Under the presumption that the postal monopoly applies in its clearest form only to the final delivery process, where scale economies are likely the greatest, the worksharing notion is that a discount should be offered to mailers or competitors1 who do portions of the postal work and then turn the mail over to the postal service for completion of delivery.
Under the presumption that the postal monopoly applies only to the final delivery process, where scale economies are greatest and insurmountable for small businesses, the notion is that a discount should be offered to competitors who do part of the work and then turn the mail over to USPS.