The present invention is a safety and business productivity system having the following components. One or more cameras capture video data having attribute data, the attribute data representing importance of the cameras. One or more video analytics devices process the video data from one or more of the cameras and detect primitive video events in the video data. A correlation engine correlates two or more primitive video events from the video analytics devices weighted by the attribute data of the cameras used to capture the video data. An alerting engine generates one or more alerts and performs one or more actions based on the correlation performed by the correlation engine.