Abstract: A load-bearing plastic pallet, includes an pallet deck having a top surface, and stringers connected in one piece to the pallet deck and so positioned underneath the pallet deck as to form inlet channels for allowing engagement of forks of a fork lift. Insertable in the pallet deck are optional reinforcement members which reduce a flexure of the pallet deck and are held in place in positive and/or non-positive manner by retention members. The retention members are positioned underneath cover boards which are flush-mounted to the top surface of the pallet deck and extend from one cross side to an opposite other cross side.