RBA warning: our supply-side problems have only just begun

In one of his last speeches for the year, Reserve Bank governor Dr Philip Lowe has issued a sobering warning. Even when we’ve got on top of the present inflation outbreak, the disruptions to supply we’ve struggled with this year are likely to be a recurring problem in the years ahead.

Economists think of the economy as having two sides. The supply side refers to our production of goods and services, whereas the demand side refers to our spending on those goods and services, partly for investment in new production capacity, but mainly for consumption by households.

Lowe notes that, until inflation raised its ugly head, the world had enjoyed about three decades in which there were few major “shocks” (sudden big disruptions) to the continuing production and supply of goods and services.

When something happens that disrupts supply, so that it can’t keep up with demand, prices jump – as we’ve seen this year with disruptions caused by the pandemic and its lockdowns, and with Russia’s attack on Ukraine.

What changes occurred over the three decades were mainly favourable: they involved increased supply of manufactured goods, in particular, which put gentle downward pressure on prices.

This made life easier for the world’s central banks. With the supply side behaving itself, they were able to keep their economies growing fairly steadily by using interest rates to manage demand. Put rates up to restrain spending and inflation; put rates down to encourage spending and employment.

The central banks were looking good because the one tool they have for influencing the economy – interest rates – was good for managing demand. Trouble is – and as we saw this year – managing demand is the only thing central banks and their interest rates can do.

When prices jump because of disruptions to supply, there’s nothing they can do to fix those disruptions and get supply back to keeping up with demand. All they can do is strangle demand until prices come down.

So, what’s got Lowe worried is his realisation that a lot of the problems headed our way will be shocks to supply.

“Looking forward, the supply side looks more challenging than it has been for many years” and is likely to have a bigger effect on inflation, making it jump more often.

Lowe sees four factors leading to more supply shocks. The first is “the reversal of globalisation”.

Over recent decades, international trade increased significantly relative to the size of the global economy, he says.

Production became increasingly integrated across borders, and this lowered costs and made supply very flexible. Australia was among the major beneficiaries of this.

Now, however, international trade is no longer growing faster than the global economy. “Trading blocs are emerging and there is a step back from closer integration,” he says. “Unfortunately, today barriers to trade and investment are more likely to be increased than removed.”

This will inevitably affect both the rise in standards of living and the prices of goods and services in global markets.

The second factor affecting the supply side is demographics. Until relatively recently, the working-age population of the advanced economies was steadily increasing. This was also true for China and Eastern Europe – both of which were being integrated into the global economy.

And the participation of women in the paid labour force was also rising rapidly. “The result was a substantial increase in the number of workers engaged in the global economy, and advances in technology made it easier to tap into this global labour force,” Lowe says.

So, there was a great increase in global supply. But this trend has turned and the working-age population is now declining, with the decline projected to accelerate. The proportion of the population who are either too young or too old to work is rising, meaning the supply of workers available to meet the demand for goods and services has diminished.

The third factor affecting the supply side is climate change. Over the past 20 years, the number of major floods across the world has doubled and the frequency of heatwaves and droughts has also increased.

This will keep getting worse.These extreme weather events disrupt production and so affect prices – as we know all too well in Australia. But as well as lifting fruit and vegetable prices (and meat prices after droughts break and herd rebuilding begins), extreme weather can disrupt mining production and transport and distribution.

The fourth factor affecting the supply side is related: the transition from fossil fuels to renewables. This involves junking our investment in coal mines, gas plants and power stations, and new investment in solar farms, wind farms, batteries and rooftop solar, as well as extensively rejigging the electricity network.

It’s not just that the required new capital investment will be huge, but that the transition from the old system to the new won’t happen without disruptions.

So, energy prices will be higher (to pay for the new capital investment) and more volatile when fossil-fuel supply stops before renewables supply is ready to fill the gap.

Lowe foresees the inflation rate becoming more unstable through two channels. First, shocks to supply that cause large and rapid changes in prices.

Second, the global supply curve becoming less “elastic” (less able to respond to increases in demand by quickly increasing supply) than it has been in the past decade.

Lowe says bravely that none of these developments would undermine the central banks’ ability to achieve their inflation target “on average” - that is, over a few years – though they would make the bankers’ job more complicated.

Well, maybe. As he reminds us, adverse supply shocks can have conflicting effects, increasing inflation while reducing output and employment. The Reserve can’t increase interest rates and reduce them at the same time.

As Lowe further observes, supply shocks “also have implications for other areas of economic policy”. Yes, competition policy, for instance.

My conclusion is that managing the economy can no longer be left largely to the central bankers.

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Too soon to say how hard virus will hit economy

To judge by the gyrations of the world’s sharemarkets, the coronavirus has us either off to hell in a handcart or the markets are panicking about something bad that’s happening, but they’re not sure what’s happening, how long it will last or how bad it will end up being. I’d go with the latter.

So would Reserve Bank deputy governor Dr Guy Debelle. He said in a speech this week that there’s been a large increase in the financial markets’ "risk aversion and uncertainty".

"The virus is going to have a material economic impact but it is not clear how large that will be. That makes it difficult for the market to reprice financial assets," he said.

That’s central-bankerspeak for "they’ve got no idea what will happen". Which is hardly surprising, since no one else has, either. More from Debelle’s speech as we go.

But understand this. Farr’s law of epidemics, developed in the mid-19th century, says that the number of cases of a new disease rises and then falls in a roughly symmetrical pattern, approximating a bell-shaped curve.

Depending on how quickly the disease spreads, the bell can have a steep rise and fall or a shallow one. Epidemiologists seek to make the bell as shallow as possible by slowing the disease’s spread. This allows the health system to avoid being overwhelmed – reducing the likelihood of panic and chaos, and making it more likely those who most need medical attention get it.

In theory, it allows more time for the development of a vaccine or useful drugs, but the World Health Organisation has said it will take about 18 months for a coronavirus vaccine to be widely available.

At this stage, the main way of slowing the spread is "social distancing" – reducing the contact between people by cancelling sporting events, closing schools or workplaces or ordering people to work at home. Of course, many people are doing their own social distancing by staying away from restaurants and bars.

The virus has now arrived in most countries. Its spread is well advanced in China, Iran, Italy and South Korea, but much less so in Singapore and Hong Kong, where the authorities got in earlier with their social distancing measures.

Such measures, however, cause considerable inconvenience, especially to parents, and disruption to the economy – both to the production of goods and, more particularly, services, and to their purchase and consumption. Not to mention the associated loss of income.

Some of this economic activity may merely be postponed – so that there’s a big catch-up once the epidemic subsides. But much of it – particularly the performance of services (if you miss a restaurant meal or a haircut you don’t catch up by having two) – will be lost forever.

Obviously, China is central to the story for both the world economy and ours. China’s economy was hit hard by the virus and the drastic but belated measures to slow its spread, though the number of cases does seem to have passed its peak and rapidly declined. Debelle said "the Chinese economy is now only gradually returning to normal. Even as this occurs, it is very uncertain how long it will take to repair the severe disruption to supply chains."

The globalisation of the world economy in recent decades is a major part of the story of this virus. It means people in any part of the world are almost instantly informed about unusual things happening anywhere else in the world. It’s good to be better informed, but sometimes it can be frightening.

For another thing, globalisation has greatly increased the trade between countries, particularly trade in services, such as tourism and education. Trade in services has been greatly facilitated by the emergence of cheap air travel.

It’s all the overseas air travel everyone does these days that has caused epidemics that break out in one part of the world to spread around the world within a few weeks. More pandemics has become one of the big downsides of globalisation.

And when governments try to limit the spread of a virus by banning the entry of people from countries where the virus is known to have spread widely, this disrupts and damages those of that country’s industries who sell their services to foreign visitors.

(When the government stops you supplying a service to willing buyers, economists classify this as a shock to the "supply side" of the economy. When your sales fall because customers become more reluctant to buy whatever you’re selling, that’s a "demand-side shock" to the economy.)

Our imposition of a ban on non-residents entering Australia from China has hit our tourism industry and our universities. Debelle said that, since January, inbound airline capacity from China has fallen by 90 per cent. Until recently, he said, tourist arrivals from other countries had held up reasonably well, "but that may no longer be true".

The Reserve estimates that Australia’s services exports will decline by at least 10 per cent in the March quarter, roughly evenly split between tourism and education. Since services exports account for 5 per cent of gross domestic product, this suggests the travel ban will subtract 0.5 percentage points from whatever growth comes from other parts of the economy during the quarter.

Another consequence of growing globalisation is the emergence of "global supply chains" – the practice of multinational companies manufacturing the components of their products in different countries, before assembling them in one developing country and exporting them around the world.

China is at the heart of the supply chains for many products. So Debelle’s remark about the delay in repairing "the severe disruption to supply chains" is ominous. The Reserve’s business contacts tell it supply chain disruptions are already affecting the construction and retail industries – but there’s sure to be more of this "supply-side shock" to come.

And the shock to demand as - whether through virus-avoidance, necessity or uncertainty - consumers avoid spending money, has a long way to run. But, Debelle said, it’s "just too uncertain to assess the impact of the virus beyond the March quarter".

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