An electrically-powered device intended to support and position a patient (disabled and/or discomforted) in a sitting posture while performing activities of daily living, including work-related activities. It is designed with at least one electrically-operated ergonomic adjustment (e.g., height and position adjustments) to provide improved personal body posture and/or to help prevent/reduce physical problems associated with poor mobility or sedentary lifestyle. It is not a wheelchair.