I keep seeing the same pattern play out inside organisations: we invest heavily in benefits, insurance, and wellbeing programmes, yet the people those systems are designed for often don’t fully understand how to use them. That gap is costing far more than most leadership teams realise.
Up to 61% of England’s working-age population struggles with routine health information, particularly where numeracy is involved. More strikingly, this limitation correlates more strongly with poor health outcomes than education, deprivation, age, or ethnicity. When I look at this through an employer lens, the implication is straightforward: if your workforce doesn’t understand health information, you will pay for it, directly and repeatedly, through long-term claims.
What I’ve come to believe is this: organisations that deliberately invest in improving workforce health literacy aren’t just doing the right thing. They’re building a measurable financial advantage.
The Rising Cost of Health Illiteracy
The numbers alone should make this a boardroom issue. UK sickness absence has climbed in recent years, and that’s well documented. The Health and Safety Executive reports 964,000 cases of work-related stress, depression, or anxiety, alongside 511,000 musculoskeletal cases in 2024–2025.
This isn’t abstract. It feeds directly into insurance exposure. Long-term absences push up group income protection claims and health premiums. According to the Office for National Statistics, employees with long-term conditions have a 4.0% sickness absence rate compared to 1.0% for others.
Where health literacy comes in is upstream. When people don’t understand symptoms, risk factors, or treatment plans, they’re less likely to manage conditions effectively. That leads to higher healthcare utilisation and, ultimately, higher costs. A systematic review confirms a consistent negative relationship between health literacy and healthcare expenditure.
In practice, I see this as a predictable cost driver - one that becomes even more pronounced as NHS waiting times push more demand into private insurance pathways.
Defining the Knowledge Premium
Health literacy is often described as the ability to access, understand, and use health information to make decisions. That definition is accurate but operationally, it undersells its impact.
In a workforce context, health literacy is what determines whether an employee acts early or waits until a condition escalates into a claim.
When people understand risks, they’re far more likely to intervene early. And early intervention is where cost is either contained or allowed to compound.
Data from Vitality illustrates this clearly: clinician-led health checks identify at-risk individuals four times more effectively than self-reported data. That difference isn’t marginal; it’s the gap between prevention and claim.
This is where the idea of a “knowledge premium” becomes tangible. AXA Health estimates that increasing adoption of insurance-linked health solutions by 25% could generate £750 million in annual economic benefits by reducing inactivity. Analyses from Deloitte and others link these programmes to lower absenteeism and turnover, but when you layer in health literacy, the effect strengthens through improved self-management.
From a finance perspective, this shows up as more stable premiums. From a risk standpoint, it reduces long-tail liabilities tied to unmanaged chronic conditions.
Evidence Linking Literacy to Claims Reduction
The academic evidence is aligned with what many of us are observing in practice. Higher health literacy is associated with better chronic disease management, stronger medication adherence, and improved self-care, all of which directly reduce the likelihood and duration of long-term claims.
At a workforce level, this translates into fewer cases of work-related ill health. The HSE reports 1.9 million such cases annually, many of which are preventable through earlier, better-informed action.
CIPD’s 2025 Health and Wellbeing at Work report shows that 89% of organisations now prioritise mental health, with more holistic strategies linked to reduced absence rates. Public Health England’s earlier analysis reinforces the point: populations with lower health literacy incur higher costs due to unmanaged conditions.
From my own experience working with organisations embedding literacy into their health strategies, the shift is noticeable. Claims patterns begin to flatten. Premium volatility reduces. This aligns with broader WHO-backed models suggesting informed populations can reduce healthcare expenditure by 10–20%, even if UK-specific granular data is still developing.
Implications for Leadership Teams
For HR leaders, this is already showing up as a retention and productivity issue. With absence averaging 9.4 days, and mental health as a leading driver, low health literacy is quietly amplifying the problem.
Finance teams see it differently, but just as clearly. ONS data shows long-term conditions quadruple absence rates. That feeds directly into actuarial assumptions, reserves, and premium negotiations.
Risk leaders, meanwhile, are looking at upstream mitigation. When 7.1 million working days are lost to musculoskeletal issues alone, the question becomes: what could have been prevented earlier?
The commercial implications are shifting as well. Insurers are increasingly rewarding proactive employers, particularly those investing in early detection and prevention. Vitality’s screening programmes are a good example, identifying risks before they materialise into claims.
The inverse is also true. Organisations that ignore health literacy will continue to absorb rising premiums and avoidable claims costs and that’s something that becomes harder to justify in a more economically constrained 2026 environment.
Actionable Strategies for Implementation
Start with a baseline. Use validated tools, such as those from Health Education England, to assess workforce health literacy and identify high-risk groups, particularly roles with elevated musculoskeletal exposure.
Introduce structured, clinician-led health checks annually. The evidence is clear: these are significantly more effective than self-reporting and create a pathway for early, personalised intervention.
Equip managers to communicate health information effectively. CIPD guidance highlights the role of line managers in reducing stress-related absence through better conversations and support structures.
Integrate health literacy into your insurance design. Partnerships with providers like AXA or BUPA can align preventive tools with financial incentives, contributing to the £750 million savings potential identified at a macro level.
Finally, measure it properly. Track claims data before and after interventions, using ONS and HSE benchmarks to quantify impact and justify scaling.
Looking Ahead
The UK is already dealing with 1.9 million cases of work-related ill health. That number doesn’t come down through reactive spend; it comes down through earlier, better decisions made by a more informed workforce.
Health literacy isn’t a “nice to have” sitting under wellbeing. It’s a lever that directly affects claims, premiums, and long-term cost exposure.
If you’re sitting on a finance, risk, or HR leadership team, the question isn’t whether this matters. It’s whether you’re prepared to quantify and act on it before your next renewal cycle forces the issue.
Run the pilot. Measure the impact. Then scale it properly.
Because the organisations that understand their knowledge premium and invest in it, won’t just improve health outcomes. They’ll outpace everyone else on cost.