Too Hot to Work: When Office Temperature Becomes a Workplace Risk

Picture this: it is a warm Tuesday in June. The office is at around 23°C. The air conditioning is temperamental. For most people in the building, it is a mildly uncomfortable afternoon. For the woman in the third-floor meeting room managing her seventh hot flush of the day, it is something else entirely.

Hot flushes are the most widely reported menopause symptom in the UK - affecting approximately 75% of women going through perimenopause and menopause. And yet workplace environments are almost never designed with them in mind. Thermostats are set for average comfort. Dress codes were written in a different era. Risk assessments do not routinely ask whether any employee in the room has a narrowed thermoneutral zone.

This matters because, under existing UK law, it should.

Temperature is not just a comfort issue for women in menopause. For many, it is the difference between being able to function at work and not functioning at all.

This article sets out the physiology, the legal framework, and the practical obligations employers have - and why getting this right is not a nice-to-have but a measurable component of retaining experienced women in the workforce. For the full picture on what menopause costs organisations that do not act, The Hidden Cost of Menopause at Work: Absence, Presenteeism and Productivity Loss sets out the financial and legal exposure in detail.

In this article

●      Why hot flushes are triggered by office temperature

●      What UK law requires employers to do

●      Which adjustments make the biggest difference

●      How temperature affects productivity and retention

●      Practical actions HR can take today

Why Hot Flushes Are Not Simply About Feeling Warm

To understand why temperature matters so much in a workplace context, it helps to understand what is actually happening in the body during a hot flush. This is not a subjective sensation or a matter of personal preference. It is a physiological event triggered by a measurable neurological change.

Oestrogen plays a central role in regulating the hypothalamus - the part of the brain that acts as the body’s internal thermostat. During perimenopause and menopause, declining oestrogen levels cause a group of neurons in the hypothalamus — known as KNDy neurons, expressing kisspeptin, neurokinin B and dynorphin - to become overactive. This overactivity narrows what researchers call the ‘thermoneutral zone’: the range of core body temperature in which the body sits comfortably without triggering a heating or cooling response.

In women without menopause symptoms, the thermoneutral zone is wide enough that minor fluctuations in ambient temperature or activity level pass without incident. In women experiencing perimenopause or menopause, that zone narrows significantly. A small rise in core temperature - triggered by a warm room, a hot drink, a moment of stress, or simply standing up from a desk - can be sufficient to trigger a full vasomotor response: rapid peripheral vasodilation, intense heat sensation moving up through the chest and face, profuse sweating, and sometimes a subsequent chill as the body overcorrects.

A hot flush typically lasts one to five minutes. Women may experience them several times a day or, in more severe cases, many times per hour. Around 30% of women experience severe symptoms. For some, symptoms persist for more than seven years. Crucially, the research shows that ambient temperature is one of the most consistent environmental triggers - meaning that a warm office is not a neutral background condition for a symptomatic woman. It is an active risk factor.

A warm office is not a neutral background condition for a woman experiencing menopause. It is an active physiological trigger - and the law recognises this.

What UK Law Says About Workplace Temperature and Menopause

There is a common misunderstanding about temperature regulation in UK workplaces: that because there is no statutory maximum working temperature, employers have no obligation to act on employee heat complaints beyond general goodwill. This is not accurate.

The Health and Safety at Work etc. Act 1974

Under section 2 of the Health and Safety at Work etc. Act 1974, employers have a duty to ensure, so far as is reasonably practicable, the health, safety and welfare of all employees at work. This is a broad, ongoing obligation - not a minimum threshold that is only triggered when a legal limit is exceeded. The absence of a maximum temperature figure in regulation does not remove the duty of care.

The Workplace (Health, Safety and Welfare) Regulations 1992

Regulation 7 of the Workplace (Health, Safety and Welfare) Regulations 1992 requires employers to maintain a ‘reasonable’ indoor temperature during working hours. The HSE Approved Code of Practice L24 states that temperatures should provide “reasonable comfort without the need for special clothing.” Where that cannot be achieved, employers must take all reasonable steps to get as close to comfortable conditions as possible.

The HSE’s guidance on thermal comfort is explicit that room temperature alone does not determine whether conditions are acceptable. Thermal comfort is assessed across six factors: air temperature, radiant temperature, air velocity, humidity, clothing, and metabolic rate (work activity). For a woman managing menopause symptoms, several of these factors interact in ways that tip her personal threshold earlier and more severely than for colleagues without symptoms.

The HSE’s own thermal comfort guidance specifically references menopause, stating that “applying the control measures in these webpages should ensure the welfare of those with a hormonal imbalance due to the menopause or thyroid imbalance.” That is not a suggestion. It is the HSE’s statement of the scope of the existing legal duty.

The Management of Health and Safety at Work Regulations 1999

These regulations require employers to carry out suitable and sufficient risk assessments of all health and safety risks, including temperature-related ones. The HSE guidance on thermal comfort makes clear that risk assessments must take into account employees with health conditions or disabilities that are affected by temperature. Where menopause symptoms have a substantial and long-term adverse effect on normal day-to-day activities - which they frequently do - they may constitute a disability under the Equality Act 2010.

The Equality Act 2010

Under the Equality Act 2010, where menopause symptoms meet the disability threshold, employers are required to make reasonable adjustments. Failure to provide temperature adjustments in that context is not just a health and safety oversight - it is a potential disability discrimination claim. The Equality and Human Rights Commission (EHRC) guidance on menopause in the workplace is clear that employers must consider how existing workplace conditions interact with menopause symptoms, and take proportionate steps to address this.

Employment tribunal case law in this area is developing rapidly. Where employers have failed to make reasonable adjustments for menopausal women - including around working conditions - successful claims have included both disability discrimination and sex discrimination grounds.

For a full overview of your legal rights during menopause, including the Equality Act protections and how they apply, Menopause at Work: Your Legal Rights covers the UK framework in detail.

‍The Problem Most Employers Are Not Measuring

CIPD research published in 2023 found that the ability to control local temperature is the second most valued workplace adjustment for women managing menopause symptoms - cited by 46% of respondents, just behind flexible working at 48%. Yet only 25% of women surveyed said their organisation actually provided it.

That gap - 46% wanting temperature control, 25% getting it - is not simply a satisfaction metric. It has measurable productivity and retention consequences.

When a woman in a warm open-plan office experiences a hot flush during a team meeting, she does not simply feel uncomfortable and move on. She may lose concentration entirely for the duration. She may be visibly distressed, which affects her confidence in public-facing or leadership situations. She may spend the next twenty minutes physically recovering - regulating her temperature, dealing with the aftermath of sweating, and managing the anxiety that frequently accompanies severe vasomotor events. She may leave the meeting early. She may avoid certain environments, certain meetings, certain days in the office altogether.

The DWP’s 2025 Menopause in the Workplace Literature Review records a figure of £22.4 million for presenteeism costs - though this is widely considered a significant undercount, given how difficult reduced-capacity working is to measure in standard surveys. The NHS Confederation’s 2024 Women’s Health Economics report puts the total economic impact of menopause at over £1.5 billion when unemployment effects are included. Whatever the precise figure, temperature - as the most consistently cited environmental trigger for vasomotor symptoms - sits close to its centre.

‍ ‍

The CIPD’s 2023 data also found that when women experience menopause symptoms without appropriate support, 79% report reduced concentration, 68% report increased workplace stress, and 49% report reduced patience. These are not subjective complaints. They are documented performance impacts - and they are worse in environments where temperature is not managed.

For many women, a hot flush at work isn’t simply uncomfortable. It can feel exposing. You may worry colleagues notice. You may avoid speaking in meetings. You may start turning down opportunities that put you in warm rooms, under bright lights or in front of clients. The physical symptom lasts minutes; the impact on confidence can last much longer. That is why the environment matters - not just as a health and safety metric, but as a signal to every woman in the building about whether this organisation sees her and takes her seriously.

The broader financial picture of what menopause costs organisations in absence, presenteeism, and talent loss is explored in The Hidden Cost of Menopause at Work: Absence, Presenteeism and Productivity Loss. If you are making the business case internally, start there.

The Numbers That Matter

75%  of women going through perimenopause and menopause experience hot flushes and/or night sweats (Freeman & Sherif, 2007; Blumel et al., 2011)

30%  experience severe vasomotor symptoms with significant functional impairment (My Menopause Centre, 2025; cited from primary literature)

46%  of women say the ability to control local temperature is one of the most helpful workplace adjustments (CIPD, 2023)

25%  of women say their employer actually provides it (CIPD, 2023)

79%  of unsupported women with menopause symptoms report reduced concentration at work (CIPD, 2023)

7+ years  median duration of vasomotor symptoms for many women - this is a sustained, long-term workplace risk, not a temporary phase .

Menopause Workplace Adjustments: Temperature, Thermal Comfort and Hot Flushes

The legal standard for reasonable adjustments is proportionality: what is reasonable for a large employer will differ from what is reasonable for a small one, and what is reasonable in an open-plan office will differ from what is reasonable on a manufacturing floor. But in most office environments, the adjustments required to meaningfully support women managing hot flushes are neither costly nor complex.

ACAS guidance on extreme temperatures at work is clear: employers should relax dress codes where practicable, provide additional cooling equipment such as fans, allow extra breaks to get cold drinks or access cooler spaces, and include employees with health conditions or disabilities in any temperature-related risk assessment. These are all low-cost, immediate interventions. The HSE thermal comfort guidance endorses each of them.

Environmental Controls

• Desk fans: inexpensive, immediate, and the single most commonly requested adjustment. Under ACAS guidance, providing them on request is the obvious baseline.

• Thermostat access: where possible, giving affected employees some control over ambient temperature in their workspace, or locating them near air conditioning or ventilation.

• Temperature-controlled rest spaces: a designated cooler area where someone can go during or after a hot flush episode, without needing to explain themselves or ask permission.

• Relocating desks away from south-facing windows or heat-producing equipment - a straightforward adjustment that may make a material difference.

Uniform and Dress Code

• Relaxing dress code requirements to allow layers, breathable fabrics and the ability to adapt clothing to temperature fluctuations across the working day.

• For frontline or uniformed roles: reviewing whether existing uniform specifications can be adapted, and providing alternatives where women are managing hot flushes in PPE or formal workwear.

• Allowing the removal of jackets, ties, or other formal garments during episodes without requiring explanation or approval.

Working Pattern and Environment

• Flexibility over start times: night sweats disrupt sleep, and a fixed 9am start for a woman who has been awake since 3am is a different kind of demand than it is for a colleague who slept well.

• Hybrid or remote working options on high-symptom days: the CIPD found 67% of women believe home and hybrid working makes managing menopause symptoms significantly easier.

• Access to cold drinking water throughout the day, including during meetings - not a luxury, but a basic mitigator of a known trigger.

• Breaks between meetings or intensive tasks: the recovery period after a hot flush is real and takes time. Back-to-back meetings in a warm room are a compounding risk factor.

‍A full guide to the adjustments women can request - and the framework for having that conversation - is in Menopause Workplace Adjustments: What You Can Ask For (UK Guide). For women who need guidance on how to raise this with their manager, How to Talk to Your Manager About Menopause offers a practical framework.

‍

The Manager Blind Spot: Why Good Intentions Are Not Enough

One of the most consistent findings in the menopause and workplace research literature is the gap between manager awareness and manager capability. Awareness - knowing that menopause affects women at work - is growing. Capability - knowing what to do about a specific situation, how to initiate a conversation, and what adjustments to put in place without asking the employee to manage everything herself - remains low.

Temperature is a good illustration of this. A manager who is broadly aware that menopause exists may still not connect a woman’s visible discomfort in a warm meeting room to a protected characteristic, a legal duty, or a preventable productivity loss. They may interpret it as a personal issue she will manage herself. They may feel it is not their place to raise it. And the woman, for her part, may not feel safe enough to bring it up.

This is where the legal risk accumulates: not in dramatic failures of duty, but in the slow accumulation of uncomfortable working conditions that were never addressed because no one created the conditions for the conversation to happen.

What good manager training actually covers - including how to identify temperature-related distress without intruding, and how to offer adjustments without putting the burden on the employee - is covered in Manager Confidence Isn’t Competence: Why Menopause Training Matters More Than Policy. Managers who want an immediate, practical starting point can download the free Menopause Manager Guide before any formal training is in place. ‍

‍ ‍

If You Are the Woman in That Meeting Room

Everything above is written for employers and managers. But if you are reading this as a woman who is managing hot flushes at work, and wondering whether what you are experiencing is reasonable to raise - the answer is yes. Unequivocally.

The symptoms you are managing are physiological. They have a documented neurological basis. They affect approximately three-quarters of women going through menopause. They are recognised in UK health and safety law as a factor that employers must include in thermal comfort risk assessments. You are not being difficult, dramatic, or unprofessional by asking for a fan, a cooler seat, or a different start time when your sleep has been broken by night sweats.

If you are not sure where to start - what you can ask for, how to frame the conversation, or what your employer is actually obliged to provide - Menopause Workplace Adjustments: What You Can Ask For (UK Guide) and Your Legal Rights at Work During Menopause are the practical starting points. The free Menopause at Work Survival Guide also covers how to manage symptoms in the workplace and navigate the conversations that go with it.

And if you are wondering whether what you are feeling at work is menopause, burnout, or something that has become hard to disentangle - Is It Menopause - or Am I Just Not Coping at Work Anymore? explores that question honestly.

‍ ‍

What Employers Can Do: A Practical Starting Point

• Include menopause in your thermal comfort risk assessment. The HSE guidance explicitly references hormonal imbalance due to menopause as a factor that existing thermal comfort controls should address. If your risk assessment does not currently include this, it is incomplete.

• ‍Provide fans on request, without requiring justification. This is the most commonly requested, lowest-cost adjustment available. The absence of a policy reason not to provide one means the default should be yes.

• ‍Review your dress code. Does it prevent women from adapting their clothing to manage temperature fluctuations? If so, it needs to change - for both comfort and legal compliance.

• ‍Create a confidential conversation route. Women should be able to raise temperature and environmental needs without having to explain their full medical history to a line manager. A menopause champion, HR contact, or occupational health referral pathway provides this.

• ‍Train your managers. Not just on menopause awareness, but on how to identify thermal discomfort and initiate a practical, non-intrusive adjustment conversation. What good training covers and why it matters beyond tick-box compliance.

• Use the free HR Checklist. The Menopause Workplace Assessment: HR Checklist gives you a structured audit of where your organisation currently sits across all the key dimensions - including environmental conditions.

• ‍Build toward your Equality Action Plan. As Equality Action Plan requirements are introduced under the Employment Rights Act 2025, temperature and working environment should form a named component of any menopause support strategy. What the Employment Rights Act 2025 requires and when.

‍ ‍A fan costs under £20. A tribunal costs tens of thousands. A resignation costs more than either. The adjustments that make the difference are almost always the simplest ones.

For a complete, integrated overview of how to build a menopause-supportive workplace - from policy and training to environment and culture - Menopause at Work: Support, Resources and Guidance for Employers and the Menopause at Work hub are the starting points.

References

1. Health and Safety at Work etc. Act 1974 (c.37). London: HMSO.

2. Workplace (Health, Safety and Welfare) Regulations 1992 (SI 1992/3004). London: HMSO. Including Approved Code of Practice L24 (2nd edition, 2013).

3. Management of Health and Safety at Work Regulations 1999 (SI 1999/3242). London: HMSO.

4. Equality Act 2010 (c.15). London: HMSO.

5. Employment Rights Act 2025 (c.32). London: HMSO.

6. Health and Safety Executive (2023). Thermal Comfort in the Workplace: Guidance for Employers. Available at: https://www.hse.gov.uk/temperature/thermal/

7. Health and Safety Executive (2023). Temperature in the Workplace: What the Law Says. Available at: https://www.hse.gov.uk/temperature/employer/the-law.htm

8. Health and Safety Executive (2023). Menopause and Thyroid Imbalance: Thermal Comfort. Referenced within HSE thermal comfort guidance. Available at: https://www.hse.gov.uk/temperature/thermal/

9. Advisory, Conciliation and Arbitration Service (2024). Extreme Temperatures in the Workplace. Available at: https://www.acas.org.uk/extreme-temperatures-in-the-workplace

10. Advisory, Conciliation and Arbitration Service (2023). Menopause at Work: Supporting Workers. Available at: https://www.acas.org.uk/menopause-at-work/supporting-staff-through-the-menopause

11. Equality and Human Rights Commission (2023). Menopause in the Workplace: Guidance for Employers. Available at: https://www.equalityhumanrights.com/guidance/menopause-workplace-guidance-employers

12. Chartered Institute of Personnel and Development (2023). Menopause in the Workplace: Employee Experiences in 2023. London: CIPD. Available at: https://www.cipd.org/globalassets/media/knowledge/knowledge-hub/reports/2023-pdfs/2023-menopause-report-8456.pdf

13. Chartered Institute of Personnel and Development (2023). The Menopause at Work: Guidance for People Managers. Available at: https://www.cipd.org/en/knowledge/guides/menopause-people-manager-guidance/

14. Chartered Institute of Personnel and Development / DWP Menopause Employment Champion (2023). CIPD and Helen Tomlinson: Menopause-Friendly Workplaces. Available at: https://www.cipd.org/en/about/press-releases/cipd-menopause-employment-champions-workplace/

15. Department for Work and Pensions (2025). Menopause in the Workplace: Literature Review. London: DWP. Available at: https://www.gov.uk/government/publications/menopause-in-the-workplace-literature-review/menopause-in-the-workplace-literature-review

16. House of Commons Women and Equalities Committee (2022). Menopause and the Workplace: First Report of Session 2022–23. HC 91. London: House of Commons. Available at: https://publications.parliament.uk/pa/cm5803/cmselect/cmwomeq/91/report.html

17. Gombert-Labedens M, Vesterdorf K, Fuller A, Maloney SK, Baker FC (2025). Effects of Menopause on Temperature Regulation. Temperature (Austin). PMID: 40330614. doi: 10.1080/23328940.2025.2484499. Free PMC article.

18. Freedman RR (2001). Physiology of Hot Flashes. American Journal of Human Biology, 13(4), 453–464. doi: 10.1002/ajhb.1078. PMID: 11400215.

19. Freedman RR (2005). Hot Flashes: Behavioral Treatments, Mechanisms, and Relation to Sleep. American Journal of Medicine, 118(12B), 124S–130S. doi: 10.1016/j.amjmed.2005.09.046.

20. Utian WH (2005). Psychosocial and Socioeconomic Burden of Vasomotor Symptoms in Menopause: A Comprehensive Review. Health and Quality of Life Outcomes, 3: 47. doi: 10.1186/1477-7525-3-47. PMID: 16083502. Free PMC article.

21. Pinkerton JV, Bhupathiraju SN, Bushmakin AG et al. (2023). Vasomotor Symptoms During Menopause: A Practical Guide on Current Treatments and Future Perspectives. Mayo Clinic Proceedings: Innovations, Quality & Outcomes. doi: 10.1016/j.mayocpiqo.2023.01.003. PMID: 36836495. Free PMC article: PMC9938702.

22. Hardy C, Griffiths A, Thorne E, Hunter MS (2019). Tackling the Taboo: Talking Menopause-Related Cognitive Complaints at Work. Journal of Psychosomatic Obstetrics and Gynaecology, 40(3), 225–231. doi: 10.1080/0167482X.2018.1449170. PMID: 29529914.

23. Hardy C, Hunter MS, Griffiths A (2018). Menopause Concerns Among Women in the Workplace: Prevalence, Seeking Help and Common Themes. Occupational Medicine, 68(8), 580–586. doi: 10.1093/occmed/kqy112.

24. Jack G, Riach K, Bariola E (2019). Temporality, Identity and Emotion in Organisational Menopause Research and Policy: A Discursive Analysis. Work, Employment and Society, 33(3), 454–470. doi: 10.1177/0950017018780420.

25. Faubion SS, Enders F, Kapoor E et al. (2023). Impact of Menopause Symptoms on Women in the Workplace. Mayo Clinic Proceedings, 98(6), 833–845. doi: 10.1016/j.mayocp.2023.02.025. PMID: 37137630.

26. Freeman EW, Sherif K (2007). Prevalence of Hot Flushes and Night Sweats Around the World: A Systematic Review. Climacteric, 10(3), 197–214. doi: 10.1080/13697130601181486.

27. NHS Confederation, CREATE Health Foundation and London Economics (2024). Women’s Health Economics: Investing in the 51%. Available at: https://www.nhsconfed.org/publications/womens-health-economics

Disclaimer: This article is for informational purposes only and does not constitute medical or legal advice. Phillipa Jacobs-Smith practises within the UKIHCA Scope of Practice as a Nutrition and Health Coach. Women experiencing menopause symptoms should seek guidance from their GP or a qualified healthcare professional. Employers should consult a qualified employment solicitor or HR professional for specific legal advice. All research cited is sourced from peer-reviewed publications, UK government documents, HSE guidance, and accredited professional bodies.