Walmart has a national minimum of $10 an hour the federal minimum is $7.25. I consider a roughly 25% premium to be a significant increase when talking about salaries. My comment is in regards to these jobs paying minimum wage and the evidence leads me to believe that it is virtually certain that these jobs will pay a significant percentage more than that. (not to mention all the managerial and skilled labor jobs that will pay many times more that will come with them)
Walmart was forced to offer $10 an hour because they were facing staff shortages. The interesting thing is that their profits certainly didn't nose-dive after the bump in their labor's wage rate.