Nancy was a member of the Corporate Social Responsibility Working Group within the Dutch Accounting Standards Board. The task of this working group is to update the 2003 published Guideline 400: the Annual Report and the Guide to Sustainability Reporting especially in relation to sustainability aspects in the supply chain.
Earlier (2001-2003) she wrote as secretary of the former Corporate Social Responsibility Working Party of the Dutch Accounting Standards Board the Guide to Sustainability Reporting. This Guide forms the basis for the questionnaire of the Transparency Benchmark of the Ministry of Economic Affairs. Other members included for example mrs. Jacqueline Cramer, mrs. Gemma Crijns, prof. dr. Frans van der Wel (chair), Tim van Kooten, Arie Kraaijeveld and Chris Knoops.