The wage gap between New Zealand and Australia will be monitored by Treasury under the support agreement signed by National and ACT.
On ACT's insistence, there will be annual reports on the gap as well as on progress toward raising productivity.
After the 2008 election ACT's agreement with National created the 2025 Taskforce, which had to find ways to close the gap.
Recommendations in its first report were rejected by the government as too radical, and Prime Minister John Key canned the taskforce before it could issue a second report.
ACT hasn't got it back, but Treasury monitoring will give a clear indication of whether the gap is closing or narrowing.
That's disputed by the government and opposition parties.
Former ACT leader Don Brash says it was 35 percent in 2008 and is probably close to 40 percent now.
NZN