To determine the relationship of cardiorespiratory endurance on job performance in educational sectors. Methods: A cross-sectional study was performed using non probability sampling technique on a sample size of 90 participants. Sample was taken from University of Lahore Gujrat campus. The duration of the study was from July- Septempter2019.Cardiac endurance was assessed by 3-minute step test technique. Job performance of participants was analyzed by work performance questionnaire. Data was analyzed by SPSS version 21.0. Chi square and Pearson correlation coefficient was used to analyze the data. Results: A sample sizeof 90 participants was taken.  Result showed that job performance of most workers in a job similar to yours associated with pulse status with p value 0.007 which was ≤0.05 which shows that it is significant. Spearman correlation was -.283 indicates weak and inverse relationship between both variables. The result of job performance over past year or two associated with pulse status has p value 0.00 which was ≤0.05 which shows that result is significant. Spearman correlation was -.483 indicates weak and inverse relationship between both variables. The result of overall performance on the day you work during the past 7 days associated with pulse status has p value 0.001 which was ≤0.05 which shows that it is significant. Spearman correlation was -.337 indicates weak and inverse relationship between both variables. Conclusions: This research concluded that work performance, absenteeism, mental health and work productivity is significantly affected by cardiorespiratory endurance on faculty in educational sectors. Cardiorespiratory endurance should be increased for overall health because due to decreased cardiorespiratory endurance person will be more predisposed to heart and related other diseases which will eventually leads to more absenteeism and poor job performance.