We must stop making excuses and push now for full employment

In his new book, Reset, outlining a plan to get the economy back to top performance, Professor Ross Garnaut makes the radical proposal to keep stimulating the economy until we reach full employment within four years. Excellent idea. But what is full employment? Short answer: economists don’t know.

In principle, every economist believes achieving full employment is the supreme goal of economic policy, because it would mean using every opportunity to get everyone working who wants to work and so achieve the maximum possible rate of improvement in our material living standards.

In practice, however, we haven’t achieved full employment consistently since the early 1970s – a failure that few economists seem to lose sleep over. It’s like St Augustine’s prayer: Lord make me pure – but not yet.

The economists’ ambivalence starts with the truth that, contrary to what you’d expect, full employment can’t mean an unemployment rate of zero. That’s because, at any point in time, there’ll always be some people moving between jobs.

In the days when we did achieve full employment, from the end of World War II until the early ’70s, its practical definition was an unemployment rate of less than 2 per cent.

But then economists realised that the full employment we wanted had to be lasting – “sustainable”. And if you had the economy running red hot with everyone in jobs and using the shortage of labour to demand big pay rises, this would push up the prices businesses had to charge and inflation would take off. The managers of the economy would then have to jam on the brakes, and before long we’d be back to having lots of unemployed workers.

This was when economists decided that sustainable full employment meant achieving the NAIRU – the “non-accelerating-inflation” rate of unemployment. This was the lowest point to which the unemployment rate could fall before wages and inflation began accelerating.

This makes sense as a concept. So the economic managers decided they could use fiscal policy (increases in government spending or cuts in taxes) and monetary policy (cuts in interest rates) to push the economy towards full employment, but they should stop pushing as soon as the actual unemployment rate fell down close to the NAIRU.

Trouble is, the NAIRU is “unobservable” – you can’t see it and measure it. So economists are always doing calculations to estimate its level. But every economist’s estimate is different, and their estimates keep rising and falling over time for unexplained reasons.

In the 1980s, people thought the NAIRU was about 7 per cent. In the late ’90s, when someone suggested we could get unemployment down to 5 per cent, many economists laughed. But it happened.

For a long time, our econocrats had it stuck at “about 5 per cent”. But the rich economies have been stuck in a low-growth trap, with surprisingly weak growth in wages and prices, even as unemployment edged down. This suggests the NAIRU may now be lower than our calculations suggest.

Garnaut recounts in his book US Federal Reserve chairman Jerome Powell saying that, in 2012, the Fed thought America’s NAIRU was 5.5 per cent. In 2020, they thought it had fallen to 4.1 per cent. But this seems still too high because, before the virus struck, the actual unemployment rate had fallen to 3.5 per cent without much inflation.

In Australia, in 2019 the Reserve lowered its estimate to a number that “begins with 4 not 5”, or “about 4.5 per cent”. With wage growth “subdued” for the past seven years, and consumer prices growing by less than 2 per cent a year for six years, this downward correction is hardly surprising. Indeed, Garnaut thinks the true figure could be 3.5 per cent or less.

But Treasury secretary Dr Steven Kennedy said last October he thought the coronacession, like all recessions, had probably increased the NAIRU - to about 5 per cent.

Now get this. Treasurer Josh Frydenberg has said he won’t start trying to reduce the budget deficit – apply the fiscal brakes – until unemployment is “comfortably below 6 per cent”.

Really? That would be well above any realistic estimate of the NAIRU. So the Morrison government is saying it will stop using the budget to reach full employment well before it’s in sight, making reducing government debt its top priority. We’d love to get everyone possible back to work but, unfortunately, we can’t afford it.

So we’re prepared to let continuing unemployment erode the skills of those who go for months or even years without a job because the cost of helping them is just too high. Those likely to be most “scarred” by this will be young people leaving education in search of their first proper job.

But we’ll blight their early working lives in ways that will harm them – and the economy they’ll be making a diminished contribution to - for years to come. That’s okay, however, because we’ll be doing it – so we tell ourselves – to ensure we don’t leave the next generation with a lot of government debt.

Yeah sure. In truth, we’ll be doing it because, so long as I and my kids have jobs, we’ve learnt to live with a lot of other people not having them. We believe in full employment, but we’re happy to continue living without it.

This complacency is what Garnaut says must change. He’s right. He’s right too in saying that with the rise in wages and prices so weak for so long, we should stop trying to guess where the NAIRU is. “We can find out what it is by increasing the demand for labour until wages in the labour market are rising at a rate that threatens to take inflation above the Reserve Bank [2 to 3 per cent] range for an extended period,” he says.

And here’s something else to remember: the Reserve has begun warning that we won’t get back to meaningful real wage growth until we get back to full employment.

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How our economic prospects turn on wage growth

You know the world's behaving strangely when you hear a heavy from the central bank saying it's expecting more "progress" on the "turnaround in inflation", then realise they're hoping inflation will go higher.

That's just what Dr Luci Ellis, the Reserve Bank's third heaviest heavy, told a bunch of economists at a conference this week.

Why would anyone hope for prices to be rising faster than they are? Not so much because higher prices are a good thing in themselves, as because rising inflation is usually a sign of an economy that's growing strongly and keeping unemployment low.

By contrast, very low inflation – say, below 2 per cent – is usually a sign of an economy that's not growing strongly, with unemployment either rising or higher than it should be.

Ellis' remarks are a reminder that the economy's biggest problem at present is weak growth in wages. She knows that if prices started rising faster, the most likely explanation would be higher growth in wages, which employers were passing on to their customers by raising their prices.

What could oblige employers to increase the wages they pay? Their need to retain or attract more workers – particularly skilled workers – at a time when the demand for labour was rising, caused typically by increased demand for the goods and services businesses were employing people to produce.

The point to note here is that the Reserve's mental model of inflation is of what economists used to call "demand-pull" inflation. It's simple: the prices of goods and services rise when the demand for them is outpacing their supply.

Note, too, that this involves an inverse relationship between inflation and unemployment: when one goes up, the other goes down, and vice versa. Economists call this the "Phillips curve", named after its discoverer, Bill Phillips, a Kiwi economist.

Ellis confirmed that, although the economy (real gross domestic product) grew at a trend rate of just 2.4 per cent over the year to September, the Reserve's forecast that growth will pick up to about 3¼ per cent over this year and next remains unchanged.

This will involve a pick-up in wage growth and inflation, she said.

The Reserve is more confident of these forecasts than it was when it first made them in early November. Even so, Ellis admitted to some particular "uncertainties": how much production capacity in the economy is going spare at present, and how much, and how quickly, wage growth and inflation will pick up as spare capacity declines.

How much unused production capacity remains in the economy matters because, until it's used up, the economy can grow much faster than it can once the economy's at full capacity – full employment of labour and capital – without this causing inflation pressure to build.

Once the economy is at full employment, how fast rising demand can cause the economy to grow without also causing higher inflation is determined by the economy's "potential" growth rate – that is, by the rate at which rising participation in the labour force, increasing investment in capital equipment and improving productivity are adding to the economy's ability to produce more goods and services.

That is, how fast potential supply is growing. So the economy's potential growth rate sets the medium-term speed limit on how fast demand can grow before causing a build-up in inflation.

The Reserve's most recent estimate is that our potential growth rate has slowed to 2.75 per cent a year (mainly because of the retirement of the bulge of baby boomers).

But how do we measure how much spare production capacity we have at any time? We measure the spare capacity of our mines, factories and offices mainly by looking at answers to questions in the regular surveys of business confidence.

That's physical capital. In the labour market, idle production capacity is measured by the rate of unemployment.

But it's wrong to think full employment is reached when the unemployment rate falls to zero. That's partly because, at any point in time, there will always be some workers moving between jobs (called "frictional" unemployment).

Also because of a much higher rate of "structural" unemployment. The structure of the economy is always changing, with some industries expanding and some contracting. This increases the number of workers who don't have the particular skills employers are seeking, or who do have them but live far away from where the job vacancies are.

In the old days, there were a lot of low-skilled jobs that could be filled by people who had left school early and hadn't learnt much. These days, there a far fewer of those jobs, so people with inadequate skills are often out of a job.

Economists measure full employment by estimating the rate to which unemployment can fall before shortages of skilled labour cause employers to bid up wages and thus cause price inflation to accelerate.

They call this the NAIRU – the non-accelerating-inflation rate of unemployment – and the Reserve's latest estimate is that it's "around 5 per cent". It says "around" because every economist's estimate is different, so it's wrong to be too dogmatic.

This week's trend figures from the Australian Bureau of Statistics for the labour force in January show the unemployment rate has been steady at 5.5 per cent since July. That's well above the NAIRU.

Over the same six months, however, employment has grown by almost 180,000, or 1.5 per cent, causing the rate at which people are participating in the labour force to rise by 0.4 points to 65.6 per cent – its highest for seven years and a record high for participation by women.

If the laws of supply and demand still hold – a safe bet – this unusually strong growth in the demand for labour should lead to higher wages and then higher prices sooner or later. But Ellis warns it's likely to be "quite gradual".

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