text: the master lease agreement, and the master lease supplement and equipment receipt are what?   i am not sure exactly what you are referring to but the master lease agreement, supplement and receipt are used in the transportation field.  it is an agreement between a carrier and an owner operator used to haul tonnage.  the master lease is used to cover the hauling and rights of the product.  the supplement is in addition to the master lease,  the equipment receipt is pretty much what it says,  they have the receipt of your equipment for their exclusive control.