We are pleased to present the methodological workbook "Integrative Activities of Social Economy Entities," which aims to present the methodological and organizational assumptions of a study implemented for the first time in the Public Statistics Statistical Research Program 2021. This biennial study complements research in the social economy conducted within public statistics and ensures the sustainability of the results of the "Integrated System for Monitoring the Social Economy Sector" project, implemented between 2016 and 2023 in partnership with the Ministry of Family, Labor and Social Policy and co-financed by the European Union. The study aims to analyze the integrative function of social economy entities and develop key indicators for planning and monitoring policies at the central and local government levels in the area of the social economy.