involuntary unemployment and implicit contracts this paper provides an explanation of involuntary umemployment arising as a consequence of asymmetric information between firms and workers involuntary unemployment is defined as a situation where ex post gains to trade exist a model of labor contracts is developed where the allocations are not ex post optimal it is shown that inferiority of leisure is a necessary and sufficient condition for the existence of involuntary unemployment

underemployment with liquidity constrained multi period firms s grossman and o d hart amer econ rev 71 1981 301 307 have shown that underemployment can occur if firms are risk averse and have better information than workers c kahn and j scheinkman j econ theory 35 1985 343 365 replace the assumption of risk aversion with the more basic assumption of limited liability but they obtain risk averse behaviour only when the liquidity constraint is currently binding a t period model is developed here to show that firms will also display risk aversion if the liquidity constraint might become binding in the future

wage employment contracts this paper studies the efficient agreements about the dependence of workers earnings on employment when the employment level is controlled by firms the firms superior information about profitability conditions is responsible for this form of contract governance under plausible assumptions such agreements will cause employment to diverge from efficiency as a byproduct of their attempt to mitigate risk it is shown that if leisure is a normal good and firms are risk neutral employment is always above the efficient level such a one period implicit contracting model cannot therefore be used to explain unemployment as a rational byproduct of risk sharing between workers and a risk neutral firm under conditions of asymmetric information

learning by doing the technology gap and growth in contrast with other trade and growth theories in previous literature the author resents a growth theory of trade induced learning other things being equal two conditions are essential for trade induced learning first both exports and imports are equally important sources and are mutually reinforced in intensifying the learning process moreover the nature or characteristics of these traded goods also influence the effect of learning second trade openness is a prerequisite but not a sufficient condition for rapid growth with whom one trades one s trading partner is a key factor in determining trade induced technology spillover and hence in affecting enduring growth therefore this trade induced learning theory provides abundant and testable implications for the empirical study of trade and growth copyright 1998 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

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

optimal employment contracts with bankruptcy constraints abstract consider the optimal incentive compatible contract offered by a firm with private information to its risk averse employees if the firm is subject to a binding limited liability or bankruptcy constraint then the contract will yield underemployment in low productivity states relative to full information efficiency such contracts either yield underemployment in all states or excessively high variability in employment

trade policy and income inequality new evidence abstract this paper uses recently available data to investigate the link between income inequality and trade protection it finds that among less developed countries more open economies experienced increased income inequality during the late 1980s trade policy has had no effect on income inequality in developed countries

foreign investment and spillover efficiency in an underdeveloped economy evidence from the mexican manufacturing industry abstract in this paper we consider the question whether differences in technical efficiency of mexican plants in part derive from spillover efficiency associated with foreign direct investment we use labour productivity as a measure of technical efficiency and relate this to capital intensity labour quality and scale of production we measure the degree of competition by different concentration indices and the final factor determining efficiency is the presence of foreign subsidiaries if there is a positive relation between efficiency of domestic plants and the foreign participation of various industries we conclude that there is a spillover of technical efficiency the empirical evidence from the study indicates that this is the case

changes in income inequality and the black market premium is a high black market premium for us dollars associated with rising or falling income inequality within a nation this paper empirically examines this issue within a cross section of countries and finds that the black market premium is strongly associated with rising income inequality as measured by changes in the gini coefficient others have used the black market premium as a proxy to measure protectionist policies so a possible implication is that protectionist policies further skew the distribution of income within a country however other measures of protectionist policies are not associated with changes in income inequality instead other factors which might drive the black market premium such as interest rate differentials appear to be more relevant in explaining why the black market premium is positively related with increases in income inequality

liquidity constrained employment contracts abstract kahn and scheinkman 1985 have shown that optimal contracting between risk averse workers and risk neutral but liquidity constrained firms results in underemployment if firms have better information than workers this result is extended here by allowing the firm to divide its wealth between capital and liquid assets so that liquidity is a choice variable the firm generally chooses a portfolio under which it is optimal not to choose the risk neutral i e expected profit maximizing employment contract the underemployment result is thereby shown not to be strongly dependent on the choice of parameters

technical inefficiency in manufacturing industries this article examines technical inefficiency of manufacturing industry in the united kingdom based on data for 19 023 establishments in 151 industries these data drawn from the annual census of production for 1977 have been used to estimate technical inefficiency in each industry by fitting translog stochastic frontier production functions and decomposing the residuals into two components one measuring inefficiency and the other unobservable random factors the work is the first step in a larger project to explain the sources of technical inefficiency and to compare efficiency between countries similar studies are currently taking place in australia the united states canada japan south korea and norway the first phase of estimation has been completed for the united states caves 1988 for the united kingdom green and mayes 1989 and australia harris 1989

new ways of looking at old issues inequality and growth abstract the paper uses new cross country data on income and asset land distribution to show that i there is a strong negative relationship between initial inequality in the asset distribution and long term growth ii inequality reduces income growth for the poor but not for the rich and iii available longitudinal data provide little support for the kuznets hypothesis policies that increase aggregate investment and facilitate acquisition of assets by the poor might thus be doubly beneficial for growth and poverty reduction

estimation of technical inefficiency in manufacturing industry an extension of the method of estimation of technical ineficiency is presented based on the stochastic production frontier approach a derivation of the estimation procedure is given and the technique applied at the industry level the choice of production function is considered and empirical results pertaining to australia and the uk are presented

persistent wage dispersion and involuntary unemployment it is costly for firms offers to workers to be turned down both because firms must make additional offers and making offers is costly and because capital is underused or unused provided that workers apply to at least two firms for jobs there will be wage dispersion in equilibrium and some workers will randomly fail to receive any wage offers firms in the same industry with access to the same technology may nevertheless choose different levels of capital intensity firms using capital intensive technologies will pay higher wages

post reform industrial productivity performance of china new evidence from the 1985 industrial census data i introduction during the last decade china implemented a series of economic reforms that followed what many observers agreed was a period of stagnation in industrial productivity 1 the first wave of chinese economic reforms 1978 79 following the economic opening to the west under the four modernizations began after the third plenum of the eleventh central committee of the communist party of china announced a new policy of economic modernization in december 1978 a major goal of the new policy was to improve productivity toward this end the party would 1 allow the formation of private enterprises 2 permit state owned and collective enterprises to retain a portion of their profits 3 devolve a greater degree of decision making to factory managers and drastically reduce the scope of planning 4 introduce material incentives such as bonuses to labor and 5 place increased reliance on markets for inter industry resource allocation it is important to note that at this time in the early 1980s real reform was limited to the agricultural sector as discussed in perkins 1988 the second wave of reforms occurred in 1983 84 with the announcement of sweeping changes for the urban industrial sector these reforms included four major measures 1 a reduction in the number of leadership positions in enterprises 2 a further expansion of enterprise managers authority 3 the substitution of an income tax for remission of profits to the state and 4 removal of the ceiling on bonuses naturally it is important to know whether or not these reforms improved chinese industrial productivity since the early 1980s both chinese and western economists have conducted many empirical studies on china s post reform economic performance however the results from these studies are far from conclusive for example the world bank 1983 1985 field 1984 yeh 1984 chen 1986 chen and sang 1986 pan 1986 and tidrick 1986 have reported that input accumulation accounts for nearly all of output increases in industry as a whole in the early 1980s in particular tidrick 1986 found that china s performance has been extremely disappointing total factor productivity in the state owned industrial sector declined at an annual rate ranging from 0 10 percent to 1 20 percent for the period 1978 83 in contrast more recent studies such as those by kuan et al 1988 and jefferson 1988 have found that china s post reform industrial productivity was significantly improved most notably kuan et al 1988 found that chinese industrial productivity in the state owned sector grew at an average annual rate ranging from 2 7 to 3 1 percent for 1980 84 and from 15 3 to 18 2 percent for 1984 85 this difference in the findings reported in the literature is striking and requires further investigation one explanation is that the various studies are based on different data sets time periods models and data construction methods for example tidrick 1986 used aggregate time series data for state owned industry for the period 1952 83 while kuan et al 1988 used aggregate time series data including only independent accounting units within the state owned industrial sector for the period 1953 85 perkins 1988 reviewed china s overall post reform economic performance using data at the national level he found that during 1976 85 total factor productivity in china grew at an annual rate of 3 79 percent accounting for over 40 percent of china s net material product he concluded that reform and productivity growth thus led the way to higher overall growth and that agriculture and the collectively organized small scale industrial enterprises play an important role in the accelerated productivity growth of the reform periods perkins however hastened to point out that his conclusion is based on impressionistic evidence and is in no sense definitive and suggested that disaggregated data on outputs and inputs by sector or individual industries are required to identify those sectors that accounted for most of the rise in productivity perkins 1988 628

employment with asymmetric information in an economy without informational and other distortions entrepreneurs and workers can write labor contracts that support a pareto optimal allocation of resources this paper is an attempt to characterize contracts when enterpreneurs are better informed about the state of nature than are their workers asymmetric information generally results in a suboptimal allocation of both risk and worker effort in particular if consumption and leisure are perfect substitutes employment will be less than fully pareto optimal in all but the most favorable states of nature

multinational experience and the creation of linkages with local firms evidence from the electronics industry the paper focuses on the nature and determinants of multinational firms creation of linkages with local firms with specific reference to the electronics industry the study of the recent evolution of international operations in this sector seems to highlight a relevant and somewhat generalisable pattern of industrial organisation and dynamics it is argued that the nature and intensity of multinational companies involvement into linkages with local counterparts are strongly influenced by a combination of factors that are partially inter dependent but still rely on different decision making centres on the one hand host countries long term investment policies in the field of human capital training and accumulation and on the other hand firms decisions to take roots in local contexts through the creation of foreign subsidiaries it is further suggested that human capital and subsidiaries will particularly favour the development of collaborative linkages with local firms compared to previous work of the authors on this subject this paper utilises an expanded and updated data set covering international operations of the top european and us electronics companies over the 1984 1995 period and attempts a more detailed and in depth analysis concerning the nature determinants and evolution in time of international growth strategies

trade regimes and wages abstract we examine the impact of restrictive trade regimes on wages in the manufacturing sector a simple three sector economic model predicts that wages will fall in response to trade regime restrictiveness empirical tests are based on data for 37 countries over time our measure of trade regime restrictiveness is the black market premium on u s dollars the results strongly suggest that restrictive trade regimes reduce wages consistent with our theoretical analysis

fdi trade and spillover efficiency evidence from china s manufacturing sector using firm data from the 1995 third industrial census of china this paper finds that the presence of foreign ownership has a positive and significant effect on domestic firms productivity moreover trading with more advanced countries helps china gain access to new technology and information which improves its productivity and enables it to compete in international markets it is found that china s imports from oecd and the four asian tigers and exports to oecd have positive effects on domestic firms productivity by dividing industries into high technology gap and low technology gap groups it is found that the spillover effects of fdi are larger for the low technology gap group than for the high technology gap group however the estimation results of the trade induced technology spillover effect support the technology gap learning theory and the significance of importing appropriate technology

what is a liquidity crisis abstract this paper investigates the role of liquidity it is argued that the firm holds money as a guarantee of solvency to its contractual partners by holding liquid assets the firm is able to increase the efficiency of its contracts variations in the opportunity cost of holding money cause variations in the firm s demand for money and consequent variations in the frequency of contract failures this mechanism is suggested as an alternative explanation of the observed relationship between money income and interest rates

a technique for obtaining improved proxy estimates of minimum optimal scale in the field of industrial organization the concept of economies of scale is of fundamental importance large minimum optimum scale mos 1 and significant unit cost reduction up to mos size together suggest the possibility of high industry concentration and significant barriers to entry 2 however a recent paper in this review caves shirazi and porter 1975 has pointed to the severe difficulties encountered by students of industrial organization in empirical analyses of these relationships the chief problem is that objective measures of mos i e engineering estimates 3 and of the cost disadvantage of suboptimal scale production are available for only a small minority of all u s manufacturing industries at say the 4 digit level since there are more than 400 such industries it is most unlikely that there ever will be much change in this situation this means that in large scale cross section statistical analyses various proxies for scale economy influences must be used this is also the case in other fields of economics in which the influence of industrial organization has been recently felt in the investigation of sectoral patterns of direct foreign investment and the commodity composition of international trade for example unfortunately little has been achieved in terms of the development of reliable proxies for scale economies or minimum optimal scale this relative poverty in the data seriously jeopardizes the empirical analyses undertaken in all the above mentioned fields the present paper is a first step at overcoming this deficiency it offers a critical analysis of the proxies currently in vogue and it suggests an alternative technique for generating estimates of mos that appear to be substantially superior to them

the black market for dollars in brazil the model of the black market for dollars focuses on the interaction of portfolio decisions relevant to the holding of asset stocks and the determinants of net flows of dollars associated with tourism and smuggling a partial equilibrium model of the black market shows that the level of the premium is determined by the official real exchange rate and the official depreciation adjusted interest differential as well as seasonal factors associated with tourism expectations of future exchange rate changes under rational expectations are shown to affect the current level of the black market premium the empirical evidence provides ample support for the role of the key determinants of the premium as well as for an important seasonal pattern the magnitude of the seasonal variation is evidence of the imperfect substitutability between black dollars and cruzeiro assets in portfolios

firm size and technical efficiency applications of production frontiers to indian survey data abstract this paper is an empirical investigation of the relationship between relative technical efficiency and firm size in four indian manufacturing industries a frontier translog production function is used to derive measures of technical inefficiency at the enterprise level given the properties of the estimated production frontier these indices of technical efficiency are also indices of total factor productivity tfp which is the single most widely accepted measure of productive efficiency variations in technical efficiency are correlated with several explanatory variables including size of firm firm size is found to be positively associated with relative productive efficiency in only one of the four industries

devaluation exchange controls and black markets for foreign exchange in developing countries abstract this paper analyzes the response of external balance indicators to anticipated devaluation in a model incorporating the movement of black market exchange rates under rational expectations the analysis is then extended to the case of devaluation cycles to examine the behavior of black market rates and official trade statistics in the face of persistent inflation that appreciates the real exchange rate and motivates periodic devaluation the data confirm the predicted response of the black market rate to devaluation as well as the sensitivity of official exports data to movements in the black market rate

a note on overemployment underemployment in labor contracts under asymmetric information abstract models of labor contracts under asymmetric information may predict either overemployment or underemployment this paper shows that this result depends crucially on whether or not leisure is a normal good if firms are risk neutral

income distribution development and foreign trade a cross sectional analysis abstract this paper analyses cross sectional evidence on income inequality in developing countries within a consistent theoretical framework where the major explanatory variables are factor endowments their ownership structure and foreign trade distortions the resulting explanation of cross country differences in income distribution is considerably better than what is found in the existing literature endowments in mineral resources land concentration in agricultural exports trade protection and secondary schooling are shown to be major determinants of differences in income inequality across developing countries

the measurement and sources of technical inefficiency in the indonesian weaving industry production function models are estimated with a time series of cross section data on indonesian weaving establishments the sources of technical inefficiency are investigated three firm attributes are identified as being potentially related to firm efhciency tbey are firm ownership age and size the importance of these attributes as sources of inefficiency in the indonesian weaving industry is investigated and the implications of the find ings discussed