Quality of Work Life is the extent to which human resources are capable to shape their career vibrantly, in accordance with their opportunities, needs and interests. It is also amount of power that an employer provides to its employees to draft their works. The aim of the study is to investigate the impact of job performance on quality of work life and to find out if there is an quantitatively demonstrable relationship among these two variables. This quantitative research was carried out on 600 research samples from engineering colleges in Tamilnadu. Statistical tools, such as Factor analysis and Regression analysis were used to analyse the data. The findings of the study indicate the clear impact job performance has on quality of work life. The results of the study further prove that the change in Job Performance factor explains the changes in quality of work to the extent of 84.11 percent. The significant ‘F’ statistics reveals the validity of the regression model. Hence job performance impacts quality of work life to greater extent.