Social networks provided companies with the possibility to nurture interactive communication with customers. The key determinant of success in organic reach on social networks is customer's engagement. The question is, what causes intensive usage and engagement on brand fan pages on Facebook. Functional and hedonic determinants exist. Functional value means that the consumer perceives content on the brand page as helpful, useful and practical. Alternatively, hedonic value consists aspects such as fun, excitement or entertainment. The whole model would not be completed without the consequence of engagement which is intentional brand loyalty. To answer the research question, quantitative survey research strategy was used to collect data from a representative sample of 454 respondents with the aim to validate the model. Results showed statistically significant correlations between all constructs. Thus, there are practical implications of presented findings in the conclusion