The research on Employee Engagement and its Impact on Business Performance explores how employee satisfaction and engagement drive organizational success. The objective is to assess the correlation between employee engagement and business performance, specifically profitability, productivity, and retention rates. A mixed-methods approach was used, incorporating quantitative surveys and qualitative interviews with employees and managers. Results show that companies with highly engaged employees saw a 21% increase in profitability, a 17% boost in productivity, and a 59% reduction in voluntary turnover. The study concludes that leadership, recognition programs, and work-life balance are pivotal to maintaining high engagement levels, which significantly improves business outcomes.