Following Berg's retirement from the World Bank in 1995, he has served as an adviser or consultant to a number of international non-governmental organizations, as well as the World Bank through 2014. He also, through 2010, returned to the Brookings Institution as a Guest Scholar. He continues to serve as a board member of the public health organization Calcutta Kids, providing health and nutrition services to mothers and young children in Indian slums. He maintains active involvement in the development of double-fortified salt.
