This excerpt taken from the POR DEF 14A filed Mar 21, 2008.
Termination of Employment
If a participants employment is terminated, prior to payment of an award, due to the participants death, disability or retirement, the company will pay an award to the participant, or the participants estate, at such time as awards are payable generally to other participants. The award paid to such participant, or his or her estate, will be pro-rated to reflect the number of full and partial months for which the participant was employed by the company during the award year.
If a participants employment is terminated for any reason other than the participants death, disability or retirement, the participant will forfeit all rights to any unpaid awards.