Why is Mental Load Carried More by Women?

Mental load is the invisible, cognitive, and emotional work of managing a household and family — the planning, anticipating, remembering, and organizing that keeps everything running. It's not just doing tasks. It's knowing what tasks need to exist in the first place. 

In other words: you don't just do the task. You're the one who saw it coming, figured out the options, and is already checking whether it got done.

You don’t just note that kid’s school pajama day is on Friday. You are the one figuring out which pajama they wish to wear, and helping them decide - at 10:00 p.m. when you are tired to the bones - which stuffie they want to carry to school. And then read a bedtime story to put them to sleep. 

Did you know: 

Mothers carry, on average, 71% of a household's mental load tasks.
This is from a study by Catalano Weeks & Ruppanner, Journal of Marriage and Family, 2024, University of Bath / University of Melbourne

That's not an opinion. That's a peer-reviewed, published finding from one of the most comprehensive studies of cognitive household labor to date. Researchers Ana Catalano Weeks and Leah Ruppanner studied US parents and found that even in households where both partners work full-time, the cognitive load falls disproportionately on mothers.

Their research also found that the mental load doesn't decrease when women earn more, work longer hours, or are the primary breadwinner. It just sits there. Waiting. Regardless of working status. 71% of the household’s mental load. 

Did you know: 

Mothers spend twice as much time everyday in childcare than fathers do?

Source: Gender Equity Policy Institute study titled The Free-Time Gender Gap, October 2024. 

And if you were hoping that was a one-study fluke — think again.

A separate 2024 study out of USC, published in the Archives of Women's Mental Health, looked at 322 mothers and landed at 73%. Two independent research teams. Two different samples. The same year. Two points apart.

When science converges that cleanly, "maybe it's just me" stops being a reasonable explanation.

So why does it fall this way — even in households where both partners work, both contribute, both genuinely mean well?

The Manager vs. ‘Helper’ Split 

Research by Allison Daminger of the Department of Sociology at University of Wisconsin-Madison points to the dynamic underneath: the manager versus helper split.

Cue inquisitive music. 

One person holds the system — knows what needs to be done, which tasks exist, makes some decisions, assigns them, and checks they got done. The other person executes what they're handed - most often with detailed instructions. Both are participating. Only one of them is running the household.

One person says “just ask when you need help!” or “make me a list”. The other person is the one making lists along with an instruction manual on how to do things in one’s own household. 

Doing a task you were given is a contribution. Holding the entire operational infrastructure of a family in your head, indefinitely, is ownership. These are not the same job. They are not even on the same plane. They do not require the same energy. And the second one almost never comes up when someone says "we split everything pretty evenly." 

50/50 is an interesting number to use when it comes to household management. Is it always 50/50? Which 50 is each one holding?

Typically when 50/50 is referenced, it does so only to the tasks. ‘Doing Tasks’  is just one component of the mental load. The real mental load comes from:

• Knowing which tasks exist
  Dishwasher needs to be emptied - why - because baby needs the feeding bottle that’s in the dishwasher for the 2:00 a.m. feed and everything needs to be easily accessible by a groggy mom who hasn’t slept in ages

• What their priority is
  Science project for 3rd grader is due in a week so the volcano supplies need to be here now

• When the tasks need to get done
  Some time before the 3rd follow up, please, reducing the “hey have you done…” and the “just checking” pings
  …and in most cases

• How to get it done
  Decide on the project with kid, ensure idea meets school requirements, confirm other kids are not doing the same thing, list out supplies needed, buy supplies (order or in person, if in person when are you going to make the trip to the store between school pickup, soccer practice, and dinner time, and a completely packed weekend), help kid with the project and guide her where she needs but not so much that she feels babied, help her write about her project in the display board, oh wait it needs to be printed out = ensure printer has ink, decipher if it shows that kid has learnt something in class, if it doesn’t help her rewrite it, then print it out for her because she’s not fluent in font sizes for presentations yet, when she’s pasting things on the board keep her from smelling the glue too much, and finally once everything is done, keep the baby from accidentally splattering all of the puréed fruits made for breakfast right onto the board about volcanos. 

When the “make me a list” request comes in, it is possible to see that the list is not just a collection of bullets, but a whole lot of thought that has to go into making that list. 

This is the reason that that 50/50 split, while may be true for physical task execution, does not capture the weight of the mental load that resides within one person’s mind - the ‘manager’s’, who most often is the woman in the household. 

And before anyone says well, this is just a heterosexual-couple problem — it isn't.

Single parents carry the full load by definition, with no one to not-share it with. Same-sex couples report more equitable splits, but get there through active, ongoing negotiation rather than default — which is itself a form of cognitive labor. Multigenerational households layer elder care on top of child care: the sandwich generation, holding it together from both ends simultaneously, often without a name for what that costs.

The cast changes. The pattern doesn't. Somewhere in almost every household, there is one person who became the default project manager of everyone else's life.

She probably didn't apply for the job.

So why do women carry the majority of the mental load? 

The honest answer is: it's not biology. It's not that women are naturally more organized, more detail-oriented, or more caring. It's that they were trained to be — and the training started early.

From childhood, girls are socialized to notice. To anticipate. To make sure everyone's okay. To be the one who remembers. By the time a woman is running a household, she's been practicing cognitive labor for decades. Not because it's innate. Because it was expected.

Her partner, statistically, was not trained the same way.

It's Also About Visibility

You can't take ownership of work you can't see. And mental load — by definition — is invisible.

Allison Daminger's research (American Sociological Review, 2019) found that the stages of cognitive labor women disproportionately carry are precisely the ones that happen before a task becomes visible: anticipating needs and monitoring outcomes. The stages that require no tool, leave no artifact, and produce no evidence of effort.

If you've never had to notice that the cereal is running low, you don't know there's anything to notice. If nobody's ever expected you to track the dentist appointment, you don't walk around with it quietly loaded in your brain.

Invisibility isn't just a communication problem. It's a participation problem.

It's Structural, Not Personal

Research by Catalano Weeks and Ruppanner (Journal of Marriage and Family, 2024) found that the mental load gap persists regardless of how much women earn, how many hours they work, or whether they're the primary breadwinner. It doesn't correct itself when women succeed professionally. It just adds a second job on top.

Research published in European Societies (Haupt & Gelbgiser, 2024) found that this unequal cognitive load directly constrains women's career progression and earnings — independently of how physical tasks are divided. The thinking underneath the household is its own burden. Separate. Additional. Uncompensated.

This isn't a him problem. It's a system problem. One that was built over generations, runs mostly on default, and doesn't fix itself just because two people love each other and mean well.

The Default Setting

Here's the mechanism in plain terms.

At some point — often early in a relationship, often accelerating after children — one person becomes the household's default project manager. They're the one the school calls. Twice before the other parent’s phone rings. The one whose name is on the forms. The one who knows the logistics. The one who, if they went offline for a week, would leave the entire operation without an operating system.

That person is almost always the woman. Not because she volunteered. Because the role accreted to her — task by task, assumption by assumption — until it was simply hers.

Changing that default isn't a conversation. It's a restructuring, a reframing - both physical and more importantly, mental. 

What can I do to engage my partner and not be the only one stressed, anxious or carrying the mental load? 

Awareness helps. Research suggests that couples who explicitly name and discuss the cognitive labor split are better positioned to redistribute it.

But awareness alone doesn't move the number. What moves it is structural change: domain ownership instead of task helping, updated defaults, tools that externalize the household's institutional knowledge so it doesn't all have to live in one person's head.

Sharing the mental load is not just about effort — your partner is probably making a genuine effort and probably truly wants you to offload some of your load to them. But what extracts the real issue is discussing cognitive management. About who holds the household's mental load. About what it costs, in health and time and career, for that to sit with one person indefinitely.

The 71% figure (Catalano Weeks & Ruppanner, 2024) didn't get there by accident. It won't leave by accident either.

We’ll explore the ‘how to’ in more detail shortly.