The investment behavior of the LMF now depends on the precise property rights structure. If workers only acquire usufruct us of of the assets of the firm, these assets must promise a higher rate of return than a savings account (or any other owned asset) if the two investment alternatives are to be considered equally attractive. One dollar invested in a savings account yields after t years a return of (1 + i)^t; by contrast, one dollar invested in the firm yields (1 + r)^t -1. For both total return to be equal we must have r > I, the precise difference depending on the time horizon of the investment project; e.g., for t = 1 we must have r>= 1 + I to make investment profitable. Thus, the requirement of self-financing coupled with non-ownership of the firm’s asset by workers would seriously diminish the propensity to invest of the LMF. The two solutions to this problem are then either to allow for external financing or to give workers full property rights to the firm’s assets. Both solutions are however problematic. The first one may lead to an outside control over the firm, violating one of the basic postulate of LM. External financing could, of course, be organized in various ways. One could be via the capital market with, for example, non-voting shares (Nutzinger, 1975). Another solution would be one like the Yugoslav system where state-controlled bank finance investment projects with long-term fixed interest loans. It is, however, difficult to conceive either way as one guaranteeing the economic independence of the LM firm.