Nadine O’Regan: You can’t ask for someone’s age in a job interview, so why do it to people we admire and for whom it may cause harm?

As the years accumulate, the prospect of becoming invisible to the opposite sex and being discriminated against in the workplace increases. Is it any wonder that women are reluctant to reveal their age?

Jamie-Lee O’Donnell, the Derry Girls actor who plays Michelle Mallon, left, in the series, was obviously uncomfortable when asked about her age on The Late Late Show

Back in the 2010s, I spent some time working alongside a woman who was a presenter and a model. She was in demand for both of her chosen professions – a great success – and a very nice person as well: a rare woman who men fancied and women liked, despite her good looks.

One thing I couldn’t fathom about her, though, was this: she told everyone her age. To me, it was crazy. A ...