FACTOR DEMAND UNDER CONDITIONS OF PRODUCT DEMAND AND SUPPLY UNCERTAINTY

The paper develops a theory of factor demand under uncertainty, that encompasses neo-classical factor demand and Keynesian effective factor demand as special cases. The model allows factor demand and output to move positively with product demand, even with a constant product price. This, in turn, permits real wages to move pro-cyclically in response to product demand shocks. In addition the model provides a new perspective on the "adding-up" problem (which posits that total factor payments exceed output if increasing returns to scale exist), and generates positive uncertainty profits that are similar in spirit to those of Frank Knight.