UPDATED 8.01pm A new compensation regime for organ donors has become law.

Parliament's finished debating the final reading of National MP Chris Bishop's Members' Bill on the issue.

The Compensation for Live Organ Donors Bill means donors will get up to 12 weeks of their normal income while recuperating after surgery.

Mr Bishop says a caring society recognises sacrifice, and compassionate society supports those in need, and his Bill does both of those things.

He said it will save taxpayer money as research from the University of Canterbury clearly shows there are large fiscal gains for taxpayers from increased support for organ donors.

Health Select Committee member Dr Shane Reddy acknowledged his colleagues' efforts.

"I also want to say thank you to the pioneers of history who give us the opportunity that gives life to others. I commend this action to New Zealanders and it's a pleasure to commend this Bill to the House."

The bill isn't likely to come into effect until next year.