It is generally accepted that only one in five of the world's population has adequate social security coverage. Those without coverage tend to work in the informal economy. The debates around social provision have argued that either the private sector should be the main provider, or the government, or individuals themselves. This book frames the debate, instead, by asking how to develop social protection in ways that can harness the contribution of all potential stakeholders and thus increase support for the growing number of informal workers in today's global economy.