The Regulation Collective

You can be competent, committed, and still find yourself rereading the same email three times, forgetting simple steps, or feeling wiped out before the real workday even starts. That is often how allostatic load impacts job performance – not as a lack of capability, but as the cumulative biological cost of carrying chronic stress across work and home domains (McEwen, 1998).

For working mothers, this matters because the strain is rarely coming from one source. It builds through matrescence, sleep disruption, role overload, constant task-switching, low job control, emotional demands, and the pressure to remain professionally steady while the nervous system is already operating under load. Safe Work Australia recognizes high job demands, low role clarity, poor support, low control, and remote or isolated work among the core psychosocial hazards employers must manage because they can cause both psychological and physical harm (Safe Work Australia, 2022). When those hazards sit on top of the invisible labor of motherhood, performance changes are often a predictable neurobiological response.

What allostatic load actually means at work

Allostasis is the body’s process of adapting to challenge through stress-response systems such as the hypothalamic-pituitary-adrenal axis, autonomic nervous system, immune signaling, and metabolic activity. Allostatic load is what happens when those adaptive systems are activated too often, too intensely, or without enough recovery (McEwen & Stellar, 1993). Over time, the body pays a price for staying prepared.

At work, that price does not always look dramatic. It can look like slower processing speed, reduced working memory, irritability in meetings, lower frustration tolerance, decision fatigue, and the sense that every small demand takes more effort than it should. Research has repeatedly linked chronic stress exposure with changes in attention, memory, executive function, and emotional regulation – all functions that most knowledge work depends on (Lupien et al., 2009; Liston et al., 2009).

For mothers, this is not separate from matrescence. The transition into motherhood is a major neurobiological and identity shift, not a minor lifestyle adjustment. That shift can heighten sensitivity to workload, sleep fragmentation, social evaluation, and competing role demands. The issue is not that mothers are less capable. The issue is that maternal workers are often expected to perform inside systems that ignore the cumulative load they are carrying.

How allostatic load impacts job performance day to day

Attention becomes harder to hold

Chronic activation of stress systems narrows attention toward immediate demands and potential threats. That can be useful in short bursts. It is less useful when the job requires sustained concentration, prioritization, and complex reasoning. Under higher allostatic load, a mother may appear distracted when what is actually happening is reduced attentional bandwidth.

This is one reason work can feel strangely harder after returning from leave or during periods of heavy family demand. The problem is not motivation. It is that the nervous system is allocating resources toward adaptation and vigilance, leaving less available for deep cognitive work (Lupien et al., 2009).

Working memory gets crowded out

Working memory is what allows a person to hold information in mind long enough to use it. It supports planning, following multi-step instructions, participating in meetings, and switching between tasks without losing the thread. Sleep disruption and chronic stress both impair working memory performance (Lim & Dinges, 2010; Shields et al., 2016).

That matters because many working mothers are already carrying high mental load outside formal job tasks. School logistics, medical appointments, household coordination, emotional monitoring, and future planning all consume cognitive capacity. When workplace systems add ambiguity, constant interruptions, or unrealistic responsiveness expectations, the result is not just feeling busy. It is cognitive overload.

Decision-making becomes more effortful

Under chronic stress, people often rely more on habit, speed, or short-term problem solving and less on flexible, reflective decision-making (Arnsten, 2009). In a workplace, that can show up as difficulty evaluating options, avoiding nonurgent decisions, or feeling flooded by tasks that would normally be manageable.

For a mother in a high-demand role, this can be misread as loss of confidence or declining leadership capacity. Often it is neither. It is a stress-loaded brain doing what human brains do under repeated pressure.

Emotional regulation takes more energy

When allostatic load is elevated, emotional control is not absent. It is simply more metabolically expensive. A comment that would usually be brushed off may land hard. A minor workflow issue may trigger outsized frustration or tears. That does not mean the reaction is irrational. It often means the person’s regulatory capacity has been taxed for too long.

This is where workplace culture matters. If a mother is forced to mask strain while receiving little practical support, the effort of appearing fine becomes another layer of load. Emotional labor is work. When it is unrecognized, performance costs follow.

Why this hits working mothers differently

The maternal workforce is not a niche category. It is a predictable exposure group for psychosocial risk because the five neuroscience pillars frequently converge.

Matrescence reshapes identity, priorities, and neurobiology. Nervous system dysregulation can follow prolonged sleep fragmentation, caregiving vigilance, and chronic unpredictability. Allostatic load builds when stress activation outpaces recovery. Mental load compounds formal work with invisible planning and coordination work. Neuroplasticity means the brain can adapt, but adaptation depends on environment, repetition, and support.

So yes, how allostatic load impacts job performance depends on the person, the job, the age of the children, sleep, caregiving complexity, and workplace design. But the pattern is not random. Working mothers are often exposed to stacked demands with too few controls. That makes underperformance narratives misleading. In many cases, what employers are seeing is unmanaged psychosocial risk.

What employers need to understand

Under ISO 45003:2021, organizations are expected to identify psychosocial hazards, assess associated risks, and implement control measures within occupational health and safety systems (International Organization for Standardization, 2021). Safe Work Australia takes the same basic position: psychosocial hazards must be treated like other workplace hazards, through prevention and risk control rather than reactive support alone (Safe Work Australia, 2022).

That distinction matters. If a worker’s concentration, emotional regulation, or output has changed, the response cannot begin and end with resilience language or generic employee support. Employers need to ask what in the work design, management practices, reporting structures, workload expectations, and support systems may be contributing to cumulative load.

For maternal workers, common pressure points include rigid scheduling, low autonomy, poor return-to-work design, unclear performance expectations after parental leave, meeting cultures that punish caregiving realities, and manager assumptions that reduce psychological safety. None of those are personal failings. They are organizational conditions.

The Victorian OHS Psychological Health Regulations 2025 raise the bar further by requiring documented, proactive control measures for psychosocial hazards. For employers, that means maternal workforce strain is not just a retention issue or a culture issue. It is a compliance issue.

What mothers need to hear clearly

If your performance feels less stable than it used to, that does not automatically mean you have become less capable. Chronic overload changes cognition. Sleep disruption changes cognition. Prolonged stress exposure changes cognition. These are measurable effects, not character judgments (Lupien et al., 2009; McEwen, 1998).

That does not mean every hard week is allostatic load, and it does not mean every workplace problem can be explained by biology alone. Sometimes role design is the main issue. Sometimes caregiving intensity is. Usually it is an interaction between the two. But if you have been blaming yourself for not being able to think, focus, or regulate the way you once did, the evidence does not support the idea that this is simply poor coping.

The control measure has to match the risk

A real response to maternal workforce strain has to be auditable, specific, and grounded in how stress actually affects cognitive and occupational function. That is why Amanda Doggett’s work through The Regulation Collective is structured as a compliance-grade psychosocial risk control measure, not a generic well-being offer. The point is to identify where maternal workers are carrying disproportionate load, document the risk, and implement interventions that align with ISO 45003:2021 and applicable Australian obligations.

That is the shift many organizations still have not made. They are trying to solve measurable neurobiological strain with broad culture messaging. The mismatch is costly. It shows up in retention, absenteeism, presenteeism, errors, disengagement, and avoidable capability loss.

If work is taking more out of you than it used to, there may be a reason that is more concrete than lack of discipline. And if you employ mothers, there is a reason this keeps showing up in performance, engagement, and retention data. The question is not whether the load is real. The question is whether your workplace is treating it as a measurable risk or leaving women to absorb it alone.

References

Arnsten, A. F. T. (2009). Stress signalling pathways that impair prefrontal cortex structure and function. Nature Reviews Neuroscience, 10(6), 410-422.

International Organization for Standardization. (2021). ISO 45003:2021 Occupational health and safety management – Psychological health and safety at work – Guidelines for managing psychosocial risks.

Lim, J., & Dinges, D. F. (2010). A meta-analysis of the impact of short-term sleep deprivation on cognitive variables. Psychological Bulletin, 136(3), 375-389.

Liston, C., McEwen, B. S., & Casey, B. J. (2009). Psychosocial stress reversibly disrupts prefrontal processing and attentional control. Proceedings of the National Academy of Sciences, 106(3), 912-917.

Lupien, S. J., McEwen, B. S., Gunnar, M. R., & Heim, C. (2009). Effects of stress throughout the lifespan on the brain, behaviour and cognition. Nature Reviews Neuroscience, 10(6), 434-445.

McEwen, B. S. (1998). Protective and damaging effects of stress mediators. New England Journal of Medicine, 338(3), 171-179.

McEwen, B. S., & Stellar, E. (1993). Stress and the individual: Mechanisms leading to disease. Archives of Internal Medicine, 153(18), 2093-2101.

Safe Work Australia. (2022). Managing psychosocial hazards at work: Code of practice.