Occupational safety, for example, is an important issue for companies that have extensive warehousing operations. If a company wishes to concentrate on fair and safe work, it should orient itself according to existing ethical and social codes of conduct such as the UN Universal Declaration of Human Rights or the Conventions of the International Labour Organization (ILO). The ISO 14001 standard is one of the recommended codes for environmental issues. Companies can use building blocks like these to put together their own customized code of conduct.