Women did not have a chance to enter the labor market in large numbers until the Great Depression and World War II broke out in the first half of the 20th century.
直到二十世紀前期，美國經濟大恐慌，其後爆發第二次世界大戰，女人開始有機會大量進入勞動市場，一方面養家活口，另一方面還是要做家事、帶小孩，這種內外兼挑的情況持續到戰爭結束。