Many standards define safety requirements intended to reduce the risk of personal injury due to electrical shock or fire. Some standards set levels of performance for products, and increasingly standards address social concerns, such as how our environment is managed or how information about us is being used. CSA facilitates committees of volunteer experts to develop standards using a "balanced matrix" approach and has published over 1800 voluntary standards to date. More than one third of these are referenced in legislation passed by jurisdictions throughout North America.