Working Papers

The WNE Working Papers series has been published by the Faculty of Economic Sciences at the University of Warsaw since 2008.

The WNE Working Papers series provides a fast, open channel for disseminating research conducted at the Faculty of Economic Sciences, University of Warsaw. The papers hosted here are working versions (pre-prints) and may evolve as authors refine their analyses, incorporate feedback, or progress through formal peer-review. What you read is the current version released by the authors, timestamped and assigned DOI/ISSN identifiers to ensure precise citation and version tracking. Copyright remains with the authors, who may, at any time, upload a revised file or add a note directing readers to a later, peer-reviewed publication.

The Working Papers series accepts articles by research employees of the Faculty and publications from conferences organised at the Faculty of Economic Sciences at the University of Warsaw. Articles should be original research papers which have not been previously published, on the subject of economics.

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Number of Results 4

WP(19/2016)210. Public-private wage differential in a post-transition economy: A copula approach to the switching regression model

Authors: Grotkowska Gabriela, Wincenciak Leszek, Gajderowicz Tomasz
In this study, we estimate the public sector wage premium in a post-transition economy, a quarter of a century since the collapse of the old regime. Our methodology uses a copula method to estimate the switching regression model, which allows for the…

WP210. Public-private wage differential in a post-transition economy: A copula approach to the switching regression model

In this study, we estimate the public sector wage premium in a post-transition economy, a quarter of a century since the collapse of the old regime. Our methodology uses a copula method to estimate the switching regression model, which allows for the relaxation of the restrictive assumption of joint normality. We control for employment selection into both sectors using an instrument based on information regarding learned professions. We use data from the Polish Survey of Earnings by Occupations (2012). Contrary to earlier results for Poland, we found positive selection into employment in both sectors, with positive ATET and negative ATEU. The results suggest that both private and public sector employees select themselves into the sector in which they earn more than they would in a counterfactual scenario.


Grotkowska Gabriela, Wincenciak Leszek, Gajderowicz Tomasz
public sector private sector wage differentials switching regression

WP(16/2016)207. Return to vocational education. Evidence from Poland

Authors: Strawiński Paweł, Broniatowska Paulina, Majchrowska Aleksandra
Vocational education in upper-secondary school has been perceived for many years as being inferior to general education, in spite of the fact that vocational education graduates enjoy a faster transition from school to work and are more likely to hav…

WP207. Return to vocational education. Evidence from Poland

Vocational education in upper-secondary school has been perceived for many years as being inferior to general education, in spite of the fact that vocational education graduates enjoy a faster transition from school to work and are more likely to have a permanent first job. As a consequence of the reform of the educational system that took place in Poland in 1999, the enrolment ratio in vocational schools has fallen dramatically. The empirical evidence in the literature on the returns to vocational education is limited. This study fills that gap and looks into wage premium for workers with vocational education in Poland before and after the reform of the educational system. The relative returns to different types and levels of education were estimated using a standard Mincerian wage equation
framework. The empirical analysis concentrated on a comparison of the relative benefits of vocational and nonvocational education. The results showed that vocational education graduates have, on average, a higher probability of finding a permanent job, and secondary-vocational education graduates receive higher earnings than secondary general education graduates in Poland. However, wages of vocational education graduates are lower than those of secondary general education. In spite of this, the decreasing number of vocational education graduates post-reform has contributed to reducing this gap.


Strawiński Paweł, Broniatowska Paulina, Majchrowska Aleksandra
Educational economics wages wage differentials returns to education vocational education general education tertiary education Poland

WP(13/2016)204. Evolution of the public-sector wage premium in Poland

Authors: Grotkowska Gabriela, Wincenciak Leszek, Gajderowicz Tomasz
The aim of this paper is to estimate the adjusted sectoral wage gap in Poland in the period 1999–2012. We use a set of individual data from the survey on the structure of earnings by occupations (SEO) carried out by Central Statistical Office i…

WP204. Evolution of the public-sector wage premium in Poland

The aim of this paper is to estimate the adjusted sectoral wage gap in Poland in the period 1999–2012. We use a set of individual data from the survey on the structure of earnings by occupations (SEO) carried out by Central Statistical Office in Poland (CSO) every two years for entities with more than nine employees. We apply quantile regression and the Ñopo decomposition method to address several methodological problems of wage differential analysis. We show that, after controlling for structural differences in employment, there is no clear trend in the evolution of the adjusted public-sector wage premium in Poland in recent years. The parametric approach indicates a positive and growing premium, with significant variations across different parts of wage distribution. The non-parametric approach yields different results, indicating a negative premium with no clear trend in the period 1999–2012, with a declining public-sector wage penalty in recent years.


Grotkowska Gabriela, Wincenciak Leszek, Gajderowicz Tomasz
wage differentials public sector wages quantile regression Ñopo decomposition Poland

WP(4/2011)44. Demand linkages and spatial agglomeration of Indian states

Authors: Cieślik Andrzej, Prusty Sadananda
In this paper, we examine the spatial relationship between wages and consumer purchasing power across Indian states to see whether regional demand linkages contribute to spatial agglomeration. We estimate a variety of the market-potential functions d…

WP44. Demand linkages and spatial agglomeration of Indian states

In this paper, we examine the spatial relationship between wages and consumer purchasing power across Indian states to see whether regional demand linkages contribute to spatial agglomeration. We estimate a variety of the market-potential functions derived from the Harris model as well as more recent models of the New Economic Geography. Besides market-potential, we consider housing stock, density of roadways, density of telecom, and dummies to capture cyclical fluctuations as parameters of consumer purchasing power and demand to explore the importance of scale economies and transport costs. The estimation results suggest that all the above factors influence demand linkages between states, which are strong and growing over the period from 1999-2000 to 2007-2008.


Cieślik Andrzej, Prusty Sadananda
Spatial agglomeration Scale economies Wage differentials Regional studies
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