Skinny, Single Girls Are Always Less Productive

A reader points us to an excerpt from the July 1943 issue of Transportation magazine: Tips on "getting more efficiency" out of female employees, who were being hired in droves due to the manpower shortage during World War II. Some of the gems include:

[Young married women] usually have more of a sense of responsibility than their unmarried sisters, they are less likely to be flirtatious.
And!
When you have to use older women, try to get ones who have worked outside the home at some time in their lives. Older women who have never contacted the public have a hard time adapting themselves and are inclined to be cantankerous and fussy.

And this!

Experience indicates that 'husky' girls - those who are just a little on the heavy side - are more even tempered and efficient than their underweight sisters!

And this is a real classic:
Give every girl an adequate number of rest periods during the day. You have to make some allowances for feminine psychology. A girl has more confidence and is more efficient if she can keep her hair tidied, apply fresh lipstick and wash her hands several times a day.
The funny thing is, you can totally substitute "men" for "women" in some of these! ("Whenever possible, let the inside employee change from one job to another at some time during the day. Men are inclined to be less nervous and happier with change.") Uh, except for for the fresh lipstick and hand-washing one.

1943 Guide to Hiring Women [Richard Harter's World]