Livestock Marketing Fairness Act - Amends the Packers and Stockyards Act, 1921 to prohibit a livestock sale forward contract (with an exception for specified cooperatives) that: (1) does not contain a firm base price that may be equated to a fixed dollar amount on the contract day; (2) is not offered for open public bid; (3) is based on a formula price; or (4) provides for the sale of more than 40 cattle, 30 swine, or other livestock in a quantity as determined by the Secretary of Agriculture (USDA).
Defines: (1) "firm base price" as a transaction using an external source reference price; (2) "formula price" as any price term that establishes a base from which a purchase price is calculated on the basis of a price that will not be determined or reported until a date after the forward price is established (with specified exclusions); and (3) "forward contract" as a livestock purchase contract that provides for livestock delivery to a packer at a date that is more than seven days after the date on which the contract is entered into, without regard to whether the contract is for a specified lot of livestock or a specified number of livestock over a certain period of time.