Recently, the medical incident reporting system has been used in many hospitals andstrategies for prevent accidents from occurring are being put in place. During the period of three months from April through June 2008, a total of 36 incidents were reported in our hospital. Of the total, 15 incidents (41.6%) took place owing to personnel's inattention. Our way of taking preventive measures was reactive, and we tended to become oblivious of the latest accident over time and repeated the same mistake. In order to maintain our consciousness on accident prevention, we have recently started using 10 minutes during the morning assembly to remind ourselves of what we should do -- such as identifyingpatients, confirming injections and medications, and exchanging needles -- through role-play and questions and answers. Three months after this practice got started, the number of the accidents due to inattention reduced to seven cases. In response to a questionnaire survey, almost all the nurses said that the repeated practice helped raise their awareness of accident prevention. The use of 10 minutes in the morning for accident prevention enabled them to start their work with their seat belt fastened. We thought this also contributed to accident reduction.