[Taf]

There's a lot of difference between low physical-effort employment in warm and comfortable offices, or light cleaning jobs, and physically demanding roles in other (often harsher) conditions.

And that is why you will (often) find higher percentages of women in the former, and men in the latter.

Parity of pay in the former should be automatic, but not in the latter if you are not physically able to complete exactly the same tasks in the same time. But not all men and women are created equal, so there will be circumstances where your gender alone will not make you the best choice for the job.