This study investigated the Effect of progressive muscle relaxation technique on stress among computer professionals working in selected private companies, Ernakulam district. The objectives of the study were to assess the level of stress experienced by computer professionals, to assess the effect of progressive muscle relaxation technique on stress among computer professionals and to find out the association of pre-test level of stress experienced by the computer professionals with their selected demographic variables. The study is based on Roy`s Adaptation Model. The research design selected for the study is - One group pre test-post test pre-experimental research design. The present study was done in selected private company in Ernakulam district, among 60 computer professionals and consecutive sampling technique was used to select the sample. Data was collected with the help of work stress scale. The progressive muscle relaxation technique was demonstrated to the participants in a group by the investigator and the participants were asked to practice progressive muscle relaxation for a period of two weeks, 30 mins daily under the supervision of the investigator, followed by the assessment of stress level with same tools after two weeks. The study revealed that there is significant reduction in stress level of subjects after the practice of progressive muscle relaxation.