As first Executive Director of the Indonesian Environmental Forum (WALHI) and founding member of Friends of the Environment Fund (DML), Erna Witoelar is a leading force behind Indonesia's environmental movement. She is also a leading consumer advocate in her country and is now the President of the International Organisation of Consumers Unions (IOCU).
Witoelar initiated several nationwide environmental campaigns, and has written extensively on topics covering the environment and consumer protection. She is a strong promotor of the role of NG0s in the development process at national and international level for 20 years. She has served on the Advisory Committee of the Brundfland Commission, and was a member of the Commission on Developing Countries and Global Changes.