Recently I've visited a couple of European factories where precision instruments are made. A lot of this work is done by hand, and in both cases, all of the people on the factory floor are women. In the larger of the two factories, there are over two hundred people on the production lines, and not a single man among them.
As far as I can tell, this was also quite common in electronics back in the 70s and 80s, before automation took over. There would be hundreds of people in a big room populating circuit boards and soldering, and very often they would all be women.
When I've asked about this, I've repeatedly been told that it's because women have better fine motor skills than men. Sometimes also that women have more patience with this sort of highly skilled but repetitive work.
This may be true up to a point, but it surely isn't the full story, and of course the managers who tell me this have been male.
I suspect it's largely a post hoc justification for perpetuating a historical situation. Isn't the main reason these workforces are all-female really just that they always have been? Maybe it's even a legacy of wartime, when men went to the front and women worked in the factories?
Not really sure what point I'm trying to make here, I just found it interesting. Has anyone done research into this?