1. Methodology background
National Statistic | |
Survey name | Workforce Jobs QMI |
Frequency | Quarterly |
How compiled | Sample based surveys |
Geographic coverage | UK |
Sample size | 83,400 |
Last revised | 5 March 2013 |
2. Overview
- measures the number of jobs in the UK
- sample size of 83,400 (short term employer surveys (STES) 32,800 businesses, the quarterly public sector employment survey (QPSES) 1,500 contributors and the labour force survey (LFS) 50,000 households)
- estimates are seasonally adjusted
- time series data are available from 1959
Workforce jobs is a quarterly measure of jobs in the UK, and is the preferred measure of short term employment change by industry. A variety of outputs are produced, including industry, region, gender and full or part time status.
The number of jobs measured are the sum of employee jobs, self-employment jobs, government supported trainees and Her Majesty’s Forces.
The estimates are compiled from a number of sources, including Short Term Employer Surveys (STES), the Quarterly Public Sector Employment Survey (QPSES) and the Labour Force Survey (LFS).
Workforce jobs estimates are published in the Labour Market statistical bulletin.
The data are used across government to facilitate policy making, business and academia, with the main users being HM Treasury (HMT), the Bank of England, the Department for Education and Eurostat.
Back to table of contents3. Executive summary
A fundamental redevelopment of WFJ sources, classifications, methods and systems was undertaken in 2010. An article explaining the redevelopment in full was published as part of the September 2010 Economic and Labour Market Review (ELMR).
Workforce jobs estimates are published in the Labour market statistical bulletin. This report contains the following sections:
- Output quality
- About the output
- How the output is created
- Validation and quality assurance
- Concepts and definitions
- Other information, relating to quality trade-offs and user needs
- Sources for further information or advice
4. Output quality
This report provides a range of information that describes the quality of the output and details any points that should be noted when using the output.
We have developed Guidelines for Measuring Statistical Quality; these are based upon the five European Statistical System (ESS) quality dimensions. This report addresses the quality dimensions and important quality characteristics, which are:
- relevance
- timeliness and punctuality
- comparability
- coherence
- accuracy
- output quality trade-offs
- assessment of user needs and perceptions
- accessibility and clarity
More information is provided about these quality dimensions in the following sections.
Back to table of contents5. About the output
Relevance
(The degree to which the statistical outputs meet users’ needs.)
Table 1 contains summary information about Workforce jobs (WFJ) and its three main sources, namely:
- Short-Term Employer Surveys (STES), which measures private sector employee jobs (EJ)
- Quarterly Public Sector Employment Survey (QPSES), which measures public sector EJ
- Labour Force Survey (LFS) from which series for self-employment jobs (SEJ) are obtained
Further detail on these and other WFJ sources is available in this report. Separate Quality and Methodology Information (QMI) reports for public sector employment and LFS are also available.
Table 1: Workforce jobs estimates and its main sources
What it measures | The number of jobs in the United Kingdom. |
---|---|
Frequency | Estimates of WFJ are produced on a quarterly basis. |
Sample size | Approximate number of respondents per quarter: |
· STES –: 32,800 businesses, | |
· QPSES –: 1,500 contributors, | |
· LFS: – 50,000 households. | |
Periods available | Time series are available back to 1959. |
Sample frame | STES and, QPSES: Inter-Departmental Business Register (IDBR). LFS: Postcode Address File and NHS communal accommodation. |
Sample design | STES: Stratified random sampling by industry and employment, with 100% coverage of businesses with register employment above a threshold which that varies by industry. |
QPSES: Census. | |
LFS: Stratified random sample of addresses where all people aged 16 and over+ are interviewed. Each quarter’s sample is made up of five waves. Respondents are interviewed for five successive waves at three3-monthly intervals. | |
Approximately 20% of the sample is replaced every quarter. | |
Weighting and estimation | STES: In strata without 100% coverage, by calibration to register employment totals (industry sector by region). Each business represents a number of similar businesses, based on the number of employees and the UK Standard Industrial Classification 2007 (SIC 2007). |
QPSES: No weighting required. | |
LFS: Calibration weighting is used. The weights are formed using a population weighting procedure, which involves weighting data to sub- regional population estimates and then adjusting for the estimated age and sex composition by region. | |
Imputation | STES and, QPSES: Estimates for non-response are made using standard imputation techniques employed by ONS business surveys. |
LFS: Roll-forward (for one wave only). | |
Outliers | STES: Outliers are detected via automated and manual processes and are treated by adjusting their estimation weights. |
QPSES and, LFS: No filtering of outliers. | |
Seasonal adjustment | The series are seasonally adjusted in X12 ARIMA. |
Source:Office for National Statistics |