There is another way in which the general opinion, that women are inferior to men, is manifested, that bears with tremendous effect on the laboring class, and indeed on almost all who are obligate to earn a subsistence, whether it be by mental or physical exertion -- I allude to the disproportionate value set on the time and labor of men and of women. A man who is engaged in teaching, can always, I believe, command a higher price for tuition than a woman -- even when he teaches the same branches, and is not in any respect superior to the woman. this I know is the case in boarding and other schools with which I have been acquainted, and it is so in every occupation in which the sexes engage indiscriminately. As for example, in tailoring, a man has twice, or three times as much for making a waistcoat or pantaloons as a woman, although the work done by each may be equally good. In those employments which are peculiar to women, their time is estimated at only half the value of that of men. A woman who goes out to wash, works as hard in proportion as a wood sawyer, or a coal heaver, but she is not generally able to make more than half as much by a day's work. The low remuneration which women receive for their work, has claimed the attention of a few philanthropists, and I hope it will continue to do so until some remedy is applied for this enormous evil.
Sarah M Grimke, Letter VIII: On the Condition of Women in the United States, 1837