristics that affect tastes for work i propose two identifying restrictions 1 changes in tastes are uncorrelated with levels of time in variant variables and 2 changes in tastes have no aggregate component

pension portability and labor market efficiency a survey of the literature this paper reviews the theoretical and empirical literature evaluating the labor market effects of policies to enhance pension portability one perspective is that reducing the cost of job change w

delayed payment contracts and a firm s propensity to hire older workers there are jobs for which firms employ older workers but tend not to hire new older workers this may be attributable in part to implicit contracts that discourage worker shirking and malfeasance by shifting compensation to the end of the contract such delayed payment contracts can introduce a form of fixed costs into the employment relationship much as with hiring and training costs these fixed costs lead firms to hire primarily young long term workers while firms employ older workers workers who are serving out the last years of their contract they tend not to hire them this paper presents empirical evidence that is consistent with this argument

employer size and labor turnover the role of pensions the well documented lower labor turnover in large firms than in smaller firms has been cited as evidence that large firms pay workers above their opportunity wage this study investigates whether t

the latent demand for bank debt characterizing discouraged borrowers concerns that small firms encounter credit constraints are well entrenched in the literature despite widespread empirical evidence that a relatively small proportion of small firms have their loan applications rejected however many firms may be discouraged from applying for fear of rejection these businesses are the focus of this paper based on responses to a large scale postal survey of uk small and medium sized enterprises smes we find that twice as many businesses were discouraged from applying for a bank loan than had their loan request denied more particularly we observe a number of distinguishing characteristics of discouraged borrowers relative to applicants these include strategy sector prior entrepreneurial experience and banking relationships the implications of our findings for policy and future research are briefly discussed

pensions and indenture premia the implicit pension contract has provided a theoretical basis for the observed relation between pensions less quitting and earlier retirement but it also has encountered difficulty explaining why wages seem too high in pension firms this anomaly has been taken by some to imply that efficiency wages not pension capital losses explain why quitting is abnormally low in defined benefit pensions in this paper i pursue an alternative explanation that the implicit contract model is oversimplified because it ignores supply conditions facing long tenure firms i show that once an allowance is made for compensation required by workers for entering long term labor contracts numerous anomalous empirical observations in the pension market are explicable

capacity expansion under stochastic demands we consider the problem of optimally meeting a stochastically growing demand for capacity over an infinite horizon under the assumption that demand for product follows either a nonlinear brownian motion or a non markovian birth and death process we show that this stochastic problem can be transformed into an equivalent deterministic problem consistent with earlier work by a manne the equivalent problem is formed by replacing the stochastic demand by its deterministic trend and discounting all costs by a new interest rate that is smaller than the original in approximate proportion to the uncertainty in the demand

dynamic capacity expansion for a service firm with capacity deterioration and supply uncertainty motivated by the challenges faced by the telecom industry during the past decade in this paper we study a dynamic capacity expansion problem for service firms there is a random demand for the firm s capacity in each period the demand in excess of the capacity is lost and revenue is generated for the fulfilled demand at the beginning of each period the firm might increase its capacity through purchasing equipment for immediate delivery which is constrained by a random supply limit or it might sign a future contract for equipment delivery in the following period we assume that the firm s capacity might partially become obsolete due to natural deterioration or technology innovation we aim at characterizing optimal capacity expansion strategies and comparing the profit functions as well as the optimal control policies of different options specifically we show that the optimal capacity expansion policy for the current period is determined by a base stock policy compared with the case where no future contracts are available the optimal control parameters of capacity expansion are always smaller we further show that when the obsolescence rate is deterministic the optimal policy for capacity expansion through future contracts is also a base stock type the results are extended to the cases with stochastically dependent capacity supply limits and stochastically dependent demand processes which establish the robustness of the optimal policy in various market conditions

bank competition and crises revisited new results abstract we study the relationship between bank competition and stability for 145 countries over the period 1997 2010 we use three measures of bank competition namely the boone indicator the lerner and the adjusted lerner indices and two econometric methods our results show that bank competition is detrimental to bank stability and it also shortens the survival time of banking systems

a coordinated production planning model with capacity expansion and inventory management motivated by a problem faced by a large manufacturer of a consumer product we explore the interaction between production planning and capacity acquisition decisions in environments with demand growth we study a firm producing multiple items in a multiperiod environment where demand for items is known but varies over time with a long term growth and possible short term fluctuations the production equipment is characterized by significant changeover time between the production of different items while demand growth is gradual capacity additions are discrete therefore periods immediately following a machine purchase are characterized by excess machine capacity we develop a mathematical programming model and an effective solution approach to determine the optimal capacity acquisition production and inventory decisions over time through a computational study we show the effectiveness of the solution approach in terms of solution quality and investigate the impact of product variety cost of capital and other important parameters on the capacity and inventory decisions the computational results bring out some key insights increasing product variety may not result in excessive inventory and even a substantial increase in set up times or holding costs may not increase the total cost over the horizon in a significant manner due to the ability to acquire additional capacity we also provide solutions and insights to the real problem that motivated this work

pensions bonding and lifetime jobs a well known if underappreciated finding in the mobility literature is that turnover is much lower in jobs covered by pensions than in other jobs this could result from capital losses for job changes created by most benefit formulas the tendency of turnover prone individuals to avoid jobs covered by pensions or higher overall compensation levels in such jobs a switching bivariate probit model of pension coverage and turnover is developed to estimate the effect of each of these factors the results show that capital losses are the main factor responsible for lower turnover in jobs covered by pensions but self selection and compensation levels also play an important role this is the first direct evidence that bonding is important for understanding long term employment relationships

dynamic replenishment production and pricing decisions in the face of supply disruption and random price sensitive demand abstract we study a joint decision problem for replenishment production pricing strategies in the face of both supply and demand uncertainties the supply of the raw material suffers from a potential supply disruption while the demand for the finished goods is price sensitive and random we assume that the raw material is storable and unfilled demands are fully backordered we characterize the optimal policies for raw material replenishment finished goods production and pricing we find that the optimal replenishment policy is an order up to type for a given finished goods stock level while it is a threshold type for a given raw material stock level for either a given finished goods stock level or a given raw material stock level the optimal production policy is a threshold type and the optimal pricing policy is a modified list price type respectively

the effects of pension funds on markets performance a review the worldwide reforming process of pension systems triggered by the demographic transition and globalization has led several countries to implement multi pillar pension systems and enhance pension funds for this reason the studies on the effects that pension funds exert on markets performance have been flourishing in the last decades in this paper we provide an updated review of the empirical advances in this field of study with particular focus on the effects that pension funds produce on labour markets financial markets and economic growth