The topic of this paper is the relationship between employee characteristics and work behavior. Each individual has a unique personality that distinguishes him from other people and understanding someone's personality gives us clues about how that person will behave and feel in different situations. Different models explain people's behavior. We distinguish the model of the "big five" personality factors, which consists of five dimensions: extraversion, agreeableness, conscientiousness, openness to experience, and neuroticism. To understand dishonest and manipulative behavior, the dark triad of personality is important, consisting of three different but overlapping personality traits, namely narcissism, Machiavellianism and psychopathy. Organizational behavior studies how people behave in organizational environments. The most important determinants of behavior at work are: innovation, job performance, Organisational Citizenship Behavior and Counterproductive Work Behavior. Special emphasis in this paper is placed on the connection between the dark triad of personality and innovative work behavior. The research shows that there is no statistically significant correlation between the characteristics of the dark triad and the innovation of work behavior as a whole, and that the hypotheses about the impact of the dark triad on innovative work behavior can be rejected.