If aggregate demand were to expand, would there be sufficient spare capacity to allow aggregate supply to expand to meet the additional demand? This is the question addressed by the podcast and article below.
If there is plenty of spare capacity, policies to increase aggregate demand could help to take up the slack and thereby achieve economic growth – at least as long as spare capacity remains. In other words, in the short run the aggregate supply curve may be horizontal or only gently upward sloping at the current point of intersection with the aggregate demand curve. This is illustrated by point a in the diagram. A rightward shift in the aggregate demand curve would cause a movement along the aggregate supply curve to a new higher level of real national income (Y).
If, however, there is little or no spare capacity, an increase in nominal aggregate demand is likely to be purely inflationary, or virtually so. This would the case at point b in the diagram. Real national income cannot expand beyond the full-capacity level, YFC. Under such circumstances, any attempt by the government to stimulate economic growth should focus on the supply side and attempt to shift the aggregate supply curve to the right. Examples of supply-side policy include incentives to encourage research and development, incentives for the private sector to invest in new capacity and direct public investment in infrastructure.
Unemployment is not just caused by a lack of aggregate demand relative to aggregate supply. It may be the result of a mismatching of labour supply with the demand for labour. People may have the wrong qualifications or not be where the jobs are. Unemployment may co-exist with quite high levels of vacancies. There may be vacancies for highly qualified scientists, technicians or craftspeople and unemployment of people with low skills or skills no longer in high demand. The same may apply to capital equipment. There may be a shortage of high-tech equipment or equipment to produce goods in high demand and redundant older equipment or equipment in areas of declining demand.
Part of a comprehensive set of policies to tackle unemployment and achieve economic growth would be to focus on the whole balance of the economy and the matching of the demand and supply of inputs.
Many developing Asian countries have experienced rapid and yet relatively stable economic growth over a number of years. In other words, this has not been a short-term unsustainable boom associated with the expansionary phase of the business cycle – with aggregate demand expanding more rapidly than aggregate supply. Rather it is the result of a rapid growth in aggregate supply.
Over the period from 2000 to 2011, several Asian countries experienced average annual growth rates of over 4% and some, such as China and India, much more than that, as the following table shows. The table also shows forecasts for the period from 2012 to 2017. The high forecast growth rates are based on a continuing rapid growth in aggregate supply as the countries invest in infrastructure and adopt technologies, many of which have already been developed elsewhere.
But for aggregate supply to continue growing rapidly there must also be a stable growth in aggregate demand. With the recession in the developed world, some of the more open economies of Asia, such as South Korea, Taiwan, Malaysia and Singapore themselves suffered a slowdown or recession as demand for their exports fell. The Malaysian economy, for example, contracted by 1.5% in 2009.
Given the continuing macroeconomic problems in the developed world, many Asian countries are seeing the need to rebalance their economies away from a heavy reliance on exports. China, for example, is putting more emphasis on domestic-led demand growth. Others, such as Indonesia, have already embarked on this route. As The Economist article states:
Household consumption contributed half of the growth of just over 6% Indonesia enjoyed in the year to the third quarter (its eighth consecutive quarter of growth at that pace). Exports have fallen from about 35% of GDP ten years ago to less than a quarter in 2011. Developing Asia’s combined current-account surplus, which reflects its dependence on foreign demand, more than halved from 2008 to 2011 and is expected to fall further this year.
The continuing success story of many developing Asian economies thus lies in a balance of supply-side policies that foster continuing rapid investment and demand-side policies that create a stable monetary and fiscal environment. A crucial question here is whether they can emulate the ‘Great Moderation’ experienced by the Western economies from the mid-1990s to 2007, without creating the conditions for a crash in a few years time – a crash caused by excessive credit and an excessively deregulated financial system that was building up greater and greater systemic risk.
UK Unemployment figures for the July to September period have just been published. Perhaps surprisingly, the rate has fallen to 7.8% from 8.0% in the previous 3-month period. What is more, there have been similar 0.2 percentage-point falls in each of the two 3-month periods prior to that (see chart below).
This would normally suggest that the economy has been growing strongly and faster than the growth in potential output. But, despite positive economic growth in quarter 3 (see A positive turn of events?), the economy has been experiencing a prolonged period of low or negative growth.
So what is the explanation for the fall in unemployment? (For a PowerPoint of the chart, click here)
One reason is a greater flexibility in the labour market than in previous recessions. People are more willing to accept below inflation wage increases, or even nominal wage cuts, in return for greater job security. Others are prepared to reduce their hours.
The other reason is a fall in productivity (i.e. output per hour worked). One explanation is that people are not working so hard because, with a lack of demand, there is less pressure on them to be productive; a similar explanation is that firms are ‘hoarding’ labour in the hope that the market will pick up again.
Another explanation is that employment growth has often occurred in the low productivity industries, such as labour-intensive service industries; another is that when people leave their jobs they are replace by less productive workers on lower wages; another is that workers are making do with ageing equipment, whose productivity is falling, because firms cannot afford to invest in new equipment. An range of possible explanations is given on page 33 of the Bank of England’s November 2012 Inflation Report.
But with many predicting that growth will be negative again in 2012 quarter 4, the fall in unemployment may not continue. Britain may join many other countries in Europe and experience rising unemployment as well as falling output.
What possible explanation are there for the latest fall in unemployment?
What has been happening to employment, both full time and part time?
What are the different ways of measuring productivity? Why will they be affected differently by a fall in the average number of hours worked?
Why might it be in firms’ interests to maintain the level of their workforce despite falling sales?
Assume that there has been a fall in aggregate demand. Compare the resulting effect on consumption of (a) a fall in wages rates; (b) a rise in unemployment. How might the design of the benefit system affect the answer?
In an attempt to kick start the UK housing industry, the government has proposed a series of measures to reduce regulations.
These include relaxing planning restrictions on building extensions to existing homes, shops and offices; relaxing current rules that all new housing developments should include affordable housing (which often makes little or no profit for the builders); an extra £280m for the FirstBuy scheme that provides loans to first-time buyers to raise money for a deposit; and a new “major infrastructure fast track” scheme, whereby developers of large commercial and residential projects currently stalled at local authority planning level can have their applications ‘fast tracked’ by the national Planning Inspectorate.
The government maintains that the measures will increase the flow of new houses coming onto the market by reducing ‘red tape’.
Critics maintain that the problem of the slump in house building has little to do with a lack of availability of new houses or new plots for building. Rather, it is a reflection of the recession in the economy as a whole. The solution, claim critics, is to stimulate the economy and then the new-build property market will recover along with other sectors.
The articles look at the likely success of these latest policy proposals for the property market.
If one person saves more, then it will increase that person’s consumption possibilities in the future. If, however, everyone saves more, and hence spends less, then businesses will earn less and are likely to respond by producing less if the decline in aggregate demand continues. Hence if a country saves more, people could be worse off. That’s the paradox of thrift.
There is considerable debate around the world at the moment about the desirability of austerity policies. The debate has become more intense with the worsening economic outlook in many European countries and with the election in France of François Hollande who rejects many of the austerity measures of his predecessor, Nicolas Sarkozy.
But can further stimulus be given to aggregate demand without causing a further worsening of countries’ public-sector debt positions and causing a fall in confidence in financial markets? And how would that impact on investment?
And in the meantime, as the economic outlook darkens, people are trying to save more, despite low interest rates. The paradox of thrift seems to be getting more acute. (Click here for a PowerPoint of the chart.)
Why may we be experiencing a paradox of thrift at the current time?
What are the arguments for the use of fiscal and monetary policies to expand aggregate demand at the current time?
What are the arguments against the use of fiscal and monetary policies to expand aggregate demand at the current time?
Can economic growth be stimulated by a redistribution of aggregate demand and, if so, in what way?
Can green investment overcome the paradox of thrift?
To what extent are demand-side and supply-side policies (a) complementary; (b) contradictory? Or, to put the question another way, to what extent may policies to encourage growth in the long term damage growth in the short term and vice versa?
If aggregate demand were to expand, would there be sufficient spare capacity to allow aggregate supply to expand to meet the additional demand? This is the question addressed by the podcast and article below.
Is there ‘spare capacity’ in the economy? BBC Today Programme, Evan Davis and Andrew Sentance (4/12/12)
