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Household Labour Force Survey: September 2013 quarter
Embargoed until 10:45am  –  06 November 2013
Revisions

Permanent prior adjustment

The following revisions have resulted from a permanent prior adjustment made to the March 2008 and December 2012 quarters. See the data quality section for more information.

Series March 2008 quarter December 2012 quarter

Previously published
(000)

Revised
(000)
Previously published
(000)
Revised
(000)
Male employed 1,159   1,168  1,170  1,181 
Female employed 1,001   1,023  1,026  1,050 
Male not in labour force 406 397 459 448
Female not in labour force 668 651 688 667
Employed full-time 1,671   1,699   1,710   1,721  
Employed part-time 487 494 487 505
Total actual hours worked 72,342      73,846      73,393     74,698      

Each quarter, the seasonal adjustment process is applied to the latest quarter and all previous quarters. This means that seasonally adjusted estimates for previous quarters may change slightly. The revisions below reflect the changes from implementing a prior adjustment to the March 2008 and December 2012 quarters. The following table lists the changes in estimates between the current and previous quarters for the seasonally adjusted data. For example, the seasonally adjusted number of males not in the labour force in the June 2013 quarter was 451,000. In the September 2013 quarter release, that estimate is revised to 450,000. These numbers are rounded to the nearest 1,000, but the relative change derived from the unrounded estimates is a downward revision of 0.20 percent.

Percent revision from last estimate, seasonally adjusted
Quarter Male employed Female employed Male unemployed Female unemployed Male not in labour force Female not in labour force
Sep 2012 -0.05 -0.06 -1.11 -0.46 0.21 0.09
Dec 2012  0.00 0.00  0.05 0.08 0.00 0.00
Mar 2013 0.00 -0.02  0.61 0.32 -0.04 0.02
Sep 2013  0.06 0.09  0.55  0.08   -0.20    -0.13  

The following table presents revisions for the trend estimates. Trend revisions are generally larger than those of the seasonally adjusted data.

Percent revision from last estimate, trend
Quarter Male employed Female employed Male unemployed Female unemployed Male not in labour force Female not in labour force
Sep 2012  -0.01 -0.01  -0.78 -0.25 0.07 0.02
Dec 2012 -0.02 -0.04 -0.37 -0.01 0.07 0.05
Mar 2013  -0.04 -0.07  -0.40 0.35 0.22 0.08
Sep 2013  0.19 0.35 1.68 -0.03 -0.87 -0.42

Every estimate is subject to revision each quarter as new data is added, although in practice estimates more than two years from the end-point will change little. For example, the trend estimate of males employed for the September 2012 quarter was 1,172,000 for that time period. In the September 2013 quarter, one year later, the trend estimate of males employed for the September 2012 quarter is 1,175,000, a increase of 3,000 (or up 0.27 percent using the unrounded estimates). This is an example of a '4-step ahead' revision.

The table below shows the average of all such absolute revisions, expressed relatively, and gives some indication to what extent the current estimates might be revised when the December 2013 data becomes available.

Mean absolute percent revisions
Seasonally adjusted Trend
1-step 4-step 1-step 4-step
Male employed 0.05 0.08 0.16 0.17
Female employed 0.06 0.10 0.24 0.25
Male unemployed 0.48 0.73 1.71 1.71
Female unemployed 0.52 0.94 1.86 1.87
Male not in labour force 0.09 0.16 0.34 0.35
Female not in labour force 0.08 0.14 0.33 0.36

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