Work is an integral and meaningful part of many peoples lives. Research has shown that the consequences of MCI anddementia (MCI/dem) before the age of sixty-five can profoundly affect a persons vocational situation. Technology playsa significant role in supporting different abilities for people with MCI/dem at communities and home; however, there islittle research to investigate the role of technology and address the technological requirements of people with MCI/demat work who are employed. We propose a new systematic human factors model to study peoples tasks, activities, andrequirements derived from in-depth interviews with six people living with MCI/dem and one caregiver. By characterizingthe barriers or problems faced by people with MCI/dem in the context of cognitive work, we organized individual barriersof the participants in terms of macrocognitive activities and cognitive support requirements.