The goal of the paper is to present the findings of empirical issues concerning personality determinants of engagement. Engagement may be treated as a measure of employee's attitude towards the company. It constitutes an expression of individual's identification with the workplace and a measure of employee's loyalty, it determines satisfaction level and the level of 'emotional attachment' to a company. It also reflects the degree of 'organizational participation' of an employee, being reflected in positive evaluation and undertaking of activities aimed at business goals of a company. From the point of view of business activities it seems particularly significant to be able to identify those aspects which are related to building employee's engagement.