In the last years, the Bulgarian business organizations and government bodies were facing with the increased needs to implement new standards which could bring a higher benefit for companies and also not to affect the environment. The ISO 14 000 Family is based on standards for environmental management and gives the possibility to be applied in any type of organization, public or private sectors, administrations, etc. The main aim of the publication is to trace the implementation of ISO 14001 in Bulgaria by sectors and type of activities. As well this research offers the main reasons to the Bulgarian firms to implement ISO 14001. For reaching the aim, the study made a review of a) Evolution of ISO 14001 and its flexibility, in compliance with changes in the environment and business; b) Research of the firms which implemented ISO 14001 in Bulgaria, c) Content of the activities in the certification cycle. The used methods are according to the research system of the Bulgarian firms which implemented ISO 14001. Finally, some conclusions were drawn about the development of the ISO 14 001 in Bulgaria.
