A project requires an initial specific investment. The total cost of t
he project depends on the probability that the supplier will experienc
e a delay in the production schedule. This probability is the supplier
's private information. The buyer would like to hire a supplier with a
low probability of delay. However, it can offer a screening contract
only by committing to terminate the project if the supplier is not abl
e to complete it within the original budget limits. We show that cost
observability may prevent the buyer from terminating a cost overrun pr
oject and this, in turn, prevents screening out 'bad' suppliers. Thus,
we provide an example in which superior monitoring ability represents
a disadvantage for the buyer. This finding contrasts with the common
argument that better monitoring represents an advantage of integrated
organizations.