Recently importance of elderly nursing care is increasing. The nursing care can be decomposed into tasks which affect the elderly people directly and tasks which affects the elderly people indirectly. "Project to promote the development and introduction of robotic devices for nursing care" which was launched by the Ministry of Economy, Trade and Industry (METI) aims to support the former one. It is important to evaluate the effect of the devices in real nursing facilities. The paper presents future prospects to evaluate the robotic devices for nursing care. The first one is subjective evaluation. The authors have developed a framework for sharing data of business processes and events. The framework provides subjective information to evaluate the robotic devices. The second one is objective evaluation. The authors are investigating methodologies to estimate the absolute value of muscle force from myogenic potential. The estimated force will help objective evaluation of the robotic devices.