This should really surprise no one. As any business owner knows the cost of labor, with all the accompanying taxes, insurance, liabilities, etc, is, if not the largest portion, then at least gigantic portion of your cost. Driving that cost up, no matter the motive, will have consequences, and probably unintended ones.
This Washing Post piece has an interesting review of what's coming.
Smaller restaurants won't be able to do this of course, the'll eat the cost, pass it on to the consumer and live or die by whatever standards are dictated to them. But the larger chains, McDonalds (already suffering from a decline in revenue, will.
Look out . . . .