Marlen Rürup


Name: Marlen Rürup

Position: Senior Analyst of oekom research AG, Munich



  • studied in Hamburg; certificate: M.A. Political Science
  • since 2007 at oekom research

  • responsible for the branch Health Care and Pharmaceuticals & Biotechnology criteria


In the rating is triple A is the best. And then it goes down to D. Oekom research gets information about the company from the company itself, but also from independent experts. That’s where they base their rating on.

The results provide a ranking of the companies examined within an industry, from which the leaders in that industry (those awarded “prime” status) are identified.


Environmental Rating

  • Environmental Management

  • Products and Services

  • Eco-Efficiency

Depending on the products and services it provides, each industry faces different social and environmental challenges. For this reason, oekom research makes around one-third of these criteria industry-specific. All criteria are individually weighted and evaluated and finally aggregated to yield an overall score.

Positive Screening

The assessment of the social and environmental performance of a company as part of the Corporate Rating is carried out with the aid of over 100 social and environmental criteria, selected specifically for each industry, covering six areas:


Social Rating

  • Staff and Supplier

  • Society and Product Responsibility

  • Corporate Governance and Business Ethics

Exclusion Screening

No matter if a company is ranked as "Prime", the applying of specific criteria may lead an ethical oriented investor to refrain from investing in a company. Therefore, oekom research carries out a comprehensive negative screening in a great number of ethical controversial business fields and practices for each company. The specifications of the negative screening and how they look into the companies are described in the following paragraphs:

First they look into the Controversial Business Areas. So on what the company is producing, because some companies got such a production that if you rate it on environmental they will always fail. Some examples:

  • Alcohol, the producers of beer/wine and/or high-proof beverages over a 5 per cent of net sales

  • Military, the producers of weapons and/or outlawed weapons

  • GMOs, the producers of genetically modified plants and animals

Then the company looks into what the company exactly does. If for example the company has child labour, then they will not rate this company. Also if the human rights aren’t attended.


What is this rating for?

For banks it is important to know if a company produces in a sustainable way. Because they only want to do business with those ‘good’ companies, but they make an exception for some of the companies in the controversial business area. It is also important for the individual human to know if a company thinks about the environment.


Her statements on the podium discussion in our school at January, the 25th 2012:

Another aspect is the separation into retail sale and whole sale. Despite this they can look into the companies and analyse about employee, payment, stress management and fair trade.


Critical evaluation

We think that it is strange that the ‘bad’ companies won’ t get rated because then still nobody knows that these companies for example use child labour. But for the rest we think that it’s good that they check the companies for sustainability.


By: Jasmin, Sinem, Silvana, Thessa, Martin

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