For example, fire, explosion and release of harmful substances into the environment or the work area must be prevented. Also action must be taken to reduce a company's environmental impact under normal operating conditions (like reducing the company's carbon footprint) and to prevent workers from developing work related diseases. Regulatory requirements play an important role in both approaches and consequently, EHS managers must identify and understand relevant EHS regulations, the implications of which must be communicated to top management (the board of directors) so the company can implement suitable measures. Organisations based in the United States are subject to EHS regulations in the Code of Federal Regulations, particularly CFR 29, 40, and 49. Still, EHS management is not limited to legal compliance and companies should be encouraged to do more than is required by law, if appropriate.