This document discusses social protection concepts and approaches and their implications for international development policy and practice. It provides background on social protection, defining it as public actions taken to address socially unacceptable levels of vulnerability, risk, and deprivation. Social protection encompasses social assistance, which transfers resources to eligible vulnerable groups, and social insurance, which is financed by contributions and based on risk-pooling. The document discusses rationales for social protection including promoting social stability and equity. It outlines principles for social protection policy development, noting policies should be responsive, affordable, sustainable, and build on individual and community capabilities. The policy context discusses how globalization increases both opportunities and insecurity worldwide.