The impact of social security expenditures on economic growth varies according to economic approaches in economics. There are two different approaches to the effect of social security spending on economic growth. Since social security expenditures are public expenditures, they affect growth negatively with the effect of excluding increase compared to the classical ones. According to the Keynesian approach, an increase in such expenditures will increase economic growth with the multiplier effect. There are empirical studies in the literature confirming both views.In this study, the effects of social security expenditures, capital accumulation, total factor productivity (TFP) and democracy index on economic growth in the economy of OECD countries are examined for the period of 1990-2017 and 22 countries with equal numbers of data to be a balanced panel. As a result of the study, both total factor productivity and fixed capital stock inrease make the national income increase in the way appropriate to the literature. When the ratio of social security expenditures to national income increases national income increases too.