Marxist feminism is a branch of feminism focused on investigating and explaining the ways in which women are oppressed through systems of capitalism and private property. According to Marxist feminists, women's liberation can only be achieved through a radical restructuring of the current capitalist economy in which much of women's labor is uncompensated.
Theoretical background in Marxism
In 1884, Engels published The Origin of the Family, Private Property, and the State  According to Engels (1884), the shift from feudalism to private ownership of land has had a huge effect on the status of women. In a private ownership system, individuals who do not own land or other modes of production are in a situation that Engels (1884) compares to enslavement - they must work for the owners of the land in order to be able to live within the system of private ownership. Engels (1884) explains that the transition to this type of system resulted in the creation of separate public and private spheres and assigned access to waged labor disproportionately to men.
Engels (1884) argues that a woman's subordination is not a result of her biological disposition but of social relations, and that men's efforts to achieve their demands for control of women's labor and sexual faculties have gradually become institutionalized in the nuclear family. Through a Marxist historically materialist perspective, Engels (1884) analyzes the widespread social phenomena associated with female sexual morality, such as fixation on virginity and sexual purity, incrimination and violent punishment of women who commit adultery, and demands that women be submissive to their husbands. Ultimately, Engels traces these phenomena to the recent development of exclusive control of private property by the patriarchs of the rising slaveowner class in the ancient mode of production, and the attendant desire to ensure that their inheritance is passed only to their own offspring: chastity and fidelity are rewarded, says Engels (1884), because they guarantee exclusive access to the sexual and reproductive faculty of women possessed by men from the property-owning class.
As such, gender oppression is closely related to class oppression and the relationship between men and women in society is similar to the relations between proletariat and bourgeoisie. On this account women's subordination is a function of class oppression, maintained (like racism) because it serves the interests of capital and the ruling class; it divides men against women, privileges working class men relatively within the capitalist system in order to secure their support; and legitimates the capitalist class's refusal to pay for the domestic labor assigned, unpaid, to women.
Productive and reproductive labor
In the capitalist system, two types of labor exist, a division stressed by Marxist feminists like Margaret Benston and Peggy Morton. The first is productive, in which the labor results in goods or services that have monetary value in the capitalist system and are thus compensated by the producers in the form of a paid wage. The second form of labor is reproductive, which is associated with the private sphere and involves anything that people have to do for themselves that is not for the purposes of receiving a wage (i.e. cleaning, cooking, having children). Both forms of labor are necessary, but people have different access to these forms of labor based on certain aspects of their identity. Women are assigned to the domestic sphere where the labor is reproductive and thus uncompensated and unrecognized in a capitalist system. It is in the best interest of both public and private institutions to exploit the labor of women as an inexpensive method of supporting a work force. For the producers, this means higher profits. For the nuclear family, the power dynamic dictates that domestic work is exclusively to be completed by the woman of the household thus liberating the rest of the members from their own necessary reproductive labor. Marxist feminists argue that the exclusion of women from productive labor leads to male control in both private and public domains.
Accomplishments and activism
The nature of Marxist feminists and their ability to mobilize and to promote social change has enabled them to engage in important activism. Marxist feminists challenge capitalism in ways that facilitate new discourse and sheds light on the status of women. These women throughout history have used a range of approaches in fighting hegemonic capitalism, which reflect their different views on the optimal method of achieving liberation for women.
Wages for housework
Focusing on exclusion from productive labor as the most important source of female oppression, some Marxist feminists devoted their activism to fighting for the inclusion of domestic work within the waged capitalist economy. The idea of creating compensated reproductive labor was present in the writings of socialists such as Charlotte Perkins Gilman (1898) who argued that women's oppression stemmed from being forced into the private sphere. Gilman proposed that conditions for women would improve when their work was located, recognized, and valued in the public sphere.
Perhaps the most influential of the efforts to compensate reproductive labor was the International Wages for Housework Campaign, an organization launched in Italy in 1972 by members of the International Feminist Collective. Many of these women, including Selma James, Mariarosa Dalla Costa, Brigitte Galtier, and Silvia Federici  published a range of sources to promote their message in academic and public domains. Despite the efforts beginning with a relatively small group of women in Italy, The Wages for Housework Campaign was successful in mobilizing on an international level. A Wages for Housework group was founded in Brooklyn, New York with the help of Federichi. As Heidi Hartmann acknowledges (1981), the efforts of these movements, though ultimately unsuccessful, generated important discourse regarding the value of housework and its relation to the economy.
Sharing the responsibility of reproductive labor
Another solution proposed by Marxist feminists is to liberate women from their forced connection to reproductive labor. In her critique of traditional Marxist feminist movements such as the Wages for Housework Campaign, Heidi Hartmann (1981) argues that these efforts "take as their question the relationship of women to the economic system, rather than that of women to men, apparently assuming the latter will be explained in their discussion of the former." Hartmann (1981) believes that traditional discourse has ignored the importance of women's oppression as women, and instead focused on women's oppression as members of the capitalist system. Similarly, Gayle Rubin, who has written on a range of subjects including sadomasochism, prostitution, pornography, and lesbian literature as well as anthropological studies and histories of sexual subcultures, first rose to prominence through her 1975 essay ''"The Traffic in Women: Notes on the 'Political Economy' of Sex"'', in which she coins the phrase "sex/gender system" and criticizes Marxism for what she claims is its incomplete analysis of sexism under capitalism, without dismissing or dismantling Marxist fundamentals in the process.
More recently, many Marxist feminists have shifted their focus to the ways in which women are now potentially in worse conditions after gaining access to productive labor. Nancy Folbre (1994) proposes that feminist movements begin to focus on women's subordinate status to men both in the reproductive (private) sphere, as well as in the workplace (public sphere). In an interview in 2013, Silvia Federici urges feminist movements to consider the fact that many women are now forced into productive and reproductive labor, resulting in a "double day". Federici (2013) argues that the emancipation of women still cannot occur until they are free from their burdens of unwaged labor, which she proposes will involve institutional changes such as closing the wage gap and implementing child care programs in the workplace. Federici's (2013) suggestions are echoed in an similar interview with Selma James (2012) and these issues have been touched on in recent presidential elections.
Intersectionality and Marxist feminism
With the emergence of Intersectionality as a widely popular theory of current feminism, Marxist feminists are broadening their focus to include other identities that could put someone at an increased risk for exploitation in a capitalist system. The current organization Radical Women provides a clear example of successful incorporation of the goals of both Marxist feminism and intersectional analyses. They contend that elimination of the capitalist profit-driven economy will remove the motivation for sexism, racism, homophobia, and other forms of oppression.
Marxist-feminist critiques of liberal feminism
Clara Zetkin and Alexandra Kollontai are opposed to forms of feminism that reinforce class status. They do not see a true possibility to unite across economic inequality because they argue that it would be extremely difficult for an upper class woman to truly understand the struggles of the working class.
"For what reason... should the woman worker seek a union with the bourgeois feminists? Who, in actual fact, would stand to gain in the event of such an alliance? Certainly not the woman worker." - Alexandra Kollontai, 1909
Critics like Kollontai (1909) believed liberal feminism would undermine the efforts of Marxism to improve conditions for the working class. Marxists supported the more radical political program of liberating women through socialist revolution, with a special emphasis on work among women and in materially changing their conditions after the revolution.
- Ferguson, A. & Hennessy, R. (2010).  Feminist Perspectives on Class and Work. Stanford Encyclopedia of Philosophy.
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- Vogel, L. (2013). Marxism and the Oppression of Women: Toward a Unitary Theory .
- Hartmann, H. (1981) The Unhappy Marriage of Marxism and Feminism: Towards a More Progressive Union. Feminist Theory Reader, 187-199.
- Gilman, C. P. (1898).  Women and Economics: A Study of the Economic Relation Between Men and Women as a Factor in Social Evolution.
- Gardiner, B. (2012). A Life in Writing. Interview with Selma James.
- Dalla Costa, M. & James, S. (1972). The Power of Women and the Subversion of the Community
- Cox, N. & Federici, S. (1975).Counter-Planning from the Kitchen: Wages for Housework a Perspective on Capital and the Left.
- Folbre, N. 1994. Who Pays for the Kids? Gender and the Structures of Constraint. 
- Vishmid, M.(2013). Permanent Reproductive Crisis: An Interview with Silvia Federici 
- Mitchell, E. (2013) I am a Woman and a Human: A Marxist Feminist Critique of Intersectionality.
- The Radical Women Manifesto: Socialist Feminist Theory, Program and Organizational Structure, Red Letter Press, 2001, ISBN 0-932323-11-1, pages 2–26.
- Zetkin, Clara On a Bourgeois Feminist Petition 1895
- Zetkin, Clara Lenin on the Women’s Question
- Kollontai, Alexandra The Social Basis of the Woman Question 1909
- Kollontai, Alexandra Women Workers Struggle For Their Rights 1919
- Marxism, Liberalism, And Feminism (Leftist Legal Thought) New Delhi, Serials (2010) by Dr.Jur. Eric Engle LL.M.
- Silvia Federici, recorded live at Fusion Arts, NYC. 11.30.04
- Marxist Feminism
- Feminism of the Anti-Capitalist Left by Lidia Cirillo