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Factfile - Economy

Regional Accounts 2003

5. Multiplier Analysis 

5.1 Introduction 

5.1.1 This chapter begins by reporting the values of various multipliers which can be produced from simple manipulation of the SAM reported in the previous chapter. Essentially, these multipliers measure how the Western Isles economy would behave in response to external “impacts” according to the most straightforward assumptions, e.g. unchanged “technology” (cost structures), no supply-side constraints, and constant household consumption patterns.

 

5.1.2 Four different types of multipliers are presented:

§ Open IO or Type 1 output multipliers, which measure the effect of a change in final demand (e.g. an increase in export demand) for one sector on the output of the whole economy; taking into account the inter-sectoral purchases of input goods and services.

§ SAM output multipliers, which in addition, take into account the distribution of income and the spending behaviour of local households as more (or less) income is available as a result of the initial injection

§ SAM household multipliers, which measure the total effect of a unit change in income of a particular household type on the incomes of all households in the economy.

§ Employment multipliers, which measure the total number of jobs created in the economy as a result of an increase of employment in one sector. In addition, employment effects are presented which measure the amount of employment generated in the whole economy as a result of a unit increase in demand for output from a particular sector.

 

5.1.3 The multiplier analysis is useful for identifying the extent to which different sectors and households have the potential to generate income and employment in the economy as a whole. The chapter concludes by considering the extent to which the economy is dependent on different types of final demand – local government demand, central government demand, Gross Fixed Capital Formation and exports.  The results of this so-called final market analysis are contrasted with those found in analysis of the 1997 SAM.

5.2 Sectoral multipliers

5.2.1 Two types of ‘output’ multipliers are shown in Table 5.1.  The first, “open IO” or basic (Type 1) multipliers show the total change in the value of output in the economy due to a unit increase in final demand for a particular sector’s output. Since only the industry accounts are treated as endogenous in this case, i.e. the behaviour of factors (such as households etc.) are treated as exogenous and independent of industrial activity levels, these multipliers include the direct and indirect effects but not induced effects.

5.2.2 The largest open output multiplier in the Western Isles economy is possessed by food and drink manufacturing and processing, at a value of 1.577. Therefore, a £1000 increase in demand for output from Western Isles food and drink manufacturers and processors is estimated to generate an additional £577 in the output of all sectors of the local economy, as the businesses within this sector increase their demand for inputs and services in the Western Isles economy. A decline of £1000 in the value of demand for food and drink products has an equally large but negative effect on the Western Isles economy.

5.2.3 The next largest multipliers are possessed by Sea Fishing (1.55), Media (1.51), Agriculture (1.41) and Fish Processing, Preserving and Wholesaling (1.40).  The same five sectors were found to have the highest IO multiplier values in the 1997 study of the region although the rank position of the sectors has changed.

5.2.4 Six sectors have open IO multipliers lower than 1.1.  These are all service sectors reflecting the fact that these sectors purchase few or no inputs. The results thus demonstrate the still important role of primary sectors in the Western Isles economy: although they may have declined in relative or absolute size, fluctuations in demand for their products (which are mainly exported to the mainland and beyond) have unusually high effects on the Isles economy. In general the multipliers are all fairly low as expected, given the open nature of the Western Isles economy.

Table 5.1 Open IO and SAM output multipliers, 2003

 

Industry

Open IO

 (Type 1)

Rank

SAM

Rank

 

1

Agriculture

1.412

4

1.494

8

 

2,3,5

Sea fishing

1.550

2

1.739

2

 

4

Fish farming

1.140

16

1.382

12

 

6

Electricity, gas, water

1.300

8

1.450

9

 

7

Extraction (of ores, crude petrol etc.)

1.256

9

1.519

6

 

8

Textiles

1.342

7

1.512

7

 

9

Pottery and jewellery

1.113

19

1.291

23

 

10

Food and drink manuf. & processing

1.577

1

1.742

1

 

11

Fish process., preserving, wholesaling

1.404

5

1.646

4

 

12

Other manufacturing

1.111

20

1.294

22

 

13

Construction

1.179

14

1.350

15

 

14

Distribution

1.128

17

1.324

16

 

15

Hotels

1.225

10

1.406

11

 

16

Other accommodation

1.211

11

1.313

18

 

17

Catering

1.026

24

1.283

24

 

18

Land transport

1.127

18

1.376

13

 

19

Air transport

1.352

6

1.577

5

 

20

Sea transport

1.170

15

1.351

14

 

21

IT services and telecommunications

1.192

13

1.432

10

 

22

Banking and Insurance

1.042

23

1.123

26

 

23

Media

1.514

3

1.708

3

 

24

Education

1.069

21

1.230

25

 

25

Health

1.059

22

1.298

19

 

27

Other public services

1.204

12

1.317

17

 

28

Other services

1.007

25

1.297

21

 

29

Public administration

1.000

26

1.298

20

 

 

5.2.5 SAM output multipliers are defined similarly to the open IO multipliers above, but in this case the factors, accounts and household groups are treated as endogenous in the system. Thus the SAM multiplier effects allow for induced feed-backs as re-spending of incomes occurs. Technically, the model solves for the structure of production, the distribution and level of income in the economy simultaneously.

5.2.6 The second column of multipliers in Table 5.1 shows the values of these SAM multipliers.  Again food and drink processing has the largest multiplier value of 1.742. In other words a £1000 increase in demand for output from the Food and Drink Processing sector is estimated to generate an additional £742 in the output of all sectors of the local economy.  In the case of the SAM model, this comes about partly as a result of increased demand for inputs and services in the Western Isles economy and partly because some of the extra wages, salaries and profits of those working in all sectors affected is spent within the region. The Food and Drink Processing sector is followed by largely the same group of sectors as in the open input output multiplier case although Agriculture slips lower down the rank position reflecting the low wages and salaries of this sector and those most closely linked to it.

5.2.7 The lowest SAM multiplier value belongs to banking and insurance at 1.123. Many of the other service sectors perform much better when SAM multipliers are considered rather than IO multipliers because the re-spending by households whose incomes come mainly from these sectors helps to generate additional output effects over and above those relating to inter-industry dependencies.

5.2.8 Table 5.2 compares the magnitude of SAM multipliers and the rank positions of sectors (as estimated from the 2003 SAM) to those found in the 1997 study.  The table indicates that the magnitude of multipliers has decreased over the period.  There are four factors which may have lead to this finding:  changes in production technology reducing dependence on local inputs and local labour; decreased reliance on local suppliers and increased use of imports and/or non-local labourers in production; changes in household preferences in terms of expenditure; and change in the source of household expenditure so that more is purchased from non local sources.

5.2.9 Although there have been changes in the rank position of sectors, these changes are in the majority of cases limited to increases or decreases of one or four places within the ranks.  The one exception indicated in Table 5.2 is that of the education sector which has fallen from 17th position in 1997 to 25th position in 2003.

Table 5.2 Changes in rank position of sectors with highest and lowest SAM multipliers

 

Industry

2003

SAM multipliers

Rank

1997

SAM multipliers

Rank

Change in rank positions

 

Top 5, 2003

 

 

10

Food and drink processing

1.742

1

1.968

3

2

2

Sea fishing

1.739

2

1.907

4

2

23

Media

1.708

3

1.786

5

2

11

Fish processing

1.646

4

1.983

2

-2

19

Air transport

1.577

5

1.517

9

4

 

Bottom 5,  2003

 

 

12

Other manufacturing

1.294

22

1.350

25

3

9

Pottery and jewellery

1.290

23

1.351

24

1

17

Catering

1.283

24

1.379

21

-3

24

Education

1.230

25

1.406

17

-8

22

Banking and Insurance

1.123

26

1.146

26

0

 

5.3 Household multipliers

5.3.1  The SAM household multipliers shown in Table 5.3 measure the total effect of a unit change in income of a particular household group (rather than change in demand for sectoral output as in the previous section) on the incomes of all households in the economy. This effect might be brought about by, for example, a change in the income tax regime, or a change in value of transfer earnings (social security payments, pensions, etc.) from outside the region. One interpretation of these multipliers is that they measure the “trickle-down” effect of changed income or wealth in one group on society in general.

5.3.2  As in the 1997 study, retired households in the Western Isles generate the largest increase in total household income. For this group, a £1000 expenditure injection (due, for example, to decreased direct taxation or increased pensions) would result in an additional £205 increase in total Western Isles household income. This £205 increase mainly accrues to households without children, and, to a lesser extent, households with children: even though neither of these household types benefit directly from the injection, they benefit through the economic activity stimulated by the injection.

5.3.3  As was the case with the output multipliers, the magnitude of the SAM household multiplier is shown to have decreased between 1997 and 2003 as a result of a combination of factors.  The most important in the case of the household multipliers will probably be changes in the consumption and sourcing patterns of households in the region.

Table 5.3 SAM household multipliers, Western Isles 2003

 

Injection to:

 

Impact on:

Adults, no dependants

Adults plus dependants

Retired

Adults, no dependants

1.088

0.090

0.118

Adults plus dependants

0.064

1.068

0.084

Retired

0.002

0.005

1.003

Total multiplier, 2003

1.154

1.163

1.205

Total multiplier, 1997

1.194

1.203

1.238

Difference

-0.040

-0.040

-0.033

  

5.4 Employment effects and employment multipliers

5.4.1   The employment effects arising from a policy change or stimulus to an economy are often considered critical.  Table 5.4 presents various measures associated with employment.  The first column of figures ‘employment coefficients’ measure the amount of employment (measured in full-time equivalents, ‘FTEs’) required per unit output of each sector. As shown, the highest value is given by public administration, with 0.092 FTE jobs required per £1000 of own “output”. This is followed by other private services and other manufacturing.

5.4.2  Perhaps more interestingly, employment effects measure the amount of employment generated in the whole economy as a result of a unit increase in demand for output from a particular sector. These exceed the values of the employment coefficients, since inter-industry links are taken into account. For example, sea fishing has an employment effect of 0.053, indicating that a £1000 increase in final demand for sea fish output leads to a total increase in Western Isles employment of 0.053 FTEs or alternatively a £1 million increase in such final demand leads to 53 additional jobs, some of which will be in the sea fish sector, others elsewhere in the economy.  Arguably, employment effects are the most useful measures from a policy perspective in assessing the potential of a sector to generate knock-on-benefits in the economy as a whole.

 

5.4.3  Employment multipliers measure the increase in total employment resulting from a unit increase in employment in one particular sector. The final columns of Table 5.4 show that the highest values, with over 2 FTE jobs generated for every one in the initial sector, are shown by other public services, fish processing, and air transport. All these sectors have quite low employment coefficients thus it follows that for a whole extra job to be created in these sectors, the boost to the economy has to be significant and strong economy-wide employment benefits follow.

Table  5.4  Employment coefficients, effects and multipliers, Western Isles 2003

 

 

Employment Coefficients*

Employment Effects**

Employment Multipliers ***

 

 

value

rank

value

rank

value

rank

1

Agriculture

0.015

20

0.025

20

1.658

7

2,3,5

Sea fishing

0.037

5

0.053

3

1.431

10

4

Fish farming

0.009

25

0.017

24

1.796

4

6

Electricity, gas, water

0.021

13

0.030

14

1.439

9

7

Extraction, ( of ore, petroleum etc)

0.031

8

0.041

8

1.309

16

8

Textiles

0.037

4

0.051

4

1.381

12

9

Pottery and jewellery

0.030

9

0.035

10

1.186

22

10

Food manuf. & proc’g

0.031

7

0.044

6

1.407

11

11

Fish proc’g, prsv’g,whol’g

0.014

21

0.031

13

2.242

2

12

Other manufacturing

0.040

3

0.046

5

1.138

24

13

Construction

0.030

10

0.037

9

1.243

19

14

Distribution

0.020

15

0.027

16

1.341

14

15

Hotels

0.021

12

0.029

15

1.343

13

16

Other accommodation

0.019

17

0.025

19

1.333

15

17

Catering

0.035

6

0.041

7

1.152

23

18

Land transport

0.012

23

0.019

23

1.639

6

19

Air transport

0.012

22

0.026

17

2.122

3

20

Sea transport

0.020

14

0.026

18

1.273

18

21

IT services and telecoms

0.015

19

0.024

21

1.550

8

22

Banking and insurance

0.010

24

0.012

26

1.205

20

23

Media

0.019

16

0.032

12

1.698

5

24

Education

0.016

18

0.021

22

1.308

17

25

Health

0.029

11

0.035

11

1.200

21

27

Other public services

0.006

26

0.014

25

2.467

1

28

Other services

0.058

2

0.063

2

1.098

25

29

Public administration

0.092

1

0.098

1

1.061

26

Notes:

*  FTEs  per £’000 output

** FTEs generated throughout whole economy in response to £’000 change in final demand for the sector’s output

** FTEs generated throughout whole economy in response to a unit increase in FTEs in the sector.

5.4.4  Again, compared with findings from the 1997 study, the magnitude of employment multiplier effects on the Western Isles economy has decreased (see Table 5.5).  While some sectors (for example food and drink manufacturing and processing) appeared to have less employment generating potential than in previous years, the rank positions of most sector has remained fairly constant. The service sectors have high employment coefficients and thus low employment multipliers.

Table 5.5 Changes in rank position of sectors with highest and lowest employment multipliers

 

Industry

2003

Employment multipliers

Rank

1997

Employment multipliers

Rank

Change in rank positions

 

Top 5, 2003

 

 

11

Fish proc'g, prsv'g,whol'g

2.242

2

3.214

1

-1

19

Air transport

2.122

3

2.833

2

-1

10

Food manuf. & proc'g

1.407

11

2.303

3

-8

27

Other public services

2.467

1

2.200

4

3

4

Fish farming

1.796

4

2.100

5

1

 

 

Bottom 5,  2003

 

 

22

Banking and insurance

1.205

20

1.231

22

2

12

Other manufacturing

1.138

24

1.167

23

-1

28

Other services

1.098

25

1.148

24

-1

17

Catering

1.152

23

1.130

25

2

29

Public administration

1.061

26

1.076

26

0

 

5.4.5  Occupation-employment effects are like the employment effects except that they indicate the type of employment resulting from a stimulus to the economy rather than simply the total number of jobs created.  The values are shown in Table 5.6. To improve presentation, rather than injections of £1000, the employment arising from a £1million increase in final demand is considered. 

 

5.4.6  The totals for each sector in Table 5.6 are shown to be equivalent to the values in the previous table. For example, reading across the top row of the table indicates that of the (almost) 25 jobs created from a £1 million increase in final demand for agricultural output, 8 would be classified as managerial (which includes farmers), 0.4 as professional, 7.3 Skilled tradesmen, and so on.

Table 5.6 Occupation-employment effects

5.5 Final market analysis

5.5.1  Economic activity within the Western Isles region is stimulated by sales of goods and services to so-called “final demand categories” and/or flows of transfer income into the region. Within the SAM model, there are five sources of final demand and income flows: local government; central government; sales which add to capital stocks (GFCF); sales to tourists and finally exports to other regions (the rest of Scotland, rest of UK and rest of world). Using standard multiplier techniques, it is possible to assess the relative importance of each of these different sources in terms of generating local economic activity.

 

5.5.2 Table 5.7 indicates the extent to which each source stimulated output, factor income and employment in the Western Isles in 2003. The totals presented in the table are consistent with those in the SAM. The results indicate the importance of export markets for the economy. Taking into account the various inter-sectoral and household linkages in the economy, the export market is responsible for generating 38% of the value of output produced in the economy, and 40% of total factor income and employment in the economy. The second most important stimuli in terms of income and employment is central government expenditure. 

5.5.3 Table 5.8 indicates the importance of different regions in providing export-related income to the Western Isles economy.  Exports to the Rest of the UK are far more important to the Western Isles economy than exports to the rest of Scotland (three times more important in terms of employment).  Exports to the rest of the world account for almost 13% for the value of output and income generated in the Western Isles is slightly more at 14% (in terms of employment): reflecting the fact that the type of products which are exported to such destinations are possibly more labour intensive.

Table 5.7   Source of Western Isles economic activity by final market, 2003

 

Output

Factor income

Employment

 

£’000

%

£’000

%

FTEs

%

Local government

110,866

21.7

43,217

16.4

1,481

14.9

Central government

148,651

29.2

82,353

31.3

2,965

29.9

GFCF plus change in stocks

16,886

3.3

8,542

3.2

431

4.4

Tourist expenditure

40,386

7.9

23,031

8.8

1,033

10.4

Exports*

193,037

37.9

105,888

40.3

3,998

40.3

Total

509,826

100.0

263,032

100.0

9,908

100.0

* Includes an element of transfer income from abroad direct to household sector. Note: Figures may not exactly add to totals due to rounding.

Table 5.8Importance of the different export markets, 2003

 

Output

Factor income

Employment

 

£’000

%

£’000

%

FTEs

%

Rest of Scotland

45,042

23.3

25,732

24.3

836

20.9

Rest of UK

123,586

64.0

67,152

63.4

2,595

64.9

Rest of World

24,409

12.6

13,005

12.3

566

14.2

Total Export-related

193,037

100.0

105,888

100.0

3,998

100.0

Note: Figures may not exactly add to totals due to rounding.

5.5.4 Importantly, Table 5.9 indicates that dependence of the economy on export markets has decreased since 1997 while dependence on central government has increased.  Central government in this analysis not only provides income to fund public sector activities but also provides transfer income to Western Isles households in the form of pensions and social security payments etc.

 

Table 5.9  Comparison of importance of different final markets:  1997 and 2003

 

%  output

% factor income

 % employment

 

1997

2003

1997

2003

1997

2003

Local government

23.2

21.7

22.1

16.4

16.9

14.9

Central government

22.0

29.2

25.8

31.3

24.3

29.9

GFCF

1.9

3.3

1.6

3.2

2.0

4.4

Tourist expenditure

7.8

7.9

8.4

8.8

11.9

10.4

Exports*

45.1

37.9

42.1

40.3

44.9

40.3

Total

100.0

100.0

100.0

100.0

100.0

100.0

Note: Figures may not exactly add to totals due to rounding.

5.5.5 Drawing on the occupation-employment effects presented earlier, it is possible to assess not only the total employment associated with each different final demand category, but also the type of employment. Such analysis, known as “embodied skills analysis”, can be used to indicate the labour market implications of either an increase or decrease in sales to markets which are liable to fluctuate in accordance with the macroeconomic environment. Table 5.10 indicates the occupational content of sales to each final demand category.

Table 5.10   Embodied skills analysis of Western Isles final demand, 2003 (FTEs)

 

5.5.6 Differences in the type of employment associated with each market are noticeable. Whilst the production of exports is responsible (directly and indirectly) for the majority of skilled trades jobs (56%), processing, plant and machine operatives (58%) and elementary occupations (56%), local and central government demand are most important in terms of generating professional, administrative and secretarial employment in the Western Isles economy. The most important contribution of Western Isles tourism in terms of employment is the generation of jobs in the personal and service occupations category.

5.5.7 Finally, Table 5.11 presents another form of final market analysis but in this case, instead of distinguishing the five different sources of final demand, splits final demand into that which might be considered traditional sources of income for the region (exports to all regions plus sales to GFCF) from those which are non-traditional (Roberts, 2003).  The latter includes income from tourist, income from local and central government (split to show the relative importance of sector-related flows and household-related flows) and finally private income to households  (from private pensions, income  associated with participation in non-local labour markets, transfers from family members living non locally etc). 

Table 5.11 Importance of ‘non-traditional’ basic income to the region, 2003

 

Output

Factor income

Employment

 

£’000

%

£’000

%

FTEs

%

Traditional income*

206629

40.5

112932

42.9

4368

44.1

Non traditional income

303197

59.5

150100

57.1

5538

55.9

Of which:

 

 

 

 

 

 

Tourism

40386

 

23031

 

1033

 

Government expenditure on WI products

232545

 

103403

 

3941

 

Government transfers to households

26972

 

22167

 

504

 

Private income to households

3294

 

1498

 

61

 

Total

509,826

 

263,032

 

9,908

 

* Includes value of exports of products plus GFCF

5.5.8 The table shows that so called non-traditional sources are more important in sustaining output, income and employment in the Western Isles than traditional sources of income to the region.  Of these non-traditional sources, government funds for public sector activities dominate, although interestingly the table also shows that government transfers direct to households in the region support 9% of jobs in the Western Isles and account for almost 15% of incomes in the region when not only direct but also indirect and induced effects are taken onto account. Private income flows from out-with the region to households are relatively unimportant.  A similar analysis of a more accessible rural region, where commuting possibilities are higher would probably find such flows are far more important in sustaining local economic activity.

 

 

 

 

 

Page Last Modified : 29/09/2011 14:04:29