> As it did several days ago, Rubio’s blamed its declining performance on what it said is the difficulty in doing business in California, where a recent wage hi

> As it did several days ago, Rubio’s blamed its declining performance on what it said is the difficulty in doing business in California, where a recent wage hike to $20 an hour recently went into effect for fast food workers at larger chains. > The current owner of Rubio’s, private-equity firm Mill Road Capital, acquired the company in 2010 for $91 million, a sale that transformed what had been a publicly traded company into a privately owned business.