Shouldn't he know this?

I think the answer is probably yes, we can conclude that Danny Dorling is an idiot. Which is a pity, given that he’s Professor of Human Geography at Oxford these days. Pity to have a fool in a position so eminent.

For he ask us something about the gender pay gap in a letter to The Guardian:

Anne Davey and Kathy Winrow of the Oxford Diocesan School Trust (ODST) claim that their trusts “have a gender pay gap because we offer employment that is part-time and term-time only” (Letters, 29 March). But gender pay gaps are calculated according to hourly rates, not annual pay. So is the ODST paying a lower hourly rate to people who work part time as compared with full time and/or those who work term time only as opposed to all year round, but who otherwise do a very similar job? If that is not the reason for the ODST’s gender pay gap, what is?

The results for thousand of schools and other employers are now available at gender-pay-gap.service.gov.uk and vary dramatically from one another. Those with greater pay gaps should be asked to provide a convincing explanation.
Danny Dorling
Oxford

The idiocy here being that it’s entirely well known that people working part time tend – tend mind, on average – to get paid less per hour than those working full time. As the basic and standard numbers upon pay, the ASHE survey from ONS, tell us each and every year.

Come along now, anyone trying to make anything other than a just “it’s unfair” comment about the gender pay gap really must know this. Especially a Professor at Oxford whose own field of study comfortably nudges up against this very point.

Many more women work part time than do men. A much larger portion of those working part time are women than men. Part timers do indeed make less per hour than full timers. And the mixture of those things is indeed a good explanation for a goodly part of the observed gender pay gap. About half of it in fact. The fully blended, part timers and full timers, gender pay gap is recorded as being some 18 and a bit percent at present. The full time pay gap, comparing only full timers to full timers, is 9.6%. Given that the part time pay gap itself, between men and women working part time, is in favour of women by about 5% or so, yes, this does mean that a goodly half of the measured gender pay gap is down to exactly what Professor Dorling seems ignorant of.

Ho hum, eh?