For decades, end users have been studied from a multitude of aspects, attitudes, and perspectives in an attempt to better understand end-user resistance to new technology and to find ways to increase the likelihood of implementation success. Ethical considerations are beginning to emerge in the literature; we propose to build on this work by applying it to information systems implementation. This requires drawing on well-established works in ethics as well as work in the field of end-user satisfaction. This research proposes an ethical foundation validating that leadership and information implementation teams should consider how their decisions might affect end-users with respect to the concept of harm, and so an explicit motivation in implementing information systems should be to do no harm. The Ethical Treatment Index is proposed as a tool to empirically measure end-user harm or lack thereof relating to information systems implementation factors.