Zróżnicowanie wydajności pracy w Polsce na poziomie powiatów

The aim of the paper is to analyze the determinants of labor productivity of the Polish counties between 2002 and 2009. The analysis was based on the transformation of the Cobb-Douglas production function. Thanks to this the labor productivity was determined by the technical progress and capital per employer ratio. The parameters of the model were estimated with the use of the Ordinary Least Square (OLS) and Generalized Method of Moment (GMM) techniques. Additionally, the authors described the regional diversification of labor productivity and capital per employer ratio in the Polish counties.