Income Inequalities in Poland According to Pareto and Boltzmann-Gibbs Distributions

It is demonstrated empirically in the world literature that irrespective of economic, cultural or historical factors income distributions follow universal patterns in different countries and exhibit an exponential (Boltzmann-Gibbs) distribution for low and middleclass incomes and power-law (Pareto) distribution for the highest incomes. In this article we present calculations based on a survey cyclically conducted by Council for Social Monitoring confirming these findings for income distributions in Poland. Obtained parameters of Pareto and Boltzmann-Gibbs distributions are statistically significant and indicate increasing income inequalities in Poland in the years 2003-2011 (which is somehow contradictory to the Eurostat data showing that the trend of increasing income inequalities in Poland reversed after 2005)