This report presents a critical literature review on workplace diversity, addressing its significance in modern business. The introduction highlights the importance of a diverse work environment, emphasizing its role in fostering multiple perspectives, enhancing organizational strength, and adapting to change. The methodology section outlines the use of secondary research, specifically published articles, to explore various aspects of workplace diversity, including cultural differences, gender, and abilities. The literature review synthesizes findings from multiple studies, examining the relationships between workplace diversity and organizational performance. Studies by Leslie, Lambert, Schwab et al., Mitchell et al., Kundu and Mor, Joseph and Selvaraj, Jyoti and Kour, O’Brien et al., Hofhuis et al., Rodríguez-Pose and Hardy, Naranjo-Valencia et al., Zhuwao et al., and Owen and Temesvary are reviewed, each offering insights into different facets of diversity. The report explores how cultural intelligence, gender, and ethnic diversity impact business outcomes, identifying both positive and negative influences. The conclusion synthesizes the findings, emphasizing the importance of effective diversity management for enhanced performance, innovation, and adaptation in the business environment.