Water, electricity, office supplies, manufacturing and production materials, building materials etc form resources that a company uses. Conservation of such resources is an important environmental measure taken by companies. These include restrictions and reductions in the use of resources, recovery of (re)usable resources from waste products, recycling of resources after adequate processing. Companies also resort to the use of certified products that have had minimum environmental impact, and have been included in a comprehensive resource recovery cycle, including post-production processing. Thus company purchasing decisions are increasingly including environmental concerns in their choice of supplies, materials and refills.
Resource conservation measures have also covered maintaining regulatory compliance, chemical source reduction, emissions control, equipment review and construction support, and product stewardship. Increased 'returnable' content in a product or its packaging has also been used in conservation efforts.