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.

Please send your paper by e-mail: mbB|nqis_kAF[JPSN]6ozUZI+7X]#[eR1hX`QdA\}5OaHB0f+g&7??5'E 

Please send 2 files:

(1) the main text without the title of the article and the authors (DOC/DOCX file) and

(2) the title page including: the title of the paper, the authors and their affiliation (DOC/DOCX file).

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Number of Results 4

WP(15/2013)100. Ethnic Competition or Complementarity: Which Drives (Returns to) Self-employment?

Authors: Nestorowicz Joanna, Tyrowicz Joanna
This paper explores the relationship between ethnic competition and complementarity in returns to self-employment. We use detailed individual data from the U.S. censuses. We find that while in general business competition is detrimental to profitabil…

WP100. Ethnic Competition or Complementarity: Which Drives (Returns to) Self-employment?

This paper explores the relationship between ethnic competition and complementarity in returns to self-employment. We use detailed individual data from the U.S. censuses. We find that while in general business competition is detrimental to profitability, higher self-employment concentrations of co-ethnics are associated with increase in returns.


Nestorowicz Joanna, Tyrowicz Joanna
self-employment ethnic entrepreneurship competition complementarity

WP(9/2011)49. Does a change of occupation lead to higher earnings?

Authors: Pęczkowski Marek, Liberda Zofia Barbara
The aim of this paper is to identify how the mobility between different types of broadly defined occupation (hired work, self-employment in industry, services and agriculture or social security beneficiaries) changes personal income of individuals. W…

WP49. Does a change of occupation lead to higher earnings?

The aim of this paper is to identify how the mobility between different types of broadly defined occupation (hired work, self-employment in industry, services and agriculture or social security beneficiaries) changes personal income of individuals. We apply the Markov matrices to the panel data on 30540 individuals for 2007-2008 from the Polish Household Budget Surveys. Our hypothesis is that a change of occupation affects individual capability to earn income, controlling for the occupation a person quits and the occupation a person starts, as well as age, education level and a permanent or temporary character of work. We test our hypothesis using the regression analysis. Our results show that the inter-occupational mobility matters mostly for those quitting hired work for self-employment, for the better educated, as well as for respondents above 60 years of age.


Pęczkowski Marek, Liberda Zofia Barbara
income earning mobility occupation hired work self-employment

WP(7/2011)47. Known Knowns and Known Unknowns of Immigrant Self-employment. Selected issues

Authors: Nestorowicz Joanna
The paper presents a review of selected definitional issues, theoretical concepts and most recent empirical evidence related to the phenomenon of immigrant self-employment. Based on the appraisal of gathered material it also points to possible areas …

WP47. Known Knowns and Known Unknowns of Immigrant Self-employment. Selected issues

The paper presents a review of selected definitional issues, theoretical concepts and most recent empirical evidence related to the phenomenon of immigrant self-employment. Based on the appraisal of gathered material it also points to possible areas of development of future research in the field.


Nestorowicz Joanna
self-employment ethnic entrepreneurship middleman minority ethnic enclave literature review state of the art

WP(2/2010)25. Cynicism Starts Young: Age and Entrepreneurship over Transition

Authors: Tyrowicz Joanna, Nestorowicz Joanna
Studies of self-employment determinants in developed market economies comprise the effects of business cycle, changing social structures or legal framework, industrial organization regulations and government policies. This paper contributes to the li…

WP25. Cynicism Starts Young: Age and Entrepreneurship over Transition

Studies of self-employment determinants in developed market economies comprise the effects of business cycle, changing social structures or legal framework, industrial organization regulations and government policies. This paper contributes to the literature by analysing the cyclical patterns of self-employment determinants taking into account both the trends associated with the transition and the variability induced by economic and labour market fluctuations. We construct a consistent panel of entrepreneurship choice models based on consecutive quarterly labour force surveys for Poland - a country with nearly highest self-employment rates in CEECs and the EU - across the time span 1995q1-2008q4 and trace changes in the marginal effects estimators. We find that the notion of self-employment as survival strategy emphasised previously in the literature exhibits stronger in the periods of the labour market contraction. We also demonstrate that young university graduates prefer wage employment to entrepreneurship.


Tyrowicz Joanna, Nestorowicz Joanna
self-employment transition cyclicality selection models
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