Diana Gibson has engaged in policy research and education nationally and internationally on issues ranging from health care, inequality and labour rights to energy and trade policy. She is a founding director of The Firelight Group research cooperative and the Canadians for Tax Fairness, a director of PolicyLink Research and Consulting and a research advisor with the Canadian Centre for Policy Alternatives and the University of Alberta's Parkland Institute. She authored the book, The Bottom Line: The Truth Behind Private Health Insurance in Canada.