labor unemployment risk and corporate financing decisions this paper examines the impact of labor unemployment risk on corporate financing decisions theory suggests that firms choose conservative financial policies partly as a means of mitigating worker exposure to unemployment risk using changes in state unemployment insurance benefit laws as a source of variation in the costs borne by workers during layoff spells we explore the connection between unemployment risk and the corporate financing decisions of public firms in the united states we find that increases in legally mandated unemployment benefits lead to increases in corporate leverage the impact of reduced unemployment risk on financial policy is especially strong for firms that have greater layoff separation rates labor intensity and financing constraints the estimated premium required to compensate workers for unemployment risk due to financial distress is about 57 basis points of firm value for a bbb rated firm these findings suggest that labor market frictions have a significant impact on corporate financing decisions

limited liability and incentive contracting with ex ante action choices abstract this article examines a principal agent model of financial contracting in which a risk neutral entrepreneur agent makes an unobservable ex ante effort choice while employing the investment funds of a risk neutral investor principal the key innovation is that the investment contract is subject to statutory liability limits given these liability limits two settings are considered one in which the investor payoff function is also constrained to be monotonically nondecreasing in firm profit and another in which no such monotonic contract constraint is imposed in the former case a standard debt contract is shown to emerge and a first best effort choice is not achieved in the latter setting the optimum is characterized by a live or die payoff function and a first best effort level may or may not be realized

weak separability and the estimation of elasticities in multistage demand systems the necessary conditions for multistage budgeting to be at least approximately justified are reviewed and the plausibility of these assumptions i e weak separability and low variability of price indices with utility level are discussed using no further assumptions simple relationships between expenditure and price elasticities in different budgeting levels are derived these results are applied to a three stage model for swedish food consumption and it is shown that the assumptions are not inappropriate restricting the analysis to the last stage of a multistage budgeting process is also shown to lead to considerable errors which could well have policy consequences

screening market signalling and capital structure theory this paper develops an equilibrium model in which informational asymmetries about the qualities of products offered for sale are resolved through a mechanism which combines the signalling and costly screening approaches the model is developed in the context of a capital market setting in which bondholders produce costly information about a firm s a priori imperfectly known earnings distribution and use this information in specifying a bond valuation schedule to the firm given this schedule the firm s optimal choices of debt equity ratio and debt maturity structure subsequently signal to prospective shareholders the relevant parameters of the firm s earnings distribution our objectives in this paper are threefold first we discuss an alternative equilibrium mechanism for resolving the informational asymmetry problem in a lemons type market in which some agents are a priori better informed than others this mechanism recently proposed by thakor 19 is distinct from and yet integrates the salient features of the screening see stiglitz 17 and viscusi 21 and signalling bhattacharya 41 paradigms second we demonstrate that the equilibrium notion developed is relevant to the determination of an interior optimal capital structure for a firm in a world of imperfect information this application of our model involves firms with intertemporally distributed cashflows which vary cross sectionally and are not necessarily independent and identically distributed i i d through time we use this multiperiod setting to address our third objective which is to explain a firm s debt maturity decision essentially our argument is that when both the size and timing of a firm s future earnings are indistinguishable ex ante from other firms in the economy the firm s capital structure and debt maturity choices could simultaneously function as signals of these a priori unknown parameters of its earnings the market structure we consider is similar to that in thakor 19 there are sellers each of whom offers a variety of products with qualities dependent upon a common set of exogenous attributes unique to the seller and buyers who are unaware of these attributes buyers interested in one of the products offered

sme growth the relationship with business advice and external collaboration the paper presents multivariate analysis of the relationship of sme growth with the acquisition of external business advice whilst controlling for the influence of sme characteristics of age manufacturing services high technology innovator level of skill of the workforce exporter and number of competitors the relationship of external business advice with sme performance is statistically significant for only a small number of sources and fields obtaining external advice in fields such as business strategy and staff recruitment is associated with positive firm performance the main positive relationships of advice and performance are dominated by private sector sources such as lawyers suppliers customers and business friends relatives collaborative arrangements with suppliers nationally internationally have a strong positive relationship with employment and turnover growth collaboration with local suppliers has a strong positive relationship with growth in profitability there is little evidence of statistically significant relationships between government backed providers of business advice such as business link and firm performance

the resolution of financial distress most models of financial structure embody an assumption about financial distress that causes debt to be costly to the issuing firm this approach has been criticized on the grounds that the assumed costs could be avoided by a costless financial reorganization in this article we show that despite the possibility of costless reorganization it may be rational for firms to incur significant costs in the resolution of financial distress the main assumptions that give rise to our results are the existence of asymmetric courts to impose a reorganization on the claimants of a firm article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

organic label bargaining power and profit sharing in the french fluid milk market the paper determines how the value added created by an organic label is shared in a vertical chain among manufacturers and retailers using purchase data on the french fluid milk sector we develop a structural econometric model of demand and supply that takes into account the bargaining power between manufacturers and retailers our results suggest that the organic label segment is more profitable as it permits the existence of higher margins moreover an organic label allows manufacturers to achieve more bargaining power relative to retailers and hence to obtain a higher share of total margins the econometric model is then used to assess the impact of an environmental policy in favor of the organic segment based on a mechanism of price support our results suggest that while a subsidy policy towards organic products benefits both manufacturers and retailers a tax policy toward conventional products benefits manufacturers of national brands at the expense of retailers and manufacturers that provide the private labels the benefits of such policies on the environment is relatively small all such policies tend to increase the impact on global warming and land use but reduce the impact on eutrophication acidification and energy use

units of measurement and the stone index in demand system estimation the stone index typically used in estimating linear almost ideal demand systems is not invariant to changes in units of measurement which may seriously affect the approximation properties of the model a modification to the stone index or use of a regular price index instead are both desirable practices in estimating linear ai models

human capital bankruptcy and capital structure we derive a firm s optimal capital structure and managerial compensation contract when employees are averse to bearing their own human capital risk while equity holders can diversify this risk away in the presence of corporate taxes our model delivers optimal debt levels consistent with those observed in practice it also makes a number of predictions for the cross sectional distribution of firm leverage consistent with existing empirical evidence it implies persistent idiosyncratic dierences in leverage across firms an important new empirical prediction of the model is that ceteris paribus firms with more leverage should pay higher wages

maintaining and testing separability in demand systems we derive a general elasticity representation of the necessary and sufficient conditions for direct weak separability of the utility function parametric restrictions required to implement the separability conditions are presented for three common demand systems the almost ideal translog and rotterdam our empirical application uses the rotterdam model to test a few separable structures within a complete u s demand system emphasizing food commodities results based on size corrected likelihood ratio tests provide support for commonly used separability assumptions about food and meat demand

the relationship between firm growth size and age estimates for 100 manufacturing industries this study uses a sample of all firms operating in 100 manufacturing industries to examine some aspects of firm dynamics it finds that firm growth the variability of firm growth and the probability that a firm will fail decrease with firm age it also finds that firm growth decreases at a diminishing rate with firm size even after controlling for the exit of slow growing firms from the sample gibrat s law therefore fails although the severity of the failure decreases with firm size copyright 1987 by blackwell publishing ltd

age size growth and survival uk companies in the 1980s this paper examines growth and survival amongst quoted and unquoted u k companies in the period 1975 85 and compares the results with earlier u k and u s studies an examination of death rates shows that smaller companies had higher death rates but the largest and smallest companies were least vulnerable to takeover careful attention is therefore paid to problems of sample selection bias it is shown that smaller companies grew faster than larger companies that gibrat s law does not hold amongst smaller firms that age is negatively related to growth and that these results are not an artifact of sample selection bias copyright 1994 by blackwell publishing ltd

the effect of capital structure on a firm s liquidation decision abstract a firm s liquidation can impose costs on its customers workers and suppliers an agency relationship between these individuals and the firm exists in that the liquidation decision controlled by the firm as the agent affects other individuals the customers workers and suppliers as principals the analysis in this paper suggests that capital structure can control the incentive conflict problem of this relationship by serving as a pre positioning or bonding mechanism appropriate selection of capital structure assures that incentives are aligned so that the firm implements the ex ante value maximizing liquidation policy

bankruptcy and agency costs their significance to the theory of optimal capital structure we support and generalize our original results 1978 in light of potential impediments to a pure market solution to agency problems and potential causal links between liquidation and bankruptcy in the case of bankruptcy costs market impediments are easily elimi nated through the inclusion of simple provisions in corporate charters and bond inden tures further we demonstrate that recent attempts to link liquidation costs to capital structure are without merit if the firm is to be liquidated on the basis of a rule other than one that maximizes the total value of all the claimants arbitrage profits arise and informal reorganization will discipline management to follow the liquidation rule that is optimal for existing securityholders also we find that the pure market solution is not readily generalizable to other classes of agency problems particularly the risk incentive problem how ever the alternative solution of the risk incentive problem through complex financing contracting may be useful in explaining complexities in contemporary financial contracts in a previous paper 1978 we employed arbitrage arguments to show that in a well functioning market bankruptcy costs are an insignificant determinant of a firm s capital structure we also pointed out that the decision to liquidate and its associated costs can be separated from the event of bankruptcy moreover any costs actually associated with the event of bankruptcy must be limited to the costs associated with an informal reorganization of the capital structure in the capital market prior to default these results were argued to hold under a com plex environment with multiple periods multiple securities and heterogeneous expectations we concluded that bankruptcy costs would be a significant deter minant of capital structure only in the face of irrationality on the part of market participants or unavoidable impediments to the arbitrage process since the publication of our paper there has been an accumulation of the

the cross sectional dynamics of the us business cycle 1950 1999 abstract modern interest in business cycles has focussed on the co movements and correlations in the major macroeconomic aggregates in this paper we offer another dimension to business cycle analysis which looks at the time series of cross sectional distributions of the growth rates of sales by us quoted companies from 1950 to 1999 we detect correlations between aggregate business cycle fluctuations and the higher moments of the cross sectional distribution we find a significant negative correlation between the rate of growth of gdp and the cross sectional variance and skewness of growth rates of sales on the other hand there is positive correlation at business cycle frequencies with kurtosis in order to explore this further we turn to the dynamic evolution of firms and analyse the sensitivity of growth rates to aggregate shocks conditioning on firm size the results suggest that despite considerable heterogeneity macroeconomic shocks have pervasive effects that are however more pronounced for firms in the middle range of growth this has implications for both macro and industrial economics

on the existence of an optimal capital structure theory and evidence one of the most contentious issues in the theory of finance during the past quarter century has been the theory of capital structure the geneses of this controversy were the seminal contributions by modigliani and miller 18 19 the general academic view by the mid 1970s although not a consensus was that the optimal capital structure involves balancing the tax advantage of debt against the present value of bankruptcy costs no sooner did this general view become prevalent in the profession than miller 16 presented a new challenge by showing that under certain conditions the tax advantage of debt financing at the firm level is exactly offset by the tax disadvantage of debt at the personal level since then there has developed a burgeoning theoretical literature attempting to reconcile miller s model with the balancing theory of optimal capital structure e g deangelo and masulis 5 kim 12 and modigliani 17 the general result of this work is that if there are significant leverage related costs such as bankruptcy costs agency costs of debt and loss of non debt tax shields and if the income from equity is untaxed then the marginal bondholder s tax rate will be less than the corporate rate and there will be a positive net tax advantage to corporate debt financing the firm s optimal capital structure will involve the trade off between the tax advantage of debt and various leverage related costs the upshot of these extensions of miller s model is the recognition that the existence of an optimal capital structure is essentially an empirical issue as to whether or not the various leverage related costs are economically significant enough to influence the costs of corporate borrowing the miller model and its theoretical extensions have inspired several timeseries studies which provide evidence on the existence of leverage related costs trczinka 28 reports that from examining differences in average yields between taxable corporate bonds and tax exempt municipal bonds one cannot reject the miller hypothesis that the marginal bondholder s tax rate is not different from the corporate tax rate however trczinka is careful to point out that this finding does not necessarily imply that there is no tax advantage of corporate debt if the personal tax rate on equity is positive indeed buser and hess 1 using a longer time series of data and more sophisticated econometric techniques estimate that the average effective personal tax rate on equity is statistically positive and is not of a trivial magnitude more importantly they document evidence that is consistent with the existence of significant leverage related costs in the economy

what characterizes a fast growing firm this paper seeks to empirically identify factors that influence the probability of being a fast growing firm in eastern and western germany descriptive analyses have shown that most firms experience only small positive or negative employment growth or stagnate over time the job generation mechanism rests with a handful of firms that increase their employment significantly over time the empirical analysis shows that the probability of being a fast growing firm depends on different factors when separating eastern and western germany as well as using different definitions of fast growing firms moreover the analysis shows that technology intensive manufacturing branches and knowledge based business related services do not generate the majority of fast growing firms

modeling physical quantities of food and nutrients consumed from aggregate data with an application to finland anticipating the impact of changes in economic incentives on dietary quality and nutritional health requires knowledge of how physical quantities of food consumed respond to price and income variations a problem arises however because physical quantities are 1 not consistent aggregates in demand models and 2 not measured at final retail level in national statistics the article develops a solution by establishing explicitly the theoretical link between composite demand and physical quantities from which a novel empirical approach to the estimation of nutrient elasticities is derived it is applied to finnish aggregate data from the national accounts and food balance sheets over the 1975 2006 period and the results are used to assess the potential effectiveness of several incentive based nutritional policy instruments jel classifications i10 q11 q18

incentives in academics why is there tenure this paper models ancademic department as an internal labor market the major problem facing the university administration is to ensure that members of its departments are willing to hire the best possible candidates academic tenure is seen to be a necessary condition for this the analysis is also consistent with other aspects of the academic environment including tenure track appointments contract buy outs early retirement plans and when a budget crunch hits the elimination of entire departments the results extend in a simple way to other organizations in which members have an input into overall decisions

financial and legal constraints to growth does firm size matter using a unique firm level survey database covering 54 countries we investigate the effect of financial legal and corruption problems on firms growth rates whether these factors constrain growth depends on firm size it is consistently the smallest firms that are most constrained financial and institutional development weakens the constraining effects of financial legal and corruption obstacles and it is again the small firms that benefit the most there is only a weak relation between firms perception of the quality of the courts in their country and firm growth we also provide evidence that the corruption of bank officials constrains firm growth

new firm survival industry strategy and location abstract how important is the physical location of a new firm for its chances of survival location of a new firm whether in urban metro or rural vicinities can have important impacts on performance outcomes urban locations often contain a wealth of diverse resources but may also have a greater number of competitors rural locations may lack diversity but can enable the firm to exploit a niche with limited competition we suggest that a simple examination of new firm location will not adequately predict survival chances rather the impact on location of the new firm will be influenced by the industry in which the new firm operates and by the strategy the new firm pursues the industry of the new firm is examined by focusing on where the new firm is located in the value chain we predict that a new firm upstream in the industry value chain will have better chances of survival than new firms downstream in the industry value chain new firms with broadly focused strategies are hypothesized to have greater survival chances than new firms strategically positioned to exploit a narrow market focus and we predict that new firms in urban locations will have greater chances for survival than new firms in rural locations

an assessment of the measurement of performance in international business research a sizeable body of international business ib research is devoted to building knowledge about the determinants of organizational performance a key precursor to accurately diagnosing why some organizations succeed in the international marketplace while others struggle is operationalizing performance appropriately yet to date no systematic investigation has considered how well ib research measures performance we examine the measurement of performance in 96 articles published in the academy of management journal administrative science quarterly journal of marketing journal of marketing research journal of international business studies management science organization science a nd thestrategic management journal between 1995 and 2005 the findings reveal that most studies do not measure performance in a manner that captures the multifaceted nature of the construct we describe the implications of these results and offer suggestions for improving future practice journal of international business studies 2008 39 1064 1080

unconditional elasticities in two stage demand systems an approximate solution two stage budgeting postulates that the consumer s utility maximization decision can be decomposed into two steps in the first stage total expenditure is allocated over broad groups of goods in the second stage group expenditures are allocated over elementary commodities in this article we assume that the current weighted true cost of living price indices defined for each broad group of elementary commodities vary only very slightly with sub utility levels hence it is possible to approximate the first stage of a two stage budgeting structure by a maximization problem involving a single price index and a single quantity index for each of the broad groups relationships between conditional and unconditional expenditure and price elasticities are derived within this context

litigation liability and incentives for care abstract in this paper potential injurers are subject to a negligence standard and differ in cost of taking care in the event of accident the injurer s degree of care is private information in litigation that follows award of damages for pain and suffering will lead to a general increase in care and hence reduce the likehood of accident a tighter negligence standard will lead some potential injurers to take more care and others to take less adoption of a rule under which the loser at trial must pay the litigation costs of the winner will reduce the pressure for punitive damages

welfare losses due to market power hicksian versus marshallian measurement this paper warns against the use of marshallian welfare loss in applied analysis of market power we show how to compute the hicksian deadweight loss from an ordinary demand then from an experiment using real data on twenty one sectors of the french food industry we find that the marshallian deadweight loss poorly approximates the exact hicksian measure hence it is advisable to use the latter in applied welfare analysis copyright 2001 oxford university press

demand for dairy products in the eu abstract in the eu dairy sector given the remaining high protective tariffs and the quota system the main factor that drives dairy product market prices is the demand this paper evaluates the development of demand in the eu and presents estimates of consumption trends and forecasts for the future as well as estimates of elasticity with respect to prices and income in two major eu consumer countries france and italy we use two methods to estimate the development of demand for dairy products one based on a multi stage demand system and another based on a single trend equation the two methods generally lead to the same qualitative results but trend projections are larger using the demand system approach which is based on a shorter data period this difference is thus partly explained by the fact that high trend projections are not sustainable over a long period the results show a decreasing consumption of butter and fluid milk and an overall growth in protein and fat consumption nevertheless the increase in fat consumption should be more moderate than the consumption of protein the results also show that the demand for dairy products is relatively price inelastic but is more sensitive to changes in income especially for butter and cheese categories as shown by the use of a partial equilibrium model of dairy markets the likely impact of the cap reform strongly depends on the development of demand for dairy products in the eu more research effort on demand analysis is therefore crucial in order to assess the impact of reforms or trade negotiations more accurately and effectively

the semiflexible almost ideal demand system abstract the concept of a semiflexible functional form is applied to the almost ideal ai demand system this yields a demand model that is more parsimonious than standard ones while preserving a degree of flexibility that satisfies the curvature property of concavity of the underlying expenditure function at least locally and that preserves the desirable properties of the ai model aggregation across consumers and nonlinearity of the engel curves the model is illustrated with an application to a relatively large demand system emphasizing food consumption

a theory of the optimal cost barrier to corporate takeovers this paper characterizes financial and employment contracts in the presence of both worker moral hazard and the threat of opportunistic takeovers firms in which worker efforts or specific investments are of greater importance are shown to exhibit a greater degree of deferred compensation supported by governance structures that allow managers to resist hostile takeovers more vigorously this effect is most pronounced in firms where workers pay for their job by accepting low wages early in their careers firms in which large deferred payments cannot be offset by low starting wages will offer less resistance to a hostile bidder copyright 1997 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

human capital capital structure and employee pay an empirical analysis abstract we test the predictions of titman 1984 and berk stanton and zechner 2010 by examining the effect of leverage on labor costs leverage has a significantly positive impact on cash equity based and total compensation of chief executive officers ceos compensation of new ceos hired from outside the firm is positively related to prior year firm leverage in addition leverage has a positive and significant impact on average employee pay the incremental total labor expenses associated with an increase in leverage are large enough to offset the incremental tax benefits of debt the empirical evidence supports the theoretical prediction that labor costs limit the use of debt

optimal capital structure and project financing abstract we examine the financing and incorporation modes for new projects there are two objectives the first is to provide a theory of optimal capital structure that links risk leverage and value and is particularly applicable to large firms counter to conventional wisdom we show riskier firms acquire more debt pay higher interest rates and have higher values in equilibrium second we provide an economic rationale for project financing which entails organizing a new project legally distinct from the firm s other assets we explain why project financing involves higher leverage than conventional financing and why highly risky assets are project financed

reorganization in bankruptcy and the issue of strategic risk abstract the decision by creditors to force the firm into bankruptcy where bankruptcy includes reorganization is shown to involve the valuation of a lottery over cooperative games rather than a lottery over specific monetary outcomes in the absence of assumptions about strategic negotiating risk the value of creditor claims is seen to be ambiguous this paper extends van horne s model of the optimal initiation of bankruptcy proceedings to include the reorganization option and strategic risk a modified decision rule is obtained to determine the optimal solution

firm specific human capital amd optimal capital structure the authors consider the moral hazard in managers undersupplying imperfectly marketable firm specific human capital firms may cope by granting long term wage contracts that protect managers against employment termination although ex ante efficient these contracts may be ex post inefficient when managerial ability is discovered to be low precommitted firms must honor these contracts unless there is ownership transfer that permits their legal invalidation bankruptcy is one such transfer mechanism since managers anticipate the contractual consequence of bankruptcy leverage worsens moral hazard this cost provides a counterbalance to the debt tax shield and leads to an optimal capital structure copyright 1994 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

elasticities in aids models in the literature a variety of approaches have been used to calculate demand elasticities in almost ideal demand system aids models of demand it is common to estimate the linear approximate almost ideal demand system la aids instead of the aids when the la aids is estimated all of the previously reported approaches to compute elasticities are theoretically incorrect this paper presents correct formulas for la aids elasticities and illustrates the potential errors from using incorrect computing the almost ideal demand system aids of deaton and muellbauer 1980a b has become popular in recent years anderson and blundell blanciforti and green 1983a b blanciforti green and king chalfant eales and unnevehr fujii khaled and mak fulponi heien and willett murray parsons ray a variety of approaches to computing elasticities has been used and some of the approaches may lead to significant errors this paper clarifies the differences between alternative approaches to estimating demand elasticities in aids models

the effect of state foreclosure laws on loan losses evidence from the mortgage insurance industry this paper analyzes the effect of three major provisions of state foreclosure laws procedure redemption period and provision for deficiency judgment on loan losses as reflected in the claims paid by private mortgage insurers and the fha it also explores the significance of the incentive conflict between the lender and the insurer in terms of the presence or absence of a coinsurance relationship and the existence of a deficiency judgment the results demonstrate that foreclosure laws have a significant effect on loan losses and that the existence of a deficiency judgment affects the incentive conflict between lender and insurer copyright 1990 by ohio state university press

foreign firms and chinese employment this paper examines the effect of foreign direct investment fdi on employment in the chinese manufacturing sector as one of the world s largest recipients of fdi china has arguably benefited from foreign multinational enterprises in various respects however one of the main challenges for china and other developing countries is job creation and the effect of fdi on employment is uncertain the effect depends on the amount of jobs created within foreign firms as well as the effect of fdi on employment in domestic firms we analyse fdi and employment in china using a large sample of manufacturing firms for the period 1998 2004 our results show that fdi has positive effects on employment growth the relatively high employment growth in foreign firms is associated with their firm characteristics and their high survival rate employment growth is also relatively high in private domestic chinese firms there also seems to be a positive indirect effect of fdi on employment in private domestically owned firms presumably caused by spillovers

networks and local environmental characteristics in the survival of new firms this study seeks firstly to clarify which networks at start up situation and early in life influence the survival of new firms secondly the study examines regional differences in the success of new firms the subjects were firms which had closed down during their fourth to sixth year of operations and they were compared with firms continuing in business the results indicate firstly that it is networks internal to firm that create competitive advantage innovation and efficiency secondly management based on working in groups was emphasized in the firms that continued in business in a typical family enterprise ownership management and family are united in a single entity in other types of firms networks are seen as participating in the strategic management of the firm thirdly close downs were often caused by uncontrolled risks a firm which fails after a successful start up often tends to grow rapidly in the beginning leaning on its product idea but this rate of growth is too high from the viewpoint of the financing and the management of the firm in firms which closed the growth objectives were too ambitions compared with the resources of the entrepreneur

employment and smes during crises the persistent increasing duration of unemployment has become an issue during economic crises although lay offs at large firms normally make headlines during crises we still know little about the potential impact of firm size on adjustment behavior in a crisis we studied effects of firm size on employment growth during economic slowdowns using a rich microeconomic database for the 1988 2007 period in portuguese manufacturing industry the results show that economic downturns affect firm growth negatively this negative effect is found to be higher for larger firms both during and immediately following crisis periods small and medium sized enterprises smes emerge as potential stabilizers in downturn periods however larger firms seem to be able to quickly recover from downturn periods our results contribute to the scarce literature and to the understanding of the portuguese case where many smes secure most jobs these first results may be useful because smes play a determinant role in other european union economies

quadratic engel curves and consumer demand this paper presents a model of consumer demand that is consistent with the observed expenditure patterns of individual consumers in a long time series of expenditure surveys and is also able to provide a detailed welfare analysis of shifts in relative prices a nonparametric analysis of consumer expenditure patterns suggests that engel curves require quadratic terms in the logarithm of expenditure while popular models of demand such as the translog or the almost ideal demand systems do allow flexible price responses within a theoretically coherent structure they have expenditure share engel curves that are linear in the logarithm of total expenditure we derive the complete class of integrable quadratic logarithmic expenditure share systems a specification from this class is estimated on a large pooled data set of u k households models that fail to account for engel curvature are found ro generate important distortions in the patterns of welfare losses associated with a tax increase

small and medium enterprises in korea achievements constraints and policy issues this paper provides an overview of the evolution of the small and medium enterprise sector in korea during the past quarter century it shows how the industrial structure of korea has changed dramatically over this period reflecting much greater shares in employment and value added by smes it reviews the evidence on sme dynamism showing that smes have contributed to the enormous transformations that have taken place in the korean economy since 1975 especially with regard to exports foreign investment and productivity performance it discusses the role of subcontracting as well as that of government and non governmental institutions in supporting sme development finally it examines the link between variations in the economic importance of smes as measured by their shares in employment and aspects of growth and inequality to assess whether smes function as business cycle shock absorbers and inequality reducing mechanisms