The growth of precarious employment poses significant challenges to current social assistance income support policies yet it remains largely neglected in policy-making arenas. Drawing upon qualitative data from a study in Ontario, Canada, this paper examines the particular implications of these challenges for lone mothers, who figure prominently both in non-standard employment and as targets for workfare policies. In the context of changing labour markets, the article considers the potential strengths and limitations of Basic Income approaches to achieving economic security for lone mothers.