President Obama has frequently demanded an increase in the federal minimum wage to $10.10 from $7.25. Meanwhile, dozens of states have set minimum wages above the federal level and politicians from Seattle to New York are congratulating themselves for taking it all the way to $15. Maybe they should look back at the workers they’re leaving behind on their march to progressive-landia. Make that ex-workers.

Last week the Wendy’s Company did a public service on its second-quarter earnings call by explaining how mandated wage hikes...