Environment management in contemporary business represents the key question for companies striving for sustainable development, and should be a part of every business strategy. Organisational environment management systems are voluntary management tools applied worldwide. Sustainable development concept appeared at the end of the 20th century, its goal being to balance economic development, social welfare and environment protection. In order to achieve greater market competiteveness, image improvement and cost reduction, companies often apply environment management systems. Aforementioned systems accepted in European countries are ISO 14001 (Environment Management System) and EMAS Regulation (Ecological Management and Independent Evaluation System). Since introducing said systems brings numerous advantages, the number of certificates issued is rising each year. This study describes basic terms od sustainable development, environment management system, management system on business level, along with norms for environment protection management (ISO 14001 and EMAS). The ISO 14001 norm will be described in detail, as well as its planning, implementation, and maintenance in the already existing system. Examples of organisations with good practice in environment management and positive impact on sustainable development are analyzed. The end of this study suggests guidelines for improving the already existing systems.