COMPETITIVE AND IMPERFECTLY COMPETITIVE LABOR MARKETS IN URBAN AREAS*

ABSTRACT. In this paper, I present a model incorporating two kinds of spatial labor markets: a centralized competitive market at the central business district (CBD) and dispersed local markets across economic space under imperfect competition. Wage differentials and the size of the two types of markets are endogenously determined by rational choices of workers as well as profit maximization of firms. Workers can exercise rational choices with respect to market places where they commute and supply their labor. In this model, I attempt, in effect, to integrate the Hotelling-type paradigm and the Samuelson-type paradigm in a consistent spatial setting.     

ON THE SHAPE OF MARKET AREAS IN LÖSCHIAN SPATIAL MODELS*

ABSTRACT. The paper analyzes the lattice shape of equilibrium configurations of firms in spatial models. Lösch's assertion that free entry will result in hexagonal market areas is proved for a variety of assumptions about the nature of the market equilibrium, and about the preferences of customers. All the models considered, however, incorporate rational entry behavior and identify the stable lattice as an entry deterring equilibrium. A simple proof is presented of the optimality of hexagonal market areas, at least among regular space-filling configurations.     

The Local Implications of Major Job Transformations in the City: A Spatial Microsimulation Approach

The changing dynamics of regional and local labor markets during the last decades have led to an increasing labor market segmentation and socioeconomic polarization and to a rise of income inequalities at the regional, urban, and intraurban level. These problems call for effective social and local labor market policies. However, there is also a growing need for methods and techniques capable of efficiently estimating the likely impact of social and economic change at the local level. For example, the common methodologies for estimating the impacts of large firm openings or closures operate at the regional level. The best of these models disaggregate the region to the city (Armstrong 1993; Batey and Madden 1983). This paper demonstrates how spatial microsimulation modeling techniques can be used for local labor market analysis and policy evaluation to assess these impacts (and their multiplier effects) at the local level‐to measure the effects on individuals and their neighborhood services. First, we review these traditional macroscale and mesoscale regional modeling approaches to urban and regional policy analysis and we illustrate their merits and limitations. Then, we examine the potential of spatial microsimulation modeling to create a new framework for the formulation, analysis and evaluation of social and local labor market policies at the individual or household level. Outputs from a local labor market microsimulation model for Leeds are presented. We show how first it is possible to investigate the interdependencies between individual's or households labor market attributes at the microscale and to model their accessibilities to job opportunities in different localities. From this base we show how detailed what‐if microspatial analysis can be performed to estimate the impact of major changes in the local labor market through job losses or gains, including local multiplier effects.     

DOES AGGLOMERATION MATTER EVERYWHERE?: NEW FIRM LOCATION DECISIONS IN RURAL AND URBAN MARKETS*

We test whether commonly used measures of agglomeration economies encourage new firm entry in both urban and rural markets. Using new firm location decisions in Iowa and North Carolina, we find that measured agglomeration economies increase the probability of new firm entry in both urban and rural areas. Firms are more likely to locate in markets with an existing cluster of firms in the same industry, with greater concentrations of upstream suppliers or downstream customers, and with a larger proportion of college‐educated workers in the local labor supply. Firms are less likely to enter markets with no incumbent firms in the sector or where production is concentrated in relatively few sectors. The same factors encourage both stand‐alone start‐ups and establishments built by multiplant firms. Commuting decisions exhibit the same pattern as new firm entry with workers commuting from low to high agglomeration markets. Because agglomeration economies are important for rural firm entry also, policies encouraging new firm entry should focus on relatively few job centers rather than encouraging new firm entry in every small town.     

ON THE IMPACT OF LABOR MARKET MATCHING ON REGIONAL DISPARITIES*

ABSTRACT We propose a model where imperfect matching between firms and workers on local labor markets leads to incentives for spatial agglomeration. We show that the occurrence of spatial agglomeration depends on initial size differences in terms of both number of workers and firms. Allowing for dynamics of workers' and firms' location choices, we show that the spatial outcome depends crucially on different dimensions of agents' mobility. The effect of a higher level of human capital on regional disparities depends on whether it makes workers more mobile or more specialized on the labor market.     

劳工地理研究新进展评述

在经济地理学的研究中,劳工常常被看作是与自然资源、资金、技术等同类的经济要素,只重视劳动成本,忽视了劳工作为社会活动主要参与者的角色。近年来,劳工地理研究取得了长足的进展,弥补了传统地理学研究的不足。全球化背景下的工人运动、劳工组织和地方劳工控制体制,劳工市场的空间分割,不同政治、经济和文化背景下的农区劳工地方化逐渐成为劳工地理的重要研究方向。     

URBAN UNEMPLOYMENT AND THE SPATIAL STRUCTURE OF LABOR MARKETS: AN EXAMINATION OF THE “TODARO PARADOX” IN A SPATIAL CONTEXT*

ABSTRACT The Todaro paradox and the effects of job creation in urban areas will be re-examined in our spatial model in which the radius of the labor market is endogenously determined by the rational choices of workers. The travel cost of workers plays a crucial role in the choice between two different types of response, migration or commuting. By considering travel costs, we find that the Todaro paradox can be applied to developed, as well as developing, countries. Job creation in urban areas can produce a paradoxical increase in urban unemployment in developed countries, because the low marginal cost of travel will significantly increase the radius of the urban labor market and create new labor supply without migration.     

TheConvergence of the Italian Regions and Unemployment: Theory and Evidence

We explore the links between the halt of the convergence process of Italian regions at the beginning of the 1970s and the increase in regional unemployment dispersion. We consider a neoclassical exogenous growth model with an imperfect labor market and show that during the transitional dynamics the imperfections of the labor market negatively influence the output growth rate. In particular, the model implies that centralized bargaining is likely to set a national minimum wage that is too high with respect to the labor productivity of the less developed regions, resulting in a negative impact on their per capita output growth. We test the implications of the model on a regional panel data set using the GMM framework. Both our market distortion measure and the unemployment rate are found to significantly lower the growth rate of per capita output.     

Regional Occupational Employment Projections: Modeling Supply Constraints in the Direct‐Requirements Approach*

Detailed industry‐occupation employment forecasts are an important class of regional labor market information produced by the U.S. Bureau of Labor Statistics. In theory, the forecasts should improve the national, interregional, and intertemporal matching efficiency of labor markets. But the efficiency argument is dependent on the quality of the forecasts. The methodology used to produce the projections is still fundamentally a demand‐requirements approach that implicitly assumes that labor supply is infinitely elastic for every occupation. This paper examines the validity of that assumption and evaluates a demographically based labor supply module as an adjunct to the current methodology.     

Agglomeration Diseconomies of Traffic Congestion and Agglomeration Economies of Interaction in the Information-Oriented City

This paper presents a partial equilibrium model of land, labor, and transportation markets in an information-oriented city with traffic congestion of commuting and agglomeration economies of interaction. We derive the equilibria by numerical computations using specific utility, production, and congestion functions. The laissez-faire equilibrium is compared with the optimum. In contrast with the results of many previous papers, at the optimum the CBD becomes compact and the city more suburbanized than the laissez-faire equilibrium. We also analyze the effects of a Pigouvian tax system and subsidies on the spatial structure in the city.     

A Spatial Price Determination Model for Multi‐Market Heterogeneously Distributed Resources: An Application to Forestry Markets in Sweden

The spatial dimension is a key paradigm in price determination, as attested by recent studies in the literature that highlighted the differential in market behavior between spatial and non‐spatial pricing settings. In this paper, we develop a model of spatial pricing for multi‐market heterogeneously distributed resources, with an application to the Swedish forestry sector. The focus of the model is to estimate the impact of spatial interaction on the demand for resources in terms of resource allocation, competition, and pricing. In its core, the pricing mechanism relies on a supply–demand framework. Using disaggregated data at the gridcell level for forest feedstock supply and harvesting costs in Sweden, we construct regional supply curves for each gridcell assuming a maximum transportation distance to delimit the potential market. Demand nodes are exogenously determined and are adjusted using a distance‐decay model to assess demand pressure across locations. We apply the model empirically to assess the impact on forest feedstock prices of a 20 TWh increase in biofuel production.     

A REGIONAL ECONOMY,LAND USE,AND TRANSPORTATION MODEL (RELU‐TRAN©): FORMULATION,ALGORITHM DESIGN,AND TESTING*

ABSTRACT RELU is a dynamic general equilibrium model of a metropolitan economy and its land use, derived by unifying in a theoretically valid way, models developed by one of the authors [ Anas (1982) , Anas–Arnott (1991, 1997) , Anas–Kim (1996) , Anas–Xu (1999) ]. RELU equilibrates floor space, land and labor markets, and the market for the products of industries, treating development (construction and demolition), spatial interindustry linkages, commuting, and discretionary travel. Mode choices and equilibrium congestion on the highway network are treated by unifying RELU with the TRAN algorithm of stochastic user equilibrium [ Anas–Kim (1990) ]. The RELU‐TRAN algorithm's performance for a stationary state is demonstrated for a prototype consisting of 4‐building, 4‐industry, 4‐labor‐type, 15‐land‐use‐zone, 68‐link‐highway‐network version of the Chicago MSA. The algorithm solves 656 equations in a special block‐recursive convergent procedure by iterations nested within loops and loops within cycles. Runs show excellent and smooth convergence from different starting points, so that the number of loops within successive cycles continually decreases. The tests also imply a numerically ascertained unique stationary equilibrium solution of the unified model for the calibrated parameters.     

ECONOMIC IMPACTS OF CULTURAL DIVERSITY IN THE NETHERLANDS: PRODUCTIVITY,UTILITY, AND SORTING*

ABSTRACT This paper identifies the impact of cultural diversity on local economies, by explaining spatial disparities in wages and housing prices across Dutch cities using unique individual panel data of homeowners during the period 1999 and 2008. We distinguish between the effects of spatial sorting based on individual heterogeneity, interactions‐based productivity effects, and consumer amenities while controlling for interactions between the labor and housing market. In line with previous literature, we find a positive effect of cultural diversity on average housing prices. After controlling for spatial sorting, the effect of cultural diversity on housing prices is negative. The negative impact of cultural diversity on local housing markets is likely driven by a causal effect between the presence of immigrants and neighborhood quality that outweighs a positive effect of immigrant‐induced diversity in consumption goods.     

社会主义改造完成后引入市场机制的先声——陈云与1956年农村自由市场的开放

中国的社会主义三大改造是与市场调节机制退出经济运行同步进行的。而市场调节机制从农村经济退出的表现之一就是自由市场的关闭。陈云最早发现了由此产生的严重弊端,并提出了在国家计划市场为主体的前提下,开放农村自由市场。这个设想的付诸实施,也确实活跃了城乡经济。但是自由市场在短缺的条件下,必然会对高积累和农副产品统购统销产生冲击,同时也为农民脱离集体经营和集体经济进而脱离国家计划控制提供了空间。因此,在1957年社会主义教育运动之后自由市场就又被关闭了。尽管如此,这次短暂的探索不仅为后来的改革积累了历史经验,而且使人们认识到如果没有生产环节的变革,仅有流通环节的改革是行不通的。     

Regional Labor Market Dynamics, Housing, and Migration

Abstract.  This study explores the impact of plant‐level labor market dynamics and housing markets on gross migration flows. The internal and the external reorganizations of regional labor markets are shown to be related. An increase in internal turnover of jobs and workers in regional labor markets is found to increase net‐migration. This effect arises mainly from a reduction in out‐migration. Housing markets constitute constraints for migration. In particular, an increase in regional housing prices and a large share of owner‐occupancy housing discourages net‐migration to a region by reducing in‐migration. In contrast, the out‐migration rate remains largely unaffected by housing markets.     

Business dynamism,educational attainment,and residential location choice

Using individual-level, geocode data from the National Longitudinal Survey of Youth's 1997 cohort, I ask whether business dynamism in local labor markets, defined as the rates of job creation and establishment entry, affects the location decisions of labor force participants, and I examine how effects differ for highly and less educated labor force participants. I find that a one standard deviation increase in business dynamism is associated with a 2%–4% increase in the probability a college graduate chooses a metropolitan statistical area and an 8%–15% decrease for high school graduates with no college experience. These results support recent findings documenting a decrease in responsiveness to local labor market conditions and suggest that incentivizing job creation in local labor markets may not be enough to offset the trend of declining internal migration in the United States.     

跨国公司地方嵌入新视角:基于地方劳工市场的研究进展与理论思考

20世纪90年代以来,跨国公司地方嵌入研究相对聚焦于资本密集型或技术密集型企业,而需要大量非熟练工人的劳动密集型跨国企业并未引起足够关注,建立在产业联系、技术外溢、社会网络等核心概念基础上的跨国公司地方嵌入分析框架很显然不能很好地解释劳动密集型跨国公司地方嵌入的理论与实践问题。在劳工地理学、新经济地理学等学科背景下,基于全球生产网络、关系嵌入、空间修复等核心概念,研究分别从劳工能动性的空间尺度、跨国公司地方嵌入的劳工要素、劳工管控对跨国公司的地方嵌入、区域劳工景观的空间修复等视角出发,系统梳理相关研究进展并提出未来主要研究议题,包括如何识别劳工供需因素对跨国公司地方嵌入的影响机制,如何剖析特殊劳工管控体制下劳工空间实践与能动性的关系,如何刻画跨国公司地方嵌入对区域劳工经济地理景观的影响,如何总结跨国公司地方嵌入与区域发展的战略耦合模式等。     

PRICE AND LOCATION CONJECTURES IN MEDIUM- AND LONG-RUN SPATIAL COMPETITION MODELS*

ABSTRACT. This paper examines medium-run and long-run equilibria in unbounded (circular) and bounded (linear) one-dimensional multifirm markets. A price-location adjustment model is outlined that dows simulation of the spatial equilibrium when these firms anticipate reactions from their nearest spatial rivals. Thus, the market equilibrium is derived from the interdependent but atomistic decisions of the competing firms and is not imposed by some outside observer or agency. Ail conjectures are exogenous; the three well-known price conjectures (Greenhut-Ohta, Hotelling-Smithies, and Losch) are highlighted; and the relevant comparative statics are provided.     

上海市就业市场状况与城市犯罪的空间计量分析

基于2008年上海市经济普查数据和城市犯罪数据,改变以往学者以失业率描述就业市场状况的做法,构建就业市场状况指数,并将其扩展到所有行业;同时,构建空间计量模型,研究上海市就业市场状况与刑事犯罪率之间关系,结果表明:1)就业市场状况对刑事犯罪率影响显著,不同行业的影响并不相同;其中,批发零售业、租赁和商业服务业、居民服务和其他服务业、公共管理和社会组织业就业的集中会引发犯罪活动的发生。2)空间计量模型在解释就业市场状况与刑事犯罪率之间关系时,计量效果良好。3)"空间效应"是影响刑事犯罪率的重要因素,其影响来自"空间邻近效应"和"空间误差效应"。     

Competition and Efficiency in a Spatial Setting

In this paper our primary concern is with a spatial model of competing firms in a regional industry. The firms are producing for an extraregional market and are located so as to gain exclusive access to a dispersed raw-material input. After outlining the form of the industry long-run average cost curve, we specify the equilibrium outcome, both for the individual firm and the regional industry. We demonstrate that the industry long-run supply curve does not coincide with the industry long-run average cost curve. We further show that the outcome in the spatial model results from the separation of firms, each firm having its own domain, part or all of which becomes its supply area.