The back-to-school mental load is, by now, a familiar subject: the lists, the uniform runs, the packed lunches researched and costed weeks in advance, the forms that somehow only one parent ever notices arriving. What is less familiar is any meaningful change in who carries it. September comes around, and so does the same division of labour.
This is not anecdote. It is arithmetic.
The numbers behind the back-to-school mental load
According to the Gender Equity Policy Institute, mothers spend 2.1 times as much time as fathers on the essential, unpaid work of caring for home and family. Among working parents specifically, women spend twice as many hours per week as men on childcare and household work combined. Twice. Not slightly more, not a noticeable gap: double.
Zoom out further and the picture does not improve. SAGE Journals reports that globally, women perform 76 per cent of all unpaid care work, three times the share carried by men. The back-to-school rush is not a seasonal anomaly; it is one concentrated, visible moment in a continuous and largely invisible pattern.
What makes September useful, as a lens, is precisely that visibility. The trolleys in the stationery aisles are, if you look, mostly pushed by women. The WhatsApp messages about PE kit days and reading-record deadlines travel, predominantly, to mothers’ phones. The cognitive overhead of tracking all of it, of knowing without being asked, sits with the person who has always known without being asked.
Why the ‘slack’ framing matters less than the structure
The language of ‘picking up the slack’ deserves some scrutiny. Slack implies that the other party was simply distracted, temporarily absent, meaning to get to it. The data suggests something more structural: a baseline expectation, absorbed across generations, that the management of family logistics belongs to women by default. Fathers who ‘help’ are praised; mothers who do the same work are simply doing what is assumed of them.
This is where the back-to-school mental load intersects with something larger than parenting. The Gender Equity Policy Institute’s research also finds that young women aged 18 to 24 already experience one of the largest free-time gender gaps, with 20 per cent less free time than men of the same age. Before many of these women have children, the pattern is already established. The expectation of availability, of being the person who notices and manages, does not begin with the first school term. It is already running.
The question of why this persists is one that generates a great deal of earnest discussion and rather less change. Workplace cultures that penalise women for part-time arrangements while quietly expecting them to absorb domestic labour. School communications that, despite all best intentions, still default to contacting the mother. The domestic architecture of most households, built on the understanding that someone is managing it, with that someone rarely named and almost never male.
None of this is news, exactly. What shifts is the accumulation of evidence. The research from SAGE Journals, the Gender Equity Policy Institute’s free-time data, these are not opinion pieces or personal essays. They are measured counts of hours and responsibilities, and they point in the same direction with the consistency of something that has not been disrupted as thoroughly as some had hoped.
Back to school, then. The lists are written. The bags are packed. The question of who packed them, who remembered the water bottle and the library book and the permission slip, is one Stylist has been raising for years. The data, at least, is now longer and louder than it used to be.
