Married women do more housework than single mothers. Here's why

Adding a second adult to a household should halve the domestic work. Research shows it does the opposite for women

By Ambia Staley6 min readUpdated May 20, 2026

Married women do more housework than single mothers. Here's why

d3sign / Getty Images

A mother raising children on her own should, by every intuitive measure, be the most time-pressed parent in America. She has no partner to split the cooking, laundry, or school pickups. Yet women married to men spend more time on housework than single mothers, according to a study published in the journal Demography by sociologists at the University of Texas at Austin, the University of Maryland, and the University of Southern California. Adjusted for differences in employment, education, race, and number of children, married women spend an average of 2.95 hours daily on housework, compared to 2.41 hours for unmarried women.

The finding runs counter to what researchers call the "time poverty thesis," which holds that single mothers suffer a time disadvantage because they lack a partner to share the load. After adjusting for other factors, married mothers did more housework and slept less than never-married and divorced mothers, according to study co-author Joanna Pepin. That gap is part of what makes divorce feel like a "lightening of the load" for many women leaving marriage.

The second-adult penalty

The common-sense assumption is that a second adult in the house creates economies of scale. Two people should be able to divide labor more efficiently than one. But the Pepin, Sayer, and Casper study, which analyzed time-diary data from more than 23,000 mothers in the Bureau of Labor Statistics' American Time Use Survey between 2003 and 2012, found the opposite for married women.

Married mothers did more housework at the expense of their own leisure and sleep, while nonpartnered mothers tended to do less housework and sleep somewhat more. Married mothers reported spending 10 minutes less daily on leisure and 13 minutes less daily on sleep — small differences that compound over a week, a month, a year.

A Pew Research Center analysis of the same data source found that married mothers spend 19 hours per week on housework, compared with 14 hours for single mothers and 16 hours for mothers living with a partner. That five-hour weekly gap between married and single mothers is not accounted for by children.

What accounts for the gap? Having another adult in the house does not always increase the amount of household work. Women with extended family members around, in addition to their husbands, report spending less time on housework. Mothers who lived with extended family members spent less time on housework and child care; rather than adding to mothers' chores, extended family members seem to offer a hand. The burden is particularly pronounced when the second adult is a husband or male partner.

Marriage as a gender factory

The researchers attribute the discrepancy to what sociologists call "doing gender." Introduced by Candace West and Don Zimmerman in their 1987 article in Gender & Society, the concept holds that gender is not an innate quality of individuals but a social construct that surfaces in everyday interaction. In the context of marriage, household tasks become performances of femininity and masculinity.

The study's authors write that "married mothers increase housework in part to meet expectations about home-cooked meals, clean clothes, and well-kept houses — behavior integral to contemporary definitions of appropriate behavior for wives and mothers." They conclude that "marriage remains a gendered institution that ratchets up the demand for housework and childcare through essentialist beliefs that women are naturally focused on home and hearth."

Cohabiting mothers offer a useful comparison. They spent about the same amount of time doing housework and sleeping as married mothers, but reported more leisure time. Researchers hypothesize that married women may specialize in household tasks more than cohabiting women because "homemaking" is a more central ingredient for the gendered role of "wife" than for "cohabiting partner."

Single mothers, free of these relational expectations, do not "perform" wifehood. No one is watching to assess whether dinner was cooked from scratch or whether the laundry basket is empty.

The invisible layer: Cognitive labor

The time-use data captures physical tasks such as cooking, cleaning, and laundry. They do not measure the mental work that scaffolds it all. A 2019 study in the American Sociological Review by Allison Daminger, now a sociologist at the University of Wisconsin–Madison, found, through 70 in-depth interviews with members of 35 couples, that cognitive labor entails anticipating needs, identifying options for meeting them, making decisions, and monitoring progress. Because such work is taxing but often invisible, it is a frequent source of conflict for couples.

In 26 of the 32 different-sex couples Daminger interviewed, the female partner completed more total cognitive labor than her husband. Women were far more likely than men to anticipate and monitor, while men were more involved in decision-making. The implication is that the housework gap measured in time-use surveys understates the true scope of domestic inequality: It catches the execution but not the project management.

Daminger's subsequent research found that women carrying the cognitive load experience higher anxiety and burnout. This invisible coordination tax may help explain why adding a husband to the household does not reduce a woman's domestic burden. Managing another adult's participation in housework can itself become a form of labor.

What does the data mean for marriage

None of this implies that single motherhood is easier than marriage in aggregate. Single mothers face material disadvantages — lower incomes, less institutional support, more social stigma — that time-use data do not capture. The study's authors caution that their findings "are not meant to imply that single moms have it easier than those with partners. There are many factors beyond housework that create stress and challenges for single mothers."

But the data does clarify a mechanism that shapes women's experience of marriage. Getting married appears to exacerbate the burden of household work on women. Married women do more household work than their single peers, while married men spend just minutes a day more than their single peers, according to the Gender Equity Policy Institute's analysis of American Time Use Survey data.

In 1972, the sociologist Jessie Bernard argued in her book The Future of Marriage that in every marriage there are two marriages — his and hers — and that sociological data reveal marriage is more beneficial for men than for women. The housework data suggest one concrete mechanism through which Bernard's insight still operates: Marriage activates a set of gendered expectations that inflate women's domestic workload even when it doesn't need to be.

The question this raises for the institution is not abstract. If the formal commitment of marriage increases a woman's housework by about 30 minutes a day while decreasing her leisure and sleep, the practical calculus of that commitment shifts. For an increasing number of women, the math no longer adds up.

The essential business news, delivered fresh every morning.

Join 500,000+ readers who start their day with Quartz.

By subscribing, you agree to our Terms of Service and Privacy Policy.