This document, authored by Lord-Emmanuel Orock Tambe-Eyong, provides an in-depth analysis of personality and intelligence within organizational contexts. It examines critical concepts such as proactive personality, the idiographic and nomothetic approaches to personality study, and the relevance of the psychoanalytical perspective. The text emphasizes the importance of the Big Five factor theory and emotional intelligence in enhancing workplace dynamics. Additionally, it discusses the role of personality assessments, including projective tests, in employee selection and development, offering a scientific basis for understanding individual differences. By integrating theoretical foundations with practical applications, this work serves as a valuable resource for students and professionals seeking to understand the complexities of personality and intelligence in the workplace.