In the next few weeks, half a dozen US states are expected to pass legislation that will for the first time protect companies which value their social impact as much as the bottom line. Whether it's buying locally, protecting the environment or launching community projects, the new benefit corporations" have a common mission - to do well by doing good. "It's becoming a national movement," says Penny Jones-Napier, owner of the Big Bad Woof pet store in Hyattsville, Maryland, the first business in the US to adopt the new benefit corporation designation. "What started with small businesses is moving into the mainstream." As a benefit corporation, Big Bad Woof is protected from legal action if it makes decisions that aren't in the financial interests of its shareholders. The company can support local suppliers for instance, even though that might not be the cheapest option and could reduce the profit margin. Seven states, including New York and California, have already adopted the new business class. These seven states combined produce a third of America's annual economic output, which makes their support for benefit corporations significant.