Abstract: The study sought to examine the effect of leadership styles on employee motivation-a case of Muhoroni Sugar Company Limited in Kisumu County, Kenya. Specifically, the study aimed to determine how directive leadership style affect employee motivation, assess how participative leadership style affect employee motivation, establish how transformational leadership style affect employee motivation, and examine how transactional leadership style affect employee motivation of Muhoroni Sugar Company. Situational Leadership theories and Full-Range Leadership models underpinned the investigation. Research adopted a descriptive research methodology to evaluate the study variables.