Increasing labour market flexibility is at the top of the European agenda. A new and challenging view is a lack of mobility in the labour market may arise from rigidities in the housing market. The research in this book has been inspired by the intriguing hypothesis that homeownership may be a hindrance to the smooth working of the labour markets, as homeowners tend to be less willing to accept jobs outside their own region. This book shows, at the individual level, that homeownership limits the likelihood of becoming unemployed and increases the probability of finding a job once unemployed. On the other hand, the transaction costs inherent in the housing market and homeownership hamper job-to-job changes and increase unemployment at the country level. This insight provides a clear policy message to European policymakers: reform in the housing market, aimed at lowering transaction costs and providing less generous subsidies for homeowners could be an effective instrument for reducing unemployment and improving labour market flexibility.