Health NZ is standing by it's processes, despite upset over staff having to pay back money received in error

The Nurses Union is raising concerns over the pay back request, as Health NZ still owes workers two billion in under payments.

HNZ Chief People Officer Andrew Slater says at any one time only about million dollars in errors is being chased across a 10 billion dollar pay roll.

He says this is them making sure people are paid accurately, and they're working with tax payer money wisely.

Slater says HNZ is incredibly frustrated at what it owes workers, and they're working round the clock to fix this.