Wage Premia in Employment Clusters: Agglomeration Economies or Worker Heterogeneity?

The correlation between wage premia and concentrations of firm activity may arise due to agglomeration economies or workers sorting by unobserved productivity. A worker's residential location is used as a proxy for their unobservable productivity attributes in order to test whether estimated work location wage premia are robust to the inclusion of these controls. Further, in a locational equilibrium, identical workers must receive equivalent compensation so that after controlling for residential location (housing prices) and commutes workers must be paid the same wages and only wage premia arising from unobserved productivity differences should remain unexplained. The models in this paper are estimated using a sample of male workers residing in 33 large metropolitan areas drawn from the 5% Public Use Microdata Sample (PUMS) from the 2000 U.S. Decennial Census. We find that wages are higher when an individual works in a location that has more workers or a greater density of workers. These agglomeration effects are robust to the inclusion of residential location controls and disappear with the inclusion of commute time suggesting that the effects are not caused by unobserved differences in worker productivity. Extended model specifications suggest that wages increase with the education level of nearby workers and the concentration of workers in an individual's own industry or occupation.

Arthur M. Abell, Brustbild, mit Violine

Signatur des Originals: S 36/F02547

Construcción de competencias colectivas regionales. La experiencia de conformación de Clusters y Sistemas Productivos Locales en Argentina

Fil: Belloni, Paula. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Consolidación de cadenas globales de valor y desarrollo de clusters locales : El caso de la maquinaria agrícola en Argentina

Fil: Langard, Federico. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Consolidación de cadenas globales de valor y desarrollo de clusters locales : El caso de la maquinaria agrícola en Argentina

Fil: Langard, Federico. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Construcción de competencias colectivas regionales. La experiencia de conformación de Clusters y Sistemas Productivos Locales en Argentina

Fil: Belloni, Paula. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Consolidación de cadenas globales de valor y desarrollo de clusters locales : El caso de la maquinaria agrícola en Argentina

Fil: Langard, Federico. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Distribution of sponge spicule types, Goniothecium odontella and Diploneis cf. bomboides in selected spicule clusters from ODP Leg 112 holes (Table 1)

Clusters of sponge spicules found in Quaternary deep-water sediments at Sites 685 and 688 off Peru represent single individuals of small sponges or fragments of larger sponges. The spicule assemblages constituting these clusters probably represent a few demosponge species of the subclass Tetractinomorpha and order Astrophorida, because triaenes and microscleric euasters, as well as abundant monaxons, are present. As proved by incorporated Neogene diatoms, these spicule clusters are allochthonous. The sponge individuals probably inhabited deeper neritic environments during late Neogene time.