Labour Force Survey (LFS) Reweighting Project 2007:
In 2007, the Office for National Statistics (ONS) undertook a reweighting project, whereby LFS data were reweighted using population estimates for 2007-2008. As a result, reweighted editions of LFS five-quarter longitudinal datasets back to 1997 were deposited at UKDA during 2008 (the 1992-1997 datasets will be updated at a later date). Users should note the following:

• the single year of age variable (AGE) has been reinstated in the reweighted datasets
• only calendar datasets have been reweighted to 2007-2008 figures. The previous seasonal datasets are no longer updated or supported by ONS. Seasonal datasets from 1997 onwards have been withdrawn from the UKDA catalogue accordingly

The next LFS/APS reweighting exercise to be undertaken will use 2009 population figures, and it is planned that revised datasets will be deposited accordingly during 2010.