Trade Union Membership Statistics: Measuring Bias in the Labour Force Survey
Analyses potential bias in Trade Union membership statistics.
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The Department for Business, Innovation & Skills (BIS) has investigated the two potential areas of bias that could affect the trade union membership statistics, identified in the annual publication. These areas are:
- the accuracy of proxy responses used in the labour force survey (LFS)
- the data on collective agreements
These areas could lead to uncertainty in the trade union membership estimates. This report explains the issues further.