Impact of the selected factors on the men and women wages in poland in 2014. the conjoint analysis application

Abstract

Numerous studies on the labour market relate to the wages. They indicate a significant diversity of factors affecting the remuneration in groups of employees with different characteristics. The aim of the study is to assess the relative importance of selected variables (attributes of employees) on the level of wages. The analysis is conducted for the employees working in Poland in 2014 in the enterprises with at least ten workers. We also take into account the sub-samples included only men or only women. Additionally, an assessment of the impact of outliers on changes in relative importance of analysed attributes was carried out. The analysis is applied the relative importance measure practised in conjoint analysis. The data employed in the study are from the Eurostat’s Structure of Earnings Survey. The results indicated primarily two variables that have greater importance for the diversity of the wages. They are economic activity (industry, according to the NACE rev. 2) and occupation (according to the ISCO-08). Their joint relative importance is greater than 50%. It is also noticeable that along with the elimination of the outliers the importance of the enterprises’ economic activity is increasing and importance of the level of occupation is decreasing. In the samples encompassed men are noted higher relative importance of variables as follows: economic activity of enterprise and size of the enterprise. In turn, in the samples encompassed women we observe higher relative importance for occupation, educational level, age group and contractual working time (full- or part-time).