This excerpt taken from the WMT 8-K filed Mar 7, 2006.
Distribution in the Event of a Directors Death. Each Director who defers any part of the Retainer payable to him or her in any Plan Year must designate one or more beneficiaries of the Directors Deferral Account and Unit Account, who may be changed from time to time. The designation of a beneficiary must be made by filing with Wal-Marts Secretary a form prescribed by Wal-Mart. If no designation of a beneficiary is made, any deferred benefits under this Plan will be paid to the Directors or former Directors estate. If a Director dies while in office or a former Director dies during the installment payment period, Wal-Mart will issue the Shares and pay the amounts of cash that are issuable and payable to the Director or former Director at one time as soon as practicable after the death of the Director or the former Director.