Resumen: This paper consists of an analysis of environmental management in different enterprises. A classification of the factors that affect the environmental management in a company has been made through a multiple case study of nineteen different companies. Some of the main factors that affect all businesses have been identified, such as customers, the law and competitors. Every company has to comply with the law, although the law affects each sector differently. Depending on the markets in which they operate, customers are more or less aware of environmental aspects. Moreover, it is important to distinguish public from private clients. On the other hand, competitors also need to be taken into account when company decisions are made. All these aspects can be found in different companies with different activities and different characteristics, so enterprises should be aware of them when taking environmental decisions.
