In today modern organization employees performance depends on both monetary and non-monetary benefits provided. When speaking about Knowledge Management the factors can be in and around of organization they work, but when we see to the impact where it affects the result extends to employee performance and employee satisfaction. In this study, the impact of Knowledge Management is analyzed and found employee performance is one of the important effects on an organization. But when comparing the impacts of Knowledge Management on performance and demography, the level of impact changes. Thus in this article the level of significance between Age which is one among the demographic variable and Employee Performance an impact of Knowledge Management is being analyzed.