As the many mothers who have left their jobs to cope with pandemic remote schooling can testify, "free" household labor isn't really free. It always entails the opportunity cost of what you could otherwise be doing.
But women's domestic tasks get short shrift in the history of labor-saving technology because historically much of that work received no direct monetary compensation.
March is Women's History Month, a good time to remember that the history of women's work sheds light on broader questions raised by labor-saving technologies, past and present. Viewed through the lens of women's experiences, inventions often derided as job-killers look like "Engines of Liberation," the title of an influential 2005 article by economists Jeremy Greenwood, Ananth Seshadri and Mehmet Yorukoglu.
By making women more productive and opening new demands for their services, labor-saving technologies gave them greater control over their time, more freedom to choose their occupations and the earning power to shape their own lives — all while propelling economic changes that boosted the overall standard of living.
Consider a few examples:
The water-powered grist mill
This technology for grinding grain spread through Europe in the Middle Ages, revolutionizing how women spent their time.
To digest cereal grains like wheat, humans first have to remove husks and turn grain into flour. That means many hours of pounding and grinding.
Grist mills opened up women's time for other tasks, most prominently spinning. Less arduous than grinding grain, it was no less time-consuming. A Medieval woman using a spinning wheel would have spent about 110 hours spinning enough wool for one pair of trousers.