Margaret Marini states the differences between men and women are natural for biological reasons but there are some stereotypical differences based on social roles and status.  She believes that the role of breadwinner has always been the male's responsibility and therefore female breadwinner or working women are considered masculine, unfit or inappropriate.  While these stereotypes are changing, it is still prevalent in the society.

Marini, Margaret M. “Sex and Gender: What Do We Know?” Sociological Forum 5.1 (1990): 95-120.