Average Big Mac costs $5.11 in California. The average cost in Texas is $4.39. That's a 14% increase. Average hourly rate of a crew worker in California is $14.86. In Texas it is $11.11. That is a 33% increase. While higher wages do raise the cost of goods, the entire wages increase isn't rolled into the price of goods.
There's more. I know the retort will be well they work less hours. The average annual salary in California is $30,906 vs $23,106 in Texas. An increase of 33% so it doesn't appear hours are affected at all.