WHILE LOADING AN EMPTY WOODEN PALLET ONTO A TRAILER, THE EMPLOYEE TWISTED HIS BACK WHEN THE PALLET HUNG ON THE SIDE RAIL OF THE TRAILER. THE TRAILER AND PALLET WERE INSIDE ON A CONCRETE FLOOR. THE LIFT WAS APPROXIMATELY 18"" TO CLEAR THE RAILBUT THE EMPLOYEE FAILED TO WAIT FOR HELP TO LOADTHE PALLET RESULTING IN A STRAINED BACK MUSCLE.