This paper explores the relationship between skill mismatch and public policies using micro data for 22 OECD countries from the recent OECD Survey of Adult Skills (PIAAC). Results suggest that differences in skill mismatch across countries are related to differences in public policies. After controlling for individual and job characteristics, well-designed product and labour markets and bankruptcy laws that do not overly penalise business failure are associated with lower skill mismatch. Given the negative relationship between skill mismatch and labour productivity, reducing skill mismatch emerges as a new channel through which well-designed framework policies can boost labour productivity. Skill mismatch is also lower in countries with housing policies that do not impede residential mobility (e.g. transaction costs on buying property and stringent planning regulations). Greater flexibility in wage negotiations and higher participation in lifelong learning as well higher managerial quality are also associated with a better matching of skills to jobs.