Several years ago, the DOT changed the HOS for truck drivers, most notably requiring 11 hours rest instead of 8. Several of the large carriers, Walmart in particular, took legal action to stop that. As I recall, I have been away from such jolly fun for 9 years, the implementation was postponed by the courts. Changes were made and I am not sure what the final outcome was. Point being, anything the feds do can/will be challenged and my assumption would be the same thing will happen here. No business, when it comes to the rules like this, gives a rat's ass about the employee.