It has been my experience that most of my medical errors have occurred towards the end of shift, when I am most fatigued, and this is with an 8 hr shift. I work with nurses that like to do doubles, and many times one has to help them because they are to tired, or one feels like one should help them. 12 hours shifts do not make sense to me from a health and safety point of view. As nurses we should realize our bodies need rest. We are health role models for other workers, so what kind of example are we giving them. I wonder if a study has been done comparing med errors by nurses that work 12 hr shifts versus 8 hr shift nurses. My guess is that is higher. So my question is..are 12 hour shifts good for your health, and the well being of your patients?