Assistive technologies (ATs) are commonly used to improve the quality of life of persons with disabilities. While their utility to a person is usually clear, their cost-effectiveness or economic value is often unclear. There are no tools for specifically assessing the cost-effectiveness of an AT. Such cost effectiveness analysis is often important in workplace contexts where an employer or other agencies are responsible for providing accommodations. In this paper a tool called Quality-Adjusted Work-Life Years (QAWLY) is introduced to measure how cost-effectiveness of AT can be assessed including considerations of extended work-life and improved quality/productivity at work. Case studies are presented that showcase how QAWLY can be used to provide economic data points to be used for decision making involving AT.