Alan Willis is an independent researcher, writer, and advisor on the implications of sustainability for corporate performance measurement, accounting, reporting and assurance. Prior to 1991, he was a partner with Deloitte. He represented the Canadian Institute of Chartered Accountants on the founding Steering Committee of the Global Reporting Initiative and was a member of the Working Group of the International Integrated Reporting Council, the Steering Committee of the Global Initiative for Sustainability Ratings, the Advisory Council of the Sustainability Accounting Standards Board, and the Integrated Business Reporting Committee of the International Corporate Governance Network. He has authored or co-authored numerous CPA Canada research and publications about corporate business reporting and accounting for and reporting on sustainable development.