As usual, your anti -labor theory goes straight into the crapper when it comes down to fair compensation for that 3rd trailer, and it borders on criminal abuse because it is such a fantastic deal for the companies. I lived through the nightmare of forcing triples into inclement weather with threats and intimidation against drivers that tried to comply with the permit restrictions regarding weather. ABF, thankfully never did that, and I appreciated working for them. If that 3rd trailer paid what it really was worth, companies wouldn't force them out into dangerous driving conditions. For every 2 sets of triples, they get 35,000 + lbs of high revenue LTL hauled for 10 cents per mile plus permits and slightly more fuel than a set of doubles takes. Do you see the potential for abuse here?No employee, Teamster or otherwise, ever gets ripped off if he is paid the agreed to rate for the work he performs.
Your argument is foolish. If you think you should be paid by the volume of freight on a trailer, I guess being paid the same rate for empties as for loads should be addressed.