David Morley’s extensive experience in international cooperation began when he volunteered to work with street children in Central America in the 1970s  Since then he has worked in community development and humanitarian projects in Congo, Zambia, Mozambique, Sierra Leone, Mexico, Dominican Republic, El Salvador and Brazil.

From 1998-2005 Mr. Morley was Executive Director of the Canadian section of Medecins Sans Frontieres/Doctors without Borders and under his guidance the organization grew from an annual budget of $5 million to $20 million and the number of overseas volunteers tripled. In 2005 he was chosen by the Right Hon. Adrienne Clarkson and John Ralston Saul to serve as the founding Executive Director of the Institute for Canadian Citizenship. He has served on the Board of Directors of the Canadian Council for International Co-operation, as President of the Ontario Council for International Cooperation, and is currently a member of the Board of Directors of the Stephen Lewis Foundation and a Mentor with the Trudeau Foundation.

David Morley's writing on international issues has appeared in the International Herald Tribune, the Globe and Mail, the National Post, La Presse and the Toronto Star, and he is a frequent commentator on radio and television. He co-authored the Canadian bestseller Under the Tree: Creative Alternatives to a Consumer Christmas, a book about environmental and global issues.

His 2007 book Healing Our World: Inside Doctors without Borders has been released in Canada, South Korea, and the United States, where it has been the recipient of a number of awards.

In recognition of his work in international cooperation, the Canadian government named Mr. Morley a recipient of the 125th Anniversary of the Confederation of Canada Medal.