We have built Spoken Corpora using voice data that were obtained by monitored and recorded daily nursing assignments in hospitals. The devices, we have developed are able to monitor daily nursing assignments and record multimedia data, such as video, voice, pedometer, acceleration, and. so on. Focusing on voice data, we have built two types of corpora one for analyzing nursing tasks and the other for collecting nursing terms. This work represents the first trail in Japan to develop such special devices and to make corpora for understanding nursing assignments. In this paper, we report our experiments done in "E-nightingale Project," present an effective task analysis of nursing activities, and describe results of an analysis of nursing terms for developing "Automatic Time Study Survey System."