Signalling in a moral hazard contract with informed principals (that know their own type before contracting)
I'm not sure what exactly you're looking for, but here are some wild guesses:

Bolton and Dewatripont (2005) Contract Theory, MIT Press. [Probably Chapters 5 and 6]
Maskin and Tirole (1990) &quot;The Principal-Agent Relationship with an Informed Principal: The Case of Private Values&quot;, Econometrica 58: 379-409.
Maskin and Tirole (1992) &quot;The Principal-Agent Relationship with an Informed Principal, II: Common Values&quot;, Econometrica 60: 1-42.
Myerson (1983) &quot;Mechanism Design by an Informed Principal&quot;, Econometrica 51: 1767-1797.