This article focuses on the latter approach, in particular on the occupational gender segregation in relation to the gender segregation in education. The theory of human capital suggests that the increasing level of qualification, talents and productive skills of women acquired in the educational system, training and experience at work, should have a positive impact on quality of women's position in the labour market and enhance gender equality. Given the increasing educational attainment of women over the past decades, one would assume that their position in the labour market, including the gender segregation in occupational categories, has improved as well. However, the results of current research prove that despite all the changes and progress made with respect to the level of education of women, the level of occupational segregation tends to remain relatively stable over time. Thus, the increasing level of education does not seem to have a very strong impact on the overall level of gender segregation in occupations. One of the possible explanations may be the fact that women and men tend to choose different fields of study which predetermine their participation in particular categories of occupational structure to a larger extent than their level of education. Men are still overrepresented in different fields of education than women and this tendency seems to persist even in the countries where a campaign has been led for the promotion of democratic and non-discriminatory practices in the system of education. The main aims of this article are: 1) to conduct a cross-national comparison of levels of occupational gender segregation and 2) to examine the relation between the level of occupational gender segregation and gender segregation in education (both vertical and horizontal). The analyses include 18 European countries covered by the European Social Survey (ESS) conducted in 2004.