More than a dozen farms in New South Wales have been swooped on by authorities as part of a crackdown on "shadow economy" activities. Investigations were focused on uncovering unlawful practices, including underpayment of wages and super. · Source: ATO"We're not going to let unlawful practices take root in Griffith. The shadow economy refers to legal and illegal economic activity that is not reported or taxed. It estimates the shadow economy has likely doubled over the last decade.