An agent can make an observable but non-contractible investment. A principal then offers to collaborate with the agent to provide a public good. Private information of the agent about his valuation may either decrease or increase his investment incentives, depending on whether he learns his type...

An agent can make an observable but non-contractible investment. A principal then offers to collaborate with the agent to provide a public good. Private information of the agent about his valuation may either decrease or increase his investment incentives, depending on whether he learns his type...

This article analyzes a much debated clause in the 1996 coalition contract between SPD and F.D.P. in Rheinland-Pfalz. Two parties write a contract, based on which decisions under incomplete information have to be made at a later point in time. It is shown that a complex complete contract can...