This dissertation presents a quantitative analysis of the relationship between intrinsic and extrinsic job satisfaction and the voluntary leaving behavior of IT professionals. In addition, the study adds to the validity and reliability of the Udechukwu and Mujtaba Mathematical Turnover Model. Surveyed within the study for their intrinsic and extrinsic job satisfaction factors as well as their voluntary turnover intentions were IT professionals within the U.S. An analysis of the data added to the body of knowledge in job satisfaction presenting that IT professionals elicit from both intrinsic and extrinsic job satisfaction in regards to their voluntary turnover intention. The results suggest that the intrinsic satisfaction factors of independence, variety, creativity, ability utilization, moral values, security, and responsibility and the extrinsic factors of co-workers, compensation, and working conditions are significant in an IT professionals voluntary turnover intention. Lastly, this research has established that a relationship exists between intrinsic and extrinsic satisfaction and intentions of quitting and Udechukwu and Mujtaba turnover model. It also established the extent to which variances of each of the independent variables (intrinsic and extrinsic satisfaction) contributed to the intentions of quitting and Udechukwu and Mujtaba turnover model. The intention of quitting instrument was also used to validate the Udechukwu and Mujtaba turnover instrument. The results showed that both instruments, though designed with different theoretical basis, were indeed correlated, thus, validating the Udechukwu and Mujtaba turnover model. The research went on further to show if there were statistical differences between the variances of both the intrinsic and extrinsic for both turnover models. The result shows that the differences were statistically significant as well. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]