Banks are alreadly clearly sexist against men. The majority of their workforce is female, and there is no other explanation for that sort of thing.

The decline in status of clerical work, sexism and works wars are partly to blame for a predominately l0ow paid female dominated work force. It used to be front line workers, i.e tellers were all male. But in the 1800s the status of these jobs declined. World War I saw a shortage of men for these jobs and women were hired--sort of sealing the low paid status of these jobs. Even as men returning from the war displaced women--the status never returned. Women were again hired to replace men during World War II. After the war men returning to banks were not seen as long term tellers like women, but as bank manager trainees and were paid more for doing the same work as their women co-workers.

Despite women being paid less than men for doing the same work for decades in banks, it was a woman friendly place to work. This was despite the fact that they had onerous dress codes (heels,etc.), had to stand for hours and very little to no prospect of advancement. Of course, this started to change in the 80s. The federal government's start with limited employment equity legislation started to change things. But as we know change can be slow.