The effects of firm size on job quality : a comparative study for Britain and France / Alex Bryson (University College London, IZA and NIESR), Christine Erhel (Université Paris 1 Panthéon-Sorbonne and CEET), Zinaïda Salibekyan (CNAM, LIRSA, CEET and LEST) ; IZA, Institute of Labor Economics. Bonn, Germany : IZA Institute of Labor Economics, March 2017