Since women are more likely to work fewer hours than men, they have less experience, which will cause women to be behind in the work force. Another explanation of such gender pay gap is the distribution of housework. Couples who raise a child tend to designate the mother to do the larger share of housework and takes on the main responsibility of child care, and as a result women tend to have less time available for wage-earning. This reinforces the pay gap between male and female in the labor market, and now people are trapped in this self-reinforcing cycle. Another social factor, which is related to the aforementioned one, is the socialization of individuals to adopt specific gender roles. Job choices influenced by socialization are often slotted in to "demand-side" decisions in frameworks of wage discrimination, rather than a result of extant labor market discrimination influencing job choice. Men that are in non-traditional job roles or jobs that are primarily seen as a women-focused jobs, such as nursing, have high enough job satisfaction that motivates the men to continue in these job fields despite criticism they may receive. According to a 1998 study, in the eyes of some employees, women in middle management are perceived to lack the courage, leadership, and drive that male managers appear to have, despite female middle managers achieving results on par with their male counterparts in terms of successful projects and achieving results for their employing companies. These perceptions, along with the factors previously described in the article, contribute to the difficulty of women to ascend to the executive ranks when compared to men in similar positions. Societal ideas of gender roles stem somewhat from media influences. Media portrays ideals of gender-specific roles off of which gender stereotypes are built. These stereotypes then translate to what types of work men and women can or should do. In this way, gender plays a mediating role in work discrimination, and women find themselves in positions that do not allow for the same advancements as males. Some research suggests that women are more likely to volunteer for tasks that are less likely to help earn promotions,and that they are more likely to be asked to volunteer and more likely to say yes to such requests. The gender pay gap can be a problem from a public policy perspective because it reduces economic output and means that women are more likely to be dependent upon welfare payments, especially in old age. A 2009 report for the Australian Department of Families, Housing, Community Services and Indigenous Affairs argued that in addition to fairness and equity there are also strong economic imperatives for addressing the gender wage gap.