Since 2008, France experiences a sharp productivity slowdown. Both output per hour and total factor productivity are particularly deceptive in the market economy. This recent trend contrasts with the acceleration of productivity during the previous crisis in the 1990's and the continuous...

In this paper, we investigate the use of interactive effect or linear factor models in regional policy evaluation. We contrast treatment effect estimates obtained by Bai (2009)'s least squares method with the popular difference in difference estimates as well as with estimates obtained using...