If women's wages were higher, Hartmann concludes that nearly all families with women earners would have a higher standard of living. She attributes the lower average earnings of women not to their preferences for low wage work, but because of the degree of sex segregation. Labor market discrimination leads to lower earnings for women, meaning women cannot pay for child care, which takes them away from their jobs to commit to their children, a commitment that in turn contributes to discrimination against them in the workplace. Hartmann recognizes the gender wage gap across all racial and ethnic groups. According to a 2013 report, women of all racial and ethnic groups earn less than men of the same group, and also earn less than white men. Hispanic workers have lower median weekly earnings than white, black and Asian workers, the lowest of any race/ethnic group reported on. Asian workers have the highest median weekly earnings—primarily because of higher rates of educational attainment for both males and females. This concept, created by Hartmann, is grounded in her belief that equal pay for jobs of equal value. "The general goal of a comparable worth strategy is pay equity—equitable occupational wage rates that are not influenced by the sex, race, or ethnicity of the incumbents." ("Comparable Worth", 4). She emphasized a certain type of wage discrimination that arises when a firm is substantially segregated by sex and the two groups are not performing the same sort of tasks, but tasks that are of "comparable worth" to the employer (Women, Work, and Wages 9). Hartmann's exploration of comparable worth forced her to not only look into the issue of wage gaps between men and women but also the significance of gender bias/sex segregation in employment. She defines sex segregation in the workplace as the concentration of men and women in different jobs that are predominantly of a single sex. Hartmann works towards a goal of complete integration, with different proportions of men and women within every occupation identical to their representation in the labor force as a whole. She points out, however, that due to differences between men and women deeply rooted in certain cultures, this goal may take decades to reach. Therefore, an appropriate policy goal would be to eliminate barriers in the way of women's full exercise of employment rights. According to Hartmann, patriarchy is defined as "controlling women's access to resources and their sexuality, which in turn, allows men to control women's labor power, both for the purpose of serving men in many personal and sexual ways and for the purpose of rearing children". Before capitalism, a patriarchal system was established in which men controlled the labor of women and children in the family, and that through this they learned the techniques of hierarchal control.