The study considers the optimal timing of production decisions under d
emand uncertainty. In accordance with the modern theory of irreversibl
e investment, the problem is modelled as one of optimal stopping. By t
aking an approach which is independent of dynamic programming and the
smooth-fit principle, we derive explicitly both the value of the oppor
tunity and the optimal-demand threshold. We prove that the optimal-dem
and threshold can be attained at a point where the smooth-fit principl
e is not valid. We also carry out the comparative static analysis of t
he optimal variables and derive conditions under which production ince
ntives are held constant. A consequence of this analysis is that along
the iso-incentive curve inflationary policy must be counteracted with
strict monetary policy.