In the realm of empirical research, it is known that personality traits and cognitive style are related. However, still remain unanswered questions (for example, the results are contradictory about the relationship between neuroticism and cognitive style; also, there is no answer to the question of whether agreeableness is related to cognitive style). Furthermore, although the empirical studies of relationships between personality traits and cognitive style were carried out in various countries, a lack of replicability remains in Lithuania. Purpose. The aim of this study was to reveal some relationships between employees’ personality traits and their cognitive style. Materials and methods. Research participants were 110 employees (58 females and 52 males), who responded to the Kirton’s Adaption-Innovation Inventory (KAI) and NEO-PI-R Inventory. Results and conclusions. The results indicated, that openness to experience is related to innovative cognitive style in the group/rule conformity domain, as well as extraversion in the originality dimension. Also, agreeableness and conscientiousness had substantial negative correlation with the total KAI score, indicating that adaptors are more agreeable as well as more conscientious than innovators. Neuroticism is related to adaptive cognitive style in the originality dimension as well as extraversion in the e,ciency domain. The results of binary logistic regression indicated that extraversion is the predictor of innovative cognitive style while conscientiousness is the predictor of adaptive cognitive style.