Department Heads

VNU e.V.

Department heads - Your experts for special  issues

We established several departments as a second organisational level in the association and to ensure and enhance our wide range of services by sharing the workload. As head of department, you will accompany and independently design a thematic focus in the VNU. The following departments are currently in place:

Energy Management


Jochen Buser

Jochen Buser has been working for GUTcert in Berlin since 2003 and manages the divisions emissions trading and energy services. As auditor and environmental verifier he tries to live the motto in a direct dialogue on site:  From knowledge to action. In the national standardisation work of the German Institute for Standardisation e.V. (DIN) in Berlin, he is a member of the "Energy Efficiency and Energy Management" working committee for many years. Jochen Buser is also a member of the Committee Management Systems sector of the German Accreditation Body. Since 2015 he is the head of department Energy Management at VNU.

Climate Protection

Stephan Schunkert

Stephan Schunkert

Stephan Schunkert is Managing Director of KlimAktiv Consultung GmbH and has been a member of VNU since August 2014. He accompanied the development of the German climate protection strategy and has been active in climate protection for many years. Since 2015 heis the head of the Climate Protection Department at VNU.


Gisbert Braun

Gisbert Braun completed his business administration degree in Würzburg in 1993 with a graduate thesis on the then new topic of eco-controlling and environmental management. In addition to various voluntary activities, he dedicated himself to the then new topics EMAS and ISO 14001 at the Bavarian State Trade Institute and advised, audited and trained companies. In addition to his accreditation as an environmental verifier, he is an auditor for quality, environment and FSC as well as an EFQM assessor and has a qualification as a trainer. Following his appointment as Head of the Safety & Sustainability Centre at TÜV Rheinland, he assumed the function of International Head of Quality & Sustainability at Faber-Castell. During this time, he worked very closely with the socially committed entrepreneur, Graf von Faber-Castell, who died at the beginning of 2016. In addition to sustainability management and reporting, his tasks also included international auditing on social, environmental and quality aspects in cooperation with international trade unions and IG Metall. Since 2017 he has again been working in the international area of TÜV Rheinland.

Gisbert Braun is still active in various committees such as the UN Global Compact, the WWF, GRI, the German Network for Business Ethics and B.A.U.M. e.V. to this day. He has been a member of the board of VNU e.V. since 2013 until 2019.

Environmental Management

Quelle: Dr. Birgit Gieren

Birgit Gieren

Dr. Gieren finished her studies in geology in 1998 at the RWTH Aachen and received her doctorate in 2006 at the Georg-August University in Göttingen. Until 2014, she held a management position in a corporate group company in the field of environmental protection and today runs U.M.S.CON in Aachen on a freelance basis and independently. Her focus is on consulting on environmental protection issues and auditing quality and environmental management systems. Based on her experience, Dr. Birgit Gieren also gives seminars for the training of management system representatives. She has headed the Environmental Management Department since 2016.

Water Risk

Heimer, Bettina

Bettina Heimer

Together with Dr. Markus Berger (TU Berlin), Bettina Heimer heads the Water Risk department, which deals with the effects on the global water balance. After studying meteorology, she worked at TÜV Hessen from 1990 to 2001 and from the very beginning was interested in the emerging environmental management systems ISO 14001 and EMAS. From 1995 / 1996 she was thus able to continue to follow her interest in working with people in consulting, training and as a leading auditor / environmental verifier. Due to a private change she left TÜV Hessen, moved to Bochum, got married and became self-employed in order to continue the previous activities of adult education as well as consulting and auditing of management systems (environment, quality and energy). She has been a member of VNU's Executive Board since 2001 and has been in charge of Water Risk at VNU since 2013.

Business Ethics


Klaus Schuler

Klaus Schuler

Klaus J. Schuler is your contact person for the department of business ethics and the topics around responsible leadership. For more than 30 years he has been working in various companies in the field of executive development. In order to prepare managers even better for ethical reflection, responsible action and sustainable company results, he founded Tripl3Leader GmbH in 2013, for which he has also been managing director since then. Some of his goals in the departmental work is to support the VNU and its members in building a professional network in the field of business ethics and to implement the issue that may initially be perceived abstract in a way that is comprehensible in practice and, above all, relevant to success.