Equation (7) implies that at an optimum, marginal value product should be equal to average value product per unit of work. This rule is depicted in figure 1.
Thus, if the stock of capital is given and equal for a LMF and its capitalist homologue, 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