We study the optimal compensation policy for a corruptible inspector,
charged with monitoring pollution from a factory. Our utilitarian appr
oach focuses on the trade-off among corruption, pollution, and enforce
ment effort. Owing to the strategic interaction between factory and in
spector, changes in compensation policy have surprising effects, e.g.,
raising the penalty for corruption may cause pollution to increase. W
e find that bribery is an inefficient way of encouraging the inspector
to monitor; society should wipe out corruption.