The relationship between the company size and entrepreneurial activities : the case of Serbia application/pdf 427797 bytes ABSTRACT: More and more companies, regardless of their size start to behave entrepreneurially, adopting the basic postulates of entrepreneurial business and using entrepreneurial management. While small enterprises consider entrepreneurial activity as a key source of growth in the market, the importance of innovation in large enterprises is reflected in their contribution to long-term sustainability of business through the process of continuous adjustment to changes in the environment. One of the ways to achieve this is the consolidation of the advantages of small businesses (creativity, flexibility, innovation, market recognition) with market power and financial resources of a large enterprise. In order to describe the process of entrepreneurial activity of already existing enterprises the term corporate entrepreneurship is used in literature. As the basic dimensions, that is, manifest forms of the concept of corporate entrepreneurship we can mark off: innovations and ventures and self-renewal activities. Although the literature emphasizes the importance of entrepreneurial activity of all enterprises, regardless of their size, in Serbia, entrepreneurial orientation is still most often associated with newly established, small enterprises. According to previously mentioned, the aim of this paper is to identify, on the basis of a sample of 208 companies, the current state of entrepreneurial activity within them and to assess whether there are differences in the level of these activities between small, medium and large enterprises in Serbia. The analysis was carried out for the total level of corporate entrepreneurship, but also for its individual dimensions. In order to test the statistical significance of the differences between the three groups of companies, one-way analysis of variance (ANOVA) was used, while the Tukey post-hoc test was carried out to identify the specific groups among which differences exist. The results of the conducted testing indicate that there are statistically significant differences in the level of entrepreneurial activities between small and medium-sized enterprises, especially when it comes to innovations and ventures. The ratio of the level of innovations and ventures from one side to the size of the enterprise on the other side can be presented by U-curve, which implies that innovations and ventures are the most represented in the case of large and small enterprises, while their level is the lowest in the middle ones. On the other hand, self-renewal activities are decreasing with the growth of enterprise size. The importance of measuring the level of entrepreneurial activities is especially important for economic policy-makers. More precisely, identifying the dimensions that represent the cause of the low level of entrepreneurial activity in each of the observed groups of enterprises can be the first step in creating incentive strategies for their improvement. All rights reserved https://phaidrabg.bg.ac.rs/o:29862 ISSN: 1849-7535 Čeliković, Zorica Keywords: corporate entrepreneurship, company size, Serbia eng 2018 info:eu-repo/semantics/article Economic and Social Development 35 th International Scientific Conference on Economic and Social Development – "Sustainability from an Economic and Social Perspective"