Originally Posted by Martian

At the risk of upsetting a lot of women, I'll attempt to explain why guys are less often used as cashiers.

Guys tend to be (not universally true) taller and stronger, primarily in the arms and shoulders than girls, which makes them better suited to jobs that require heavy lifting and reaching, such as stocking shelves and carrying out purchases. Hence stock boys and bag boys, but fewer male cashiers. They're better employd elsewhere in the store.

I worked construction for several years and I've also spent time in a warehouse. I've never met a female construction worker and there are very few women in the warehouse I used to work at. Not saying they can't do the job, just that men tend to be better suited. It's genetics.