"It's more akin to an annual report of a company," says Finance Minister Grant Robertson of New Zealand's first wellbeing Budget, coming up on May 30.

"When a company does an annual report, the back third is the accounts and the front two-thirds is the why and what of the business."

The corporate analogy is one of the ways Robertson makes the case for what he promises will be a big shift in the way the Crown accounts are delivered.

Social and cultural happiness, environmental protection and the future of work are all topics that won't just get a cursory