The ISSP is a continuing annual programme of cross-national collaboration on surveys covering topics important for social science research. It brings together pre-existing social science projects and coordinates research goals, thereby adding a cross-national, cross-cultural perspective to the individual national studies. The data of the survey was collected both in the Czech Republic and Slovak Republic. Proportion of cases corresponds to the proportion of both populations. Czech and Slovak versions of questionnaires were identical. ISSP module on social equality concerned beliefs about what factors effect one’s chances for social mobility(e.g. parental status, education, contacts, race, etc.), explanations for inequality, assessments of social conflicts, and related questions. It also asked people to estimate the average earnings of various occupations (e.g. farm labourer and doctor) and what the average earnings of these occupations should be. There were two blocks of Czech-specific questions concerning unemployment and income differentiation.