ECO2002 Macroeconomic Policy and Performance Solutions
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Macroeconomic Policy and Performance
ECO2002
Solutions
Section A – use a Section A answer book
Answer ONE question
1 (a) GDP per capita in Luxemburg is roughly 2.5 times the EU 28
average. Ireland’s GDP is over 1.8 times the EU 28 average and Germany’s about 1.2. The GDP per capita of the UK, France and Italy are close to the EU average. What factors do we need to bear in mind in interpreting these statistics?
Answer:
To properly answer this question, we must consider the difference between GDP and GNI. GDP includes the income of all the agents that contribute to production within a given geographic location, irrespective of their residence and nationality. GNI, on the contrary, considers the residence of those that produce, irrespective of the geographic location in which they contributed to production. GNI = GDP + incomes earned abroad by resident entities and subtracting incomes generated by non-resident entities with the country. Thus, GNI per capita offers a better idea of the standards of living of the population in a country than GDP per capita does.
This distinction is particularly important as many of the workers in Luxembourg are not residents in the country: thus, a significant portion of the income produce belongs to non- residents. A similar issue applies to Ireland: Ireland hosts multiple multinational firms whose profits belong to non- residents.
In answering this question, you could also refer to differences in the price level and consumption per capita.
(b) Imagine that the government decides to increase
unemployment benefits. How would this change both government expenditures and consumption? Explain your answer.
Answer:
Unemployment benefits do not affect government expenditures. Unemployment benefits are not paid in exchange for goods and services. They are a transfer. But unemployment benefits might increase consumption as they are a transfer to those that have recently lost their jobs.
(70 marks)
(30 marks)
2 In 2003, the economists John T Addison and Paulino Teixeira (100 marks)
surveyed the early empirical literature studying the effects of employment protection on employment (Addison, John T. and Paulino Teixeira, “The Economics of Employment Protection,” Journal of Labor Research, 2003, 24 (1), 85– 128.). Most of the studies they surveyed pointed to a negative relation between employment protection and employment. And some studies pointed to a particularly negative relation between employment protection and youth employment. Discuss these results in light of the effects of employment protection on the job separation and job finding probabilities.
Answer:
Employment protection makes it costly for firms to fire the workers. As a result, job separations tend to fall. At the same time, when deciding to hire new workers, firms internalize the potential costs of a mismatch with a worker and how costly it would be to fire that worker. As a result, if employment protection increases, firms would likely open less vacancies leading to a drop in the ability of workers to find new jobs. This simultaneous drop in job separation and job finding probabilities has opposing effects in employment: lower job separation tens to increase employment while lower job finding tends to decrease employment. The survey by Addison and Teixeira suggests that the latter effect dominates the former one when employment protection increases. This view is particularly consistent with the negative relation between employment protection and youth employment. Youth workers tend to be the outsiders: those that are looking for jobs. On the contrary, older workers tend to be the insiders: those already with a job. Given the drop in job separation, it is likely that older workers (insiders) can retain their jobs but it is unlikely for younger workers (outsiders) to find jobs, leading to even lower youth employment.
Section B – use a Section B answer book
Answer TWO questions
3 (a) Assume that both government transfers and taxes increase
in the same amount and simultaneously there is a rise in consumers’ confidence. Using the Keynesian Cross model, comment on the combined effect of all these disturbances on output.
Answer:
In the Keynesian Cross model, a rise in government transfers leads to more consumers’ disposable income which, ceteris paribus, leads to more consumption. On the contrary, a rise in taxes reduces consumers’ disposable income, which, ceteris paribus, leads to less consumption. They are the opposite of one another as both affect disposable income (recall that T = taxes – government transfers). Thus, if one increases and the other falls in the same amount, T is unchanged, and these two shocks do not affect the economy.
We are left with the increase in consumers’ confidence. This increases autonomous expenditures, which leads to more planned expenditure and, thus, more output in the Keynesian Cross.
It would be important for you to add a diagram showing a shift upwards in the Desired demand (Z) line.
(b) Using the IS-TR model, contrast the effect on output of an
increase in taxes when the economy is and is not on the zero lower bound.
Answer:
This question asks you to contrast the effects of contractionary fiscal policy in two different contexts: zero lower bound and ‘normal’ conditions.
The zero lower bound applies when nominal interest rates are already at or close to zero. As agents would not accept an interest rate below zero, the interest rate cannot fall further, and the Taylor rule is bounded. Thus, the TR curve is in fact horizontal in this case (at least for a certain range of output). On the contrary, in ‘normal’ conditions, the TR curve is upward sloping.
The best way for you to show the consequences of the contractionary fiscal policy would be to plot the two TR curves (one upward sloping and another horizontal close to i=0). Then you plot two parallel IS curves, in which IS2 (after the contractionary fiscal policy) is to the left of the initial IS curve. Then you contrast the intersections with the TR curves. You should see that the fall in output is higher when the TR curve is horizontal. Intuitively, this follows from the lack of crowding-out when the TR curve is horizontal. This crowding-out is beneficial when there is a shift to the left in the IS curve because the fall in the interest rate reduces the total fall in output. That, however, does not occur when the TR curve is horizontal.
(50 marks)
(50 marks)
4 The OECD reported a drop in the average business confidence index in OECD countries in 2018. Using appropriate diagrams, answer the following questions.
(a) Would the drop in business confidence have different
effects on output in the context of the IS-LM and AD-AS models in the short run?
Answer:
Yes, it would have. In both cases, a reduction in business confidence leads to less investment. This corresponds to a shift to the left in the IS curve, implying a shift to the left in the AD curve. In the IS-LM, the fall in output is cushioned by the fall in the interest rate. But in the AD-AS model, the fall in output is cushioned by both the fall in the interest rate and the subsequent fall in prices as firms react to lower demand by reducing prices. Thus, the fall in output is higher in the IS-LM than in the AD-AS model as the former assumes prices to be fixed.
You would have to complement your analysis with two diagrams, which should show how different is the reaction of output to the shock in the two models.
(b) Would the drop in business confidence have different
effects on output in the short run and long run? In
answering this question, use the AD-AS model.
Answer:
Under classical assumptions, the fall in business confidence has no effect on potential (natural) output. Thus, in the long- run, output will revert to potential as firms start reacting to lower marginal costs by gradually reducing prices. As firms reduce prices and there is deflation, aggregate demand increases (there is a movement along the AD curve) until output reaches potential.
Again, you would have to use at least one diagram to complement your answer.
(60 marks)
(40 marks)
5 In the context of Solow model, contrast the effects of higher productivity and higher saving rate on output per worker.
Answer:
Both shocks increase output per worker in the Solow model. Yet,
the mechanisms are very different.
In the case of productivity, more output can be produced with the
same inputs. This increases the return to capital, leading to a
further increase in capital per worker and output per worker.
In the case of a higher saving rate, the share of income that is
used for investment increases. This leads to more capital per
worker and output per worker.
But a key difference between the two is that productivity rises are
theoretically unbounded, whereas the saving rate is bounded
between 0 and 100%. Therefore, only productivity gains can give
rise to sustained increases in output per worker in the model.
Furthermore, an increase in the saving rate might also lower
consumption per capita, which is not the case when productivity
rises.
All these points should be complemented with two (or more)
diagrams.
2022-04-09