the level of optimal employment in a LMF (L1) is inferior, or at best equal, to the employment level of a CF (L2). Only if the CF were making losses, would optimal employment fall short of the one in a LMF. In other words, the intensity of capital per worker in a LMF is superior or equal to the one in a CF. The case of equality is obtained when profits in the CF are equal to zero. Indeed, in this case, we have