Of course it could be that there is much less discrepency in pay than some would like to make out:
http://www.bbc.co.uk/blogs/thereporters/markeaston/2009/06/womens_minister_used_misleadin.html
Comparing men and women who work full-time, the gender pay gap is 12.8%, the ONS preferred measure.
Looking at part-time workers, women actually do better than men: their hourly rate is 3.4% higher than their male counterparts.
But when you add the two together, because part-timers get paid less than full-timers and because there are nearly four times as many part-time female workers as there are male, the gap appears to jump to 22.6%, which the GEO rounds up to 23%.
In other words, because women have more opportunity to work part time, and often do even if they have good well paid jobs, that means that the average for full time women’s jobs comes down – and the average for part time women’s jobs goes up. So it becomes pretty much self-perpetuating.
Of course, Harriet Harman wouldn’t be deliberately misleading, would she?
If one accepts my ONS source’s version of events, this was not a professional difference of opinion between two statistical experts. Harriet Harman’s officials preferred their in-house interpretation of the data to the independent and professional one because, one might assume, it made the case for their controversial Equalities Bill look a little stronger.
Attached to the letter from Sir Michael Scholar are the notes from the Monitoring and Assessment team at the authority which investigated the case. This suggests that it is not just the GEO which may occasionally get political with the numbers.
The Equalities and Human Rights Commission refers to a gender pay gap of 35.6% for women working part-time. It comes to this conclusion by comparing the mean hourly earnings of female part-time workers with those of male full-time workers.
Oh, turns out she would. Who knew?