Businesses that work for a cause are booming (in number)

Would you operate a business -- and use the profit -- purely for a social purpose, like helping the environment, creating a charity or employing those who cannot get work?

A working day at the mattress factory Source: SBS

Swinburne University in Melbourne says there are about 20,000 such enterprises in Australia and they employ 300,000 people.

And the number is growing.