Öz
Providing qualified service in the service sector where emotional variables are at the forefront is closely related to the mental well-being of managers. However, it is not possible to state that every manager with high mental well-being will provide high performance. Every positive and negative attitude of the managers is interpreted by both subordinates and hotel customers, and the next step is taken according to this interpretation. Therefore, managers' personality traits are also an important factor for performance. In line with this importance, determining the effect of type a personality traits and mental well-being on task performance constitutes the purpose of the research. The research was conducted in Alanya since there has not been a similar study in destination. In accordance with research purpose data set of 154 people obtained by the face-to-face survey method was evaluated. According to result of the research, it was seen that a-type personality traits have a positive relationship and effect on the dimension of importance attached to speed and mental well-being on task performance. Result is important in terms of theoretical and practical contribution in terms of considering type a personality not only with negative qualities such as stress or cynicism, but also in terms of performance and mental well-being.