Disclosed subject matter relates to data analytics including a method of evaluating performance of employees of an organization. A performance evaluating system provides a review matrix corresponding to one of plurality of review contexts to recommenders for receiving their feedback including recommender's review score and review comments in the review matrix for the employees. Further, the performance evaluating system generates a system review score for each employee by analysing the review comments and computes a compound review score for each employee and each of the plurality of review contexts using the recommender's review score and the system review score. Furthermore, cumulative evaluation score for each employee is computed using the compound review score, predefined organizational weights and historical evaluation score. Finally, the cumulative evaluation score of is analysed to evaluate performance of the employees and reward them objectively. The method enables unbiased and holistic evaluation of employees in the organization.