Opening product markets up to competition has helped to reduce unemployment in many European countries, according to new research from the Institute for Fiscal Studies.

The study by Rachel Griffith, Rupert Harrison and Gareth Macartney, which was presented at the Royal Economic Society's 2006 Annual Conference at the University of Nottingham, also finds that increased competition has raised workers' real wages. But in this case, the effect is smaller in highly unionised countries.