Presently, Werner Wenning holds the position of Chairman-Supervisory Board at Bayer AG.

He is also on the board of Siemens AG and Henkel Management AG.

In the past he occupied the position of Chairman-Supervisory Board for E.ON SE, Vice President of Bundesverband der Deutschen Industrie e.V., Managing Director at Bayer Hispania Industrial SA, Manager-Finance & Accounting at Bayer SA (Peru) and Vice President at Verband der Chemischen Industrie eV.