Personality in organizational behaviour refers to the consistent patterns of thoughts, feelings, and behaviours that distinguish individuals from one another. It is a crucial factor in understanding how employees interact with each other, approach tasks, and respond to organizational challenges. Personality shapes work habits, motivation, leadership style, and even career choices, making it a central concept in organizational behaviour for predicting and managing employee performance and workplace dynamics. It is not only an individual characteristic but also interacts with organizational culture and job demands, influencing overall effectiveness and satisfaction. Personality is determined by a combination of genetic, environmental, and situational factors. Biological determinants include genetic inheritance, temperament, and physiological aspects, which influence traits such as introversion, emotional stability, and resilience. Environmental determinants encompass upbringing, culture, education, and life experiences, which shape values, social skills, and behavioural tendencies. Situational determinants refer to the immediate context or environment, including organizational culture, team dynamics, and leadership style, which can enhance or suppress certain personality traits. Together, these factors create a unique profile