Certification to ISO means that effective management controls are in place that is clearly defined in writing. These controls include the management of authority, responsibility and the ability to take corrective action to resolve problems. The ability exists to demonstrate that planning and review of equipment and personnel skills are adequate and maintained to a standard which ensures that contract requirements are met and preventive actions are made before manufacturing begins. ISO 14001 sets out the criteria for an environmental management system. It maps out a framework to set up an effective environmental management system, to be used to improve resource efficiency, reduce waste and drive down costs. Using ISO 14001 can provide assurance to company management and employees as well as external stakeholders that environmental impact is being measured and improved. ISO 14001 can also be integrated with other management functions and assists companies in meeting their environmental and economic goals.