Chipotle has announced that it will hire 4000 new employees on Wednesday. The chain plans to hold open interviews for 60 applicants at each of its US locations. They’re calling it their national career day, but most of the positions they’ll fill are entrée level crew jobs. A hiring blitz like that sounds like good news for the economy but it’s also a reminder, on this Labor Day, that even as the economy has recovered, many low-paying jobs like those in fast-food, have replaced many better paying middle-class positions. Barbara Bogaev speaks with Gillian B. White, senior associate editor for The Atlantic, who writes on labor and wages.