Dux, there are several fine programs on retention out there.
I highly recommend OSG's class: http://opskillsgroup.com/description_hrc.htm
Benjamin Salas, without question, is one of the up and coming "stars" of the "training community".
"Arguments of policy must give way to a constitutional command." Payton v. New York, 445 U.S. 573, 602 (1980).