Expert nursing assistants (NAs) described a broad range of care activities provided for nursing home residents. Data from in-depth interviews were analyzed using a naturalistic inquiry approach. Functional care activities addressed activities of daily living. Seven types of psychosocial care activities promoted emotional and mental health. NAs also described activities beyond the scope of their training, yet delegated by licensed nurses. Identification of expert NA contributions to resident care, proposed as the highest level of NA care possible, can guide development of educational programs and evaluation instruments. Awareness of delegated activities can direct research regarding their safety and legality.