It is not Ryanair's responsibility to give out career advice to children
While technically true, and while the gender pay gap in general - so long as legal requirements are being met - is also not employer's responsibility, as corporations it is very much in our own best interest.
The field in which I work is a veritable sausage fest; the super-division in which I myself am employed as a middle manager consists of only 7% women at present with only 6 of us being in managerial roles out of >1000 employees. We fight tooth and nail to improve this stat - and while I'd like to think this is because our senior business strategy makers are incredibly socially aware it's actually because we can't afford not to from a business point of view.
We operate in a very comoetitive environment and we simply can't afford to leave some 50% of all potential talent untapped. If we do, we lower the overall quality of our employees because we'll have to hire less talented but obtainable men instead of more talented but elusive women. What we actually want is to hire the very best people of either sex (or racial background, or socioeconomic status ... you get the drift).
However, studies show that minorities start to feel represented in a group only when they make up about 30% of the total group. Until we get there, our women, in this case, are going to feel underrepresented and marginalised - and that's bad for attrition as well as for us getting the very best we can out of our people.
And therefore we invest heavily in our women reaching critical mass. This can and does include encouraging children, i.e. tomorrow's potential employees, to enter the field in the first place. It also includes screening a lot more candidates for any given job in order to ensure that we can and do consider female applicants without lowering our standards and hiring any woman brave enough to apply.
It costs a lot. But as per our calculations, the opportunity cost incurred by not doing it is a lot higher still. Diversity, for us, simply has an extremely good business case.
And that, in a nutshell, is why self-interested corporations absolutely should care about the gender pay gap and the gendered nature of specific roles in their workforce.