I'm not sure of the exact number but that $56/hr labor cost includes what the call legacy costs. This is all the benefits paid to past and present workers for all benefits. It's the actual cost to the company per employee, not what the guy takes home. I would bet out of that $56/hr, "Joe 6-pack" gets $35/hr, $25/hr after taxes.
Still not bad, but no where near the $56/hr that gets reported.