Starbucks baristas are walking off the job all over the U.S. following a new dress code policy. But Arizona employees say it's about more than that.

More than 2,000 Starbucks baristas at 120 U.S. stores have gone on strike since Sunday to protest a new company dress code.

Starbucks and the union had temporarily agreed to collective bargaining over dress code changes as part of ongoing negotiations for a new contract. In December, a bargaining session with the company failed to produce better wage gains.