Regarding teachers, it was officially a requirement that married women stop teaching (and other civil service roles) to provide these jobs for men - particularly relevant post-war & during recessions.
There were always exceptions, as PP said, during the war, for example, and locally, based on need.
It was known as the Marriage Bar; it persisted in Ireland until 1973; for many parts of the Civil Service in the UK, it was abolished immediately post WW2 but existed in the Foreign Service till the 70s.
However, despite all that, all women in my family worked - my mother's side of the family has always been highly educated (university level) and several generations back, all the women continued to work, as teachers. My great-grandparents founded a school, as did several others (there was no state funding for either primary or secondary education for a considerable period, free secondary education didn't come into existence till 1960s). Several great aunts, and older, didn't marry. My own DGM was extremely bright & one of the earliest female graduates in German, in Ireland, in the 1930s. She stopped working when she married but was convinced to return about a decade later as they had no teachers with her subjects - she asked who would mind her children, and the nuns said 'we'll find someone' and did (Ireland, again).
On my father's side, they were rural, farmers. Equally strong on education, with a history of sending both girls & boys away to the UK to be educated. The women worked on the farm, but ran their own businesses, as was common - usually hens (eggs) or rearing turkeys. This was their own money to have & was precious to them.
When I was growing up, in the late 70s / 80s, most mothers didn't work; but it was completely normal to me, as all my aunts did, in addition to my mother. I think it was quite tough though - my mother never took time off school for us, even when quite little, if we were sick, she tucked us up in bed & left us! (We were perfectly happy). She didn't ever make it to eg piano recitals or exams during her school day & I really missed that - of course I now turn myself inside out, as a single working parent, trying to be at everything mine do.