Starbucks, the Seattle-based coffee chain, has been in business since 1971. It recently reversed its open-door policy — and here are some other compelling facts about the restaurant.

Enforcement of in-store policies often falls to front-line workers. The union that advocates for their interests wants them to have more input. The union that represents more than 11,000 Starbucks baristas is responding to the coffee chain’s controversial new code of conduct,