globalisation and the brazilian steel industry 1988 97 over the course of the 1988 97 period the brazilian steel sector was subject to an unprecedented programme of trade liberalisation and privatisation while becoming far more open towards foreign investment and technology inflows using various indicators of competitive performance it is established that the impact of this drive towards globalisation was broadly favourable productivity and the technological level of production processes improved while import penetration remained minimal despite the scale of trade liberalisation however these improvements have to be set beside the fact that the competitive performance of the sector still lagged behind that of major international producers and technological weaknesses persisted the evolution of the sector s competitive behaviour can only be fully understood when pre existent internal factors as well as the externally imposed forces of globalisation are taken into account

market structure and product quality a study of the 2002 japanese airline merger abstract this study examines the economic consequences of a horizontal merger between japanese airlines that took place in 2002 with particular emphasis on quality responses to the airline merger a structural model allows firms to determine not only prices but also flight frequencies the obtained estimates would reject the hypothesis that the merger facilitated coordinated effects efficiency gains from the merger are estimated as not trivial and are more strongly observed in marginal costs per flight rather than in marginal costs per passenger welfare effects of the merger are positive but vary by market structure neglecting endogenous flight frequency overstates the welfare gains especially for smaller markets finally remedial measures imposed by the authority did little for the merger outcomes

mergers and business model assimilation evidence from low cost airline takeovers this paper examines mergers that lead to an almost immediate replacement of the target firm s business model in favour of that of the acquiring firm we examine the post merger behaviour of the two leading european dedicated low cost airlines easyjet and ryanair each acquiring another low cost airline respectively go fly and buzz we find that both takeovers had an immediate and sustained impact on both the pricing structures and the extent of inter temporal price discrimination used on the acquired routes with early booking fares noticeably reduced and only very late booking fares increased overall the analysis points to a pro competitive effect of both takeovers as a consequence of the introduction of the acquiring firms business models and associated yield management pricing systems

economies of traffic density in the deregulated airline industry this article estimates a structural model of competition among hub and spoke airlines in order to measure the strength of economies of traffic density on individual route segments we find that economies of density were strong during the sample period fourth quarter 1985 stronger than previous estimates by douglas caves laurits christensen and michael tretheway derived from traditional cost function methods we also find that the airlines competitive behavior was far from collusive in the markets under study markets requiring a connection at a hub airport our structural model also provides plausible estimates of demand elasticities we use our estimates to provide a cost based rationale for the major changes in the structure of the industry following deregulation for example the increase in airport and industry wide concentration and the increase in competition at the city pair market level and to simulate the effects of a merger of airlines that share a hub

wage norms capital accumulation and unemployment a post keynesian view the paper presents a post keynesian view of unemployment it argues first that the effective labour demand need not be downward sloping with respect to real wages and aggregate demand need not be downward sloping with respect to inflation second that there is a broad case for unemployment hysteresis understood as endogeneity of the non accelerating inflation rate of unemployment nairu based on social norms in wage bargaining and on the supply side effects of capital accumulation and third that much as keynes argued capital investment rather than labour market institutions is the key variable to explain changes in aggregate unemployment performance across countries and over time overall the paper advocates a keynesian view of the nairu where effective demand determines unemployment in the short run and the deviation of actual unemployment from the nairu determines the change in inflation in the medium term the nairu is endogenous and follows actual unemployment copyright 2011 oxford university press

entry exit and performance in airline markets abstract data from the airline industry indicate that 1 entry generally is not induced by price levels substantially above the norm 2 entry reduces fares and increases output and exit increases fares and reduces output and 3 incumbents cut price and maintain output in response to entry and survivors increase both price and output in response to exit these findings cast doubt on the ability of entry to prevent or reverse price increases from anticompetitive mergers

competition in airline networks the case of constant elasticity demands abstract this paper is concerned with the effect of competition in airline hub and spoke networks using constant elasticity demand functions we demonstrate that competition in a single market may generate positive or negative network externalities depending on price elasticities of demand

changing paradigms changing interpretations of the public sector in latin america s economies this paper attempts to show that over time most economists view of the role of the state in latin america s economies has changed considerably in the 1950s and 1960s state enterprises were considered to be an important instrument of economic development through import substitution industrialization the state and its enterprises were complementary rather than competitive with the private domestic and multinational sectors the decadence of state enterprises occurred mainly in the 1970s and 1980s when they were used as instruments of macroeconomic policies when many abused their monopoly positions and when there was increasing political interference in their operations with state enterprises having increasingly a crowding out effect and with most countries of the region needing fiscal adjustments privatization came into vogue the rest of the paper concentrates on some of the positive and some of the problematical aspects of latin america s privatization experience

ownership consolidation and product characteristics a study of the us daily newspaper market this paper develops a structural model of newspaper markets to analyze the effects of ownership consolidation taking into account not only firms price adjustments but also the adjustments in newspaper characteristics a new dataset on newspaper prices and characteristics is used to estimate the model the paper then simulates the effect of a merger in the minneapolis newspaper market and studies how welfare effects of mergers vary with market characteristics it finds that ignoring adjustments of product characteristics causes substantial differences in estimated effects of mergers jel g32 l13 l82 m37 do mergers affect product characteristics standard merger analyses typically study price effects only and ignore changes in product characteristics this paper endogenizes both it is likely that firms would adjust the features of their products after a merger ignoring this aspect of firm decisions in a merger analysis can lead to a bias in estimated welfare effects specifically i study how ownership consolidation affects product characteristics and welfare in the us daily newspaper market the newspaper market provides an ideal environment for analyzing the effect of mergers on product features for both econometric and economic reasons first of all individual newspapers often circulate in local markets there is substantial variation in demographics and ownership structure across these markets this variation is crucial for this study secondly the characteristics of newspapers are obviously important for welfare for example after an ownership consolidation do newspaper publishers improve or diminish the content quality do they enlarge or shrink the local news ratio do they increase or decrease content variety to address these questions i set up a structural model of the us daily newspaper

the economics of hubs the case of monopoly in this paper we study the optimization problem of an unregulated air carrier which is given the exclusive right to satisfy demand for air travel between any pair of cities it chooses a network of connections and a set of prices to maximize profits thus both network design and prices are endogenous we characterize the solution to this optimization problem when demands and costs are symmetric our main result is that if there are economies of density in the number of individuals travelling between two directly connected cities the optimal network is either a hub of size n 1 or one in which every pair of cities is connected directly

predicting merger outcomes the accuracy of stock market event studies market structure characteristics and agency decisions abstractmerger analysis is an exercise in prediction this paper analyzes the accuracy of two leading methods of predicting merger outcomes stock market event studies and an approach using market s

good jobs versus bad jobs this article develops a model of noncompetitive labor markets in which high wage good and low wage bad jobs coexist minimum wages and unemployment benefits shift the composition of employment toward high wage jobs because the composition of jobs in the laissez faire equilibrium is inefficiently biased toward low wage jobs these labor market regulations increase average labor productivity and may improve welfare

the effectiveness of economic policy and position in the cycle the case of tax reductions on overtime in france the economic situation of all the major developed countries has changed significantly during the 2007 10 period yet many economic policies have been kept in place this is true in particular of a key measure in french government policy tax reductions on overtime hours and their exemption from social charges in this article we propose simulations of this scheme based on the economic context in which it is implemented according to our simulations this kind of measure is pro cyclical and therefore poorly suited to the current situation of the french economy furthermore even in the case of good conditions the scheme would not be funded without financing this measure would widen the deficit and would amount to a fiscal stimulus financing it through an increase in levies would radically change its nature

the impact of mergers on fares structure evidence from european low cost airlines this paper examines mergers that lead to an almost immediate replacement of the target firm s business model in favor of that of the acquiring firm we examine the post merger behavior of the two leading european dedicated low cost airlines easyjet and ryanair each acquiring another low cost airline go fly and buzz respectively we find that both takeovers had an immediate and sustained impact on both the pricing structures and the extent of intertemporal price schedules used on the acquired routes with early booking fares noticeably reduced and only very late booking fares increased the analysis suggests that the takeovers had a net beneficial effect for consumers at least in price terms as a consequence of the introduction of the acquiring firms business models and associated yield management pricing systems

unemployment benefits and work incentives the us labour market in the great recession in the midst of sharply rising long term unemployment a series of unemployment benefit ub eligibility extensions raised the regular 26 week limit to as many as 99 weeks in some states in response leading economists have invoked the laws of economics to warn that the extensions may be responsible for much of the current unemployment crisis this prediction follows directly from a neoclassical vision in which jobs are taken only to generate the income necessary for desired levels of consumption and leisure workers can price themselves into a job by lowering wage demands and benefit eligibility rules are not effectively enforced so any income replacement must reduce work incentives and increase unemployment in contrast in a keynesian institutionalist vision there is job rationing in economic downturns worker identities are often closely linked to work there is recognition of long run scarring effects of extended unemployment and ub work rules are enforced so even generous income replacement is not likely to produce much voluntary unemployment especially in recessions this paper reviews the evidence on the effects of the ub extensions of 2008 9 the case for the orthodox prediction has relied heavily on extrapolating from pre great recession findings particularly through the use of selected spike at benefit exhaustion results from the early 1980s we conclude that the more recent spike evidence the recent shifts in the beveridge curve and the labour flows data unemployment to employment evidence offer little support for the orthodox disincentive view of the current unemployment crisis in the us if ub generosity has increased unemployment it has done so more by keeping workers attached to the labour market than by reducing the incentive to work copyright 2011 oxford university press

spatial multiproduct pricing empirical evidence on intra european duopoly airline markets this paper estimates a model of spatial multiproduct duopoly pricing when the location patterns differ across markets the theoretical model suggests that the neighbouring configuration yields less competitive nash prices than the interlaced configuration i apply this model to data for intra european duopoly airline markets the empirical results support the theoretical model since i find that fares are higher on intra european markets that exhibit neighbouring configurations in the time domain this result suggests that price competition is reduced when each airline operates on a specific segment of the timetable e g the first 12 hours of the day clearly this result has several implications for policy makers and or airport authorities in charge of awarding slots

the evolution of u s airline competition studies by academic economists were a significant force in the movement towards deregulation of the domestic airline industry in the early 1970s levine 1965 jordan 1970 keeler 1972 douglas and miller 1974 during the critical 1977 78 period in which deregulation was imposed first de facto by the civil aeronautics board cab and then de jure by congress the chairman and vice chairman of the cab were economists for the 14 years since deregulation economists have continued intensive study of the industry in part because of the unusual availability of reliable firm and transaction level data and in part because of the rare opportunity to observe an industry as it evolves from strict economic regulation to fairly unimpeded competition and strategic behavior the simplest prediction of economists about airline deregulation and one of the few on which nearly all economists agreed was that deregulation would improve consumer welfare in comparison to continued price and entry regulation fourteen years later nearly all economists still agree on this though the degree of enthusiasm for the deregulation outcome varies considerably there was substantial disagreement among economists about the market structure that would result because studies of scale economies in the airline industry had concluded that none existed beyond the scale of the smaller major airlines of the 1970s caves 1962 eads et al 1969 many economists argued that deregulation would result in more than the 11 major airlines that existed at the time of deregulation others predicted that only a few or possibly only one airline would survive at a large scale two noted university of chicago economists sam peltzman and lester telser made a bet in 1979 on whether

understanding unemployment flows this article reviews the current state of research on unemployment dynamics in macroeconomic models in particular it discusses the increasingly widespread use of the labour market flow approach as implemented via a search and matching process and presents main policy considerations that arise from this approach related to unemployment benefit systems and employment protection it reviews the implications of the labour flow approach for dynamic properties of macroeconomic models and discusses policy implications for macroeconomic and labour market policies finally it presents new evidence on the effectiveness of policies to influence unemployment in and outflows copyright 2011 oxford university press

aviation policy past and present for 25 years airline deregulation has been a symbol of the trend toward less expansive government the move from economic regulation to deregulation has delivered on its efficiency promises and there have been significant benefits to consumers in terms of lower prices and more convenient schedules however airline competition especially at hub airports remains imperfect the nature of these imperfections is explained better by models of oligopolistic behavior than by the contestability theory paradoxically for this industry the terrorist attack of september 11 2001 has ushered in an expanded role of government in aviation policy this expanded role does not reinstate government intervention in airline economic decisions rather it provides financial stabilization of the industry in the short run and long term structural change in aviation security

the price effect of eliminating potential competition evidence from an airline merger this paper analyzes the gain in pricing power that a firm achieves by merging with a potential competitor in its market using pricing data for the merger of usair and piedmont empirical analysis finds that prices rose by 5 0 to 6 0 per cent on routes that one carrier served and the other was a potential entrant this was more than half the increase on routes where the two carriers had been direct competitors other important factors included carrier size market concentration incumbent s identity and the potential entrant s presence at one or both endpoints

the role of worker flows in the dynamics and distribution of uk unemployment unemployment varies substantially over time and across sub groups of the labour market worker flows among labour market states act as key determinants of this variation we examine how the structure of unemployment across groups and its cyclical movements across time are shaped by changes in labour market flows using novel estimates of flow transition rates for the uk over the last 35 years we decompose unemployment variation into parts accounted for by changes in rates of job loss job finding and flows via non participation close to two thirds of the volatility of unemployment in the uk over this period can be traced to rises in rates of job loss that accompany recessions the share of this inflow contribution has been broadly the same in each of the past three recessions decreased job finding rates account for around one quarter of unemployment cyclicality and the remaining variation can be attributed to flows via non participation digging deeper into the structure of unemployment by gender age and education the flow approach is shown to provide a richer understanding of the unemployment experiences across population sub groups

compatibility and competition in airlines demand side network effects abstract network effects arising in air transport markets are usually viewed as resulting from the implications of joint production on the cost side in this paper we focus on network effects originating on the demand side we consider a network that links three cities involving two direct and one indirect connection two carriers with asymmetric traffic rights on this network compete sequentially at the first stage they choose their departure times at the second they set prices we show that in order to compensate its network disadvantage the weak carrier chooses its departure time as close as possible to its competitor s this is in contrast to the usual maximum differentiation principle the network effect intensifies price competition depending on the size of the market and on consumers valuation of waiting time various subgame perfect equilibrium configurations are exhibited

mergers coordinated effects and efficiency in the portuguese non life insurance industry we evaluate the impact on market power and efficiency of a series of mergers on three portuguese non life insurance markets we specify and estimate with a panel of firm level data a structural model which includes preferences technology and a market equilibrium condition firms demand curves are not very elastic firms technologies exhibit scale and scope economies and high cost efficiency scores we find that for the period following the mergers there is no evidence of i an increase in market power through coordinated behavior or ii changes in cost efficiency levels in addition social welfare increased

the credibility revolution in empirical economics how better research design is taking the con out of econometrics since edward leamer s memorable 1983 paper let s take the con out of econometrics empirical microeconomics has experienced a credibility revolution while leamer s suggested remedy sensitivity analysis has played a role in this we argue that the primary engine driving improvement has been a focus on the quality of empirical research designs the advantages of a good research design are perhaps most easily apparent in research using random assignment we begin with an overview of leamer s 1983 critique and his proposed remedies we then turn to the key factors we see contributing to improved empirical work including the availability of more and better data along with advances in theoretical econometric understanding but especially the fact that research design has moved front and center in much of empirical micro we offer a brief digression into macroeconomics and industrial organization where progress by our lights is less dramatic although there is work in both fields that we find encouraging finally we discuss the view that the design pendulum has swung too far critics of design driven studies argue that in pursuit of clean and credible research designs researchers seek good answers instead of good questions we briefly respond to this concern which worries us little

evaluating the performance of merger simulation evidence from the u s airline industry abstract this paper uses merger simulations to predict postmerger prices for five airline mergers from the 1980s and compares these predictions with observed postmerger prices i find that standard simulation methods which measure the effect of the change in ownership on unilateral pricing incentives do not generally provide an accurate forecast by incorporating postmerger information into the model i measure the relative importance of other factors that also contributed to the observed price changes the results indicate that the unexplained component of the price change is largely accounted for by supply side effects i conclude that deviations from the assumed model of firm conduct play an important role in accounting for the differences between the predicted and observed price changes this conclusion suggests that the predictive performance of merger simulation would benefit if more flexible models of firm conduct were incorporated into the methodology

unemployment vs mismatch of talents reconsidering unemployment benefits we develop an equilibrium search matching model with risk neutral agents and two sided ex ante heterogeneity unemployment insurance has the standard effect of reducing employment but also helps workers to get a suitable job we show through calibrations how the mere difference on unemployment insurance when countries experience a common skilled biased technological shock may result in differences in unemployment productivity growth and wage inequality these results are consistent with the contrasting performance of the labour market in europe and the united states in the last twenty five years the model is used to address some political economy issues

do substantial horizontal mergers generate significant price effects evidence from the banking industry this study examines the price effects of recent us bank mergers that substantially increased local market concentration using the deposit interest rates that banks offer their customers as our price measure we find that over the 1991 94 time period deposit rates offered by participants in substantial horizontal mergers and their local market rivals declined by a greater percentage than did deposit rates offered by banks not operating in markets in which such mergers took place we interpret our results as evidence that these mergers led to increased market power

equilibria in networks we study a model in which two carriers choose networks to connect cities and compete for customers we show that if carriers compete aggressively e g bertrand like behavior one carrier operating a single hub spoke network is an equilibrium outcome competing hub spoke networks are not an equilibrium outcome although duopoly equilibria in nonhub networks can exist if carriers do not compete aggressively an equilibrium with competing hub spoke networks exists as long as the number of cities is not too small we provide conditions under which all equilibria consist of hub spoke networks

the impact of industry consolidation on government procurement evidence from department of defense contracting abstract we study the relationship between market structure and public procurement outcomes in particular we ask whether and to what extent consolidation driven increases in industry concentration affect the way in which the government procures its goods and services we focus on the defense industry by far the largest contributor to federal procurement spending in the u s this industry experienced a sharp increase in the level of concentration during the 1990s driven by a series of large mergers between defense contractors using detailed microdata on department of defense dod contract awards we estimate the causal effect of industry concentration on a series of procurement outcomes leveraging the differential impact of these mergers across product markets we find that market concentration caused the procurement process to become less competitive with an increase in the share of spending awarded without competition or via single bid solicitations increased concentration also induced a shift from the use of fixed price contracts towards cost plus contracts however we find no evidence that consolidation led to a significant increase in acquisition costs we infer that the government s buyer power especially relevant in this context given the government is often the only purchaser constrained firms from exercising any additional market power gained by consolidation

dynamic oligopoly behaviour in the airline industry abstract this paper examines the dynamic interaction between united airlines and american airlines on a set of duopoly routes we estimate quarterly conduct parameters or conjectural variations and test constant behaviour bertrand cournot and collusive models we also test two regimeswitching models derived from the green porter price war model one based on reversion to bertrand behaviour during price wars the other on reversion to cournot behaviour the three constant behaviour models are all rejected the regime switching models can both describe the data but the cournot based version is preferred

hysteresis in unemployment unemployment has risen sharply in a number of countries and it appears to be becoming more persistent the experience of the 1970s and 1980s showed that adverse unemployment shocks could have long lasting effects with very serious economic and social consequences a key mechanism producing these adverse consequences was hysteresis in unemployment whereby temporary rises in unemployment generated by supply and or demand shocks had permanent or at least very persistent effects clearly it is important to understand how hysteresis mechanisms might operate in order to avoid such adverse outcomes on the other hand experience during the subsequent two decades showed that under more favourable macroeconomic conditions it is possible to observe good hysteresis effects now is a very appropriate time to re visit the issue of hysteresis in unemployment in order to avoid the errors of the 1970s and 1980s and if possible to get hysteresis effects working in a positive direction copyright 2011 oxford university press

hybrid cooperation agreements in networks the case of the airline industry abstract this paper develops a unified framework to analyze a continuum of hybrid cooperation agreements along two dimensions their degree of revenue sharing scope of alliances and their degree of cost sharing scope of joint ventures the analysis focuses on the air transportation industry distinguishing between interline and interhub markets as economies of traffic density become stronger we find that the socially optimal cooperation agreement moves from full alliance to joint venture in interline markets whereas it moves from joint ventureto merger in interhub markets these results are driven by the tradeoff between a procompetitive effect of alliances in interline markets and an anticompetitive effect in interhub markets along with the efficiency gains associated with joint ventures in interhub markets we also develop an empirical application for intercontinental routes for the period 2010 2016 that identifies a positive impact of deeper degrees of airline cooperation revenue and cost sharing on traffic both in interline and interhub markets therefore the potential anticompetitive effect of deeper alliances in interhub markets is not observed in our sample

hiring young unskilled workers on subsidized open ended contracts a good integration programme young labour market entrants account for a high level of unemployment and short term contracts in july 2002 the french government moved to reduce this insecurity at the start of working life by introducing the youth in business contract contrat jeune en entreprise a new contract for young people under 22 years old who dropped out of school before passing their final secondary school examinations under this scheme firms were entitled to claim a subsidy when they hired an eligible young worker on an open ended contract we assess the impact of the youth in business contract on transitions to permanent employment by estimating a dynamic difference in difference model drawing on the french labour force survey we use a new method inspired by keane and sauer 2009 to deal with measurement errors in the data we find that programme eligibility has no effect on transitions to permanent employment in a recession environment

how do we know that real wages are too high it is common belief that the wages that we observe are above the level that would prevail in a competitive labour market and also it is common to believe that wage moderation should be encouraged as a way to keep unemployment down this paper considers whether we can have confidence in these beliefs it presents a number of models designed to cast doubt on the conventional wisdom first we show that in an efficiency wage model in which there is involuntary unemployment a binding minimum wage may increase employment we then present a general equilibrium matching model in which there is involuntary unemployment but wages are below market clearing levels and raising wages can reduce unemployment we then consider the empirical evidence on employment and wage determination to argue that it is just as consistent with this model as with models in which wages are at or above market clearing levels

pricing and performance in monopoly airline markets since the airline deregulation act of 1978 ada much has been learned about the performance characteristics of airline markets functioning free of governmental control contrary to the initial expectations of many airline markets do not appear to conform well to the contestable markets model numerous empirical studies of the industry have concluded that performance depends on the level of actual competition a result incompatible with perfect contestability 2 in a perfectly contestable

airline mergers airport dominance and market power effects of northwestrepublic and twaozark mergers on fares at minneapolisst paul and st louis

hubs and high fares dominance and market power in the u s airline industry this article estimates the importance of route and airport dominance in determining the degree of market power exercised by an airline the results indicate that an airline s share of passengers on a route and at the endpoint airports significantly influences its ability to mark up price above cost the high markups of a dominant airline however do not create much of an umbrella effect from which carriers with smaller operations in the same markets can benefit the article suggests a number of possible explanations for this asymmetry

unemployment and the real wage the economic basis for contesting political ideologies using the keynesian theory of effective demand this paper demonstrates how particular models such as that of cooperative capitalism enunciated by the left keynesian social democrats the marxian model of profit squeeze emphasizing distributive conflict and even the conservative model relying on supply side stimulus fit in as particular variants of a more general theoretical scheme through a reconstruction of the familiar is schedule the argument is weaved around the theme of the relations between unemployment and real wage in the context of both a closed and an open economy to explain the common macroeconomic basis of contesting ideologies copyright 1990 by oxford university press

capacity and product market competition measuring market power in a puppy dog industry abstract in this paper we specify and estimate a structural model which accounts for competition in two variables capacity and prices the model has a two stage setup in the first stage firms make capacity decisions followed by a product differentiated price setting game in the second stage since costs are endogenized through the first stage this has important implications for the measurement of market power in the product market in particular simpler one stage specifications would result in a bias in the measurement of market power which can be linked to the taxonomy for two stage games given in fudenberg and tirole 1984 fudenberg d tirole j 1984 the fat cat effect the puppy dog ploy and the lean and hungry look american economic review paper and proceedings 74 361 366 we then estimate this model demand cost short and long run and conduct for the european airline industry using data for the period of 1976 1990 we perform a number of specification tests and reject a simple one stage specification in favor of our two stage set up in particular we find that some degree of market power in the product market exists however market conduct in the two stage set up is significantly less collusive than in the more widely employed one stage specification which is consistent with the direction of bias in puppy dog games this illustrates that collusiveness of firms market conduct in the product market is significantly overestimated whenever capacity competition is not accounted for

efficient unemployment insurance this paper constructs a tractable general equilibrium model of search with risk aversion an increase in risk aversion reduces wages unemployment and investment unemployment insurance has the opposite effect insured workers seek high wage jobs with high unemployment risk an economy with risk neutral workers achieves maximal output without any unemployment insurance but an economy with risk averse workers requires a positive level of unemployment insurance to maximize output therefore moderate unemployment insurance not only improves risk sharing but also increases output

endogenous costs and price cost margins an application to the european airline industry this paper allows for endogenous costs in the estimation of price cost margins in particular we estimate price cost margins when firms bargain over wages we extent the standard two equation set up demand and first order condition in the product market to include a third equation which is derived from bargaining over wages in this way price cost margins are determined by wages and vice versa we implement the model using data for eight european airlines from 1976 1994 and show that the treatment of endogenous costs has important implications for the measurement of price cost margins and the assessment of market power our main result is that observed prices in europe are virtually identical to monopoly prices even though observed margins are consistent with nash behavior apparently costs had been inflated to the point that the european consumers were faced with a de facto monopoly prices

efficiencies brewed pricing and consolidation in the u s beer industry merger efficiencies provide the primary justification for why mergers of competitors may benefit consumers surprisingly there is little evidence that efficiencies can offset incentives to raise prices following mergers we estimate the effects of increased concentration and efficiencies on pricing by using panel scanner data and geographic variation in how the merger of the brewers miller and coors was expected to increase concentration and reduce costs all else equal the average predicted increase in concentration led to price increases of 2 but at the mean this was offset by a nearly equal and opposite efficiency effect

a treatment effect method for merger analysis with an application to parking prices in paris we propose a method of building control groups for retrospective merger evaluation the procedure involves two parameters a distance or radius and an order of exposure reflecting the notion that a merger can affect an outlet in a more or less direct way we implement the method of estimating the price effect of a merger in the paris parking market and illustrate the consequences of including indirectly exposed outlets in the control group the methodology applies to any industry with spatial competition and allows one to check the sensitivity of the results to the choice of the control group

unemployment in the oecd this article examines the course of unemployment in oecd countries during the recent recession the severity of the recession and the strength of macro policy responses varied from country to country however even after correcting for these differences unemployment experiences were various unemployment generally rose by less in those countries which had strict employment protection legislation as it did in those countries with relatively high collective bargaining coverage various forms of work sharing also helped some countries to dampen the rise in unemployment so did increasing the generosity of out of work benefit arrangements the latter finding suggests that search theoretic approaches need to be modified institutions do matter and not just in the short run hysteresis effects could project their influence into the medium term