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Wednesday, May 8, 2024

Michael Reddell: The Treasury and productivity


Late last week The Treasury released a new 40 page report on “The productivity slowdown: implications for the Treasury’s forecasts and projections” (productivity forecasts and projections that is, rather than any possible fiscal implications – the latter will, I guess, be articulated in the Budget documents). In short, if (as it has) productivity growth has slowed down a lot then it makes sense not to rely on optimistic assumptions about rebounds in productivity growth based on not much more than hopeful thinking. Fortunately, “wouldn’t it be nice if productivity were to grow faster” does not seem to be The Treasury’s style.

It was a slightly puzzling document though. The global (frontier) productivity growth slowdown has been around for a couple of decades now, and so is hardly news. There isn’t much (if anything) new in what The Treasury writes about that. But there also isn’t much new on New Zealand, and although there are a few interesting charts in the paper, there is very little attempt to get behind them and think about the fundamental economic factors that might be influencing those trends in the data. As an example, we are told “increasing business R&D raises the prospect of productivity benefits”, but there is little sign of any analysis of what it is that leads firms to choose (or not) to undertaken R&D spending (or spending now classified as R&D) in New Zealand. Much the same goes for business investment more generally. The decline in foreign trade as a share of GDP is noted, but it seems to be treated as some sort of exogenous event that just happened, with no attempt to offer an economic (or economic policy) interpretation. More generally, it was striking that neither the nominal nor real exchange rate gets even a single mention in the entire document.

Treasury seems to have been at pains to point out that this 40 page paper wasn’t intended as a policy document, or to address at all the much bigger issue of the huge and decades-long gap between New Zealand’s average labour productivity and that leading and highly productive economies. But they are, as they like to boast, the government’s premier economic advisers. And although they refer readers to their recent Briefing for Incoming Ministers, suggesting that “The Treasury’s Briefing to the Incoming Finance Minister outlines the Treasury’s strategic advice on the opportunities to lift productivity”, it is thin pickings there too. I hadn’t previously read the BIM (low expectations of such documents these days) but when I checked it, the main substantive document amounted to fewer than 30 pages (including lots of charts and full page headers) covering all areas of policy. There was, I think, two pages on productivity. Perhaps they tailored their product to the perceived interest of the customer (few recent governments have shown any serious interest in addressing the productivity failure) or perhaps the premier economic advisory agency just had little of substance to say.

One of my favourite (if depressing) charts over the years has been this one (where tradables here is primary and manufacturing components of GDP plus exports of services). It is doubly depressing because when I first saw it – devised by a visiting IMF mission – was in about 2005, when per capita tradables output had only just started going sideways.


Click to view

This increased inward-looking nature of the New Zealand economy – across successive governments – gets very little attention in The Treasury’s document.

But perhaps what struck me most – and prompted me to write this post – was the near-complete absence of any discussion about productivity performance in those advanced economies that weren’t at the frontier (there is plenty of international discussion about the frontier, since the countries concerned are the US and a bunch of EU countries) but were or are about New Zealand’s level of average productivity. In fact, I suspect the impression a casual reader would get from Treasury’s document is that everyone has experienced slower productivity growth together.

And that is really, at best, only part of the story.

I put this chart on Twitter a couple of weeks ago


Click to view

These were the group of OECD countries that had moderately close average levels of labour productivity to that of New Zealand at either the start or the end of the period. The period itself was simply a round number: the most recent decade for which there is complete OECD data.

And New Zealand has done really badly over that decade, so badly in fact that of these far-from-frontier economies, only Greece did worse than New Zealand. And these were all countries that, being far from the frontier, had – in principle – significant catch-up or convergence opportunities. More than a few of them realised those opportunities. New Zealand languished.

(Nor is there any mention/discussion of how the experience of Australia and Canada – both richer than us, but otherwise with some similarities around policy experiments and economic structures – have also had woefully bad productivity performance in the last five or so years. Perhaps there are lessons to be learned, insights to be gained?)

I’m not really sure what The Treasury’s purpose was in writing and publishing the productivity document was. But we – and I include ministers here – deserve better from the government’s premier economic advisory agency. The government having – sensibly in the circumstances – scrapped the Productivity Commission, we really need more than ever a high-performing Treasury. It isn’t obvious that we have one, or that it is being led by someone with the interest in or capacity to deliver excellence. Her term expires shortly

Michael Reddell spent most of his career at the Reserve Bank of New Zealand, where he was heavily involved with monetary policy formulation, and in financial markets and financial regulatory policy, serving for a time as Head of Financial Markets. Michael blogs at Croaking Cassandra - where this article was sourced.

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