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Frequently asked questions about productivity – Data coverage
bullet icon. Back to frequently asked questions about productivity 

Do the numbers reflect the whole economy?

No. The productivity numbers produced by Statistics NZ are for the measured sector, which represents 25 of New Zealand’s industries. Table 3 summarises the industries that are covered and excluded from the current measured sector.

Table 3

Productivity industry coverage(1)

Measured sector industries Omitted industries  
AA1 Agriculture LL2 Owner-occupied property operation
AA4 Forestry and fishing, and services to agriculture, forestry, and fishing  OO1 Local government administration 
 BB1 Mining OO2 Central government administration, defence and public safety
CC1 Food, beverage, and tobacco manufacturing PP1 Education and training
CC2 Textile, leather, clothing, and footwear manufacturing QQ1 Health care and social assistance
CC3 Wood and paper products manufacturing  
CC4 Printing
CC5 Petroleum, chemical, polymer, and rubber products manufacturing
CC6 Non-metallic mineral products manufacturing
CC7 Metal products manufacturing
CC8 Transport equipment, machinery and equipment manufacturing
CC9 Furniture and other manufacturing
DD1 Electricity, gas, water, and waste services
EE1 Construction
FF1 Wholesale trade
GH1 Retail trade
GH2 Accommodation and food services 
II1 Transport, postal, and warehousing
JJ1 Information media and telecommunications
KK1 Financial and insurance services
LL1 Rental, hiring, and real estate  services(2)
MN1 Professional, scientific, and technical services(2)
MN2 Administrative and support services(2)
RS1 Arts and recreation services

RS2 Other services(2)

1. Based on the Australian and New Zealand Standard Industrial Classification 2006 (ANZSIC06).
2. Included in the measured sector from March 1996 onwards, not included in the former measured sector.

Why can't I find a productivity measure for the total economy?

The outputs of general government, non-profit institutions, and paid employees of private households are assumed to be based on the incomes of input factors (known as the ‘output=input’ approach). This approach leads to negligible productivity change because the growth in output will be identical, or similar to, the growth in input. The 'output=input' approach does not result in a true measure of productivity. For more information on measuring government productivity, see Measuring government sector productivity in New Zealand: A feasibility study, which was released by Statistics NZ in March 2010. Statistics NZ also excludes the value of owner-occupied dwellings because this sector lacks a measure of labour input.

The Organisation for Economic Co-operation and Development (OECD) however, does produce a total economy measure for New Zealand.

Why are the education and health industries not included in the measured sector?

Although new methods for measuring value added in the education and health industries are independent of inputs, these industries are not included in the measured sector to retain focus on industries which are based on market-sector activity. Also, excluding these industries means we can still compare the New Zealand measured sector with the Australian Bureau of Statistics MFP16 series.

Why do you have only annual data?

The main reason is that capital input data is only available on an annual basis, and this is not expected to change.

The output data and labour input data are both available on a quarterly basis. However, Statistics NZ does not intend to publish a quarterly labour productivity measure because there is currently no demand for it. Productivity is best analysed over longer timeframes (such as cycles), and there may be substantial revisions to quarterly figures.

Why is the annual data based on a March year, rather than a December year?

This is consistent with the annual National Accounts. Both the output measure and capital input measure are based on a March year, so that is the only option for the productivity estimates.

Are industry productivity measures available for separate regions and cities in New Zealand?

No. Productivity measures are only available at the national level. The data sources used to calculate productivity do not provide the information Statistics NZ would need to construct regional measures.

Why do you revise your data?

The productivity estimates draw on data from a range of sources. For the output measure, GDP data is used. The labour input series uses Linked Employer-Employee Data (LEED) and HLFS data, among other labour surveys. Revisions to any of these data may affect productivity estimates.

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