Sleep seems free, but for millions of adults every night’s rest carries a silent price tag that companies and taxpayers ultimately pay.
Across the UK, the US and other wealthy countries, a common yet often ignored sleep disorder is draining productivity, straining health systems and nudging accident rates higher, all while remaining largely undiagnosed.
Sleep apnoea: a medical problem with an economic footprint
Obstructive sleep apnoea (OSA) happens when the upper airway repeatedly collapses during sleep. Breathing briefly stops or becomes very shallow. The brain responds with tiny, almost invisible awakenings to reopen the airway.
These events can occur dozens of times per hour. The sleeper rarely remembers them, but their night is broken into fragments. Deep, restorative sleep becomes scarce.
Classic signs include loud snoring, choking sounds at night and intense sleepiness during the day. Many people also report morning headaches, irritability and trouble focusing. Over time, OSA is linked with high blood pressure, heart attacks and strokes.
Behind every yawning colleague or drowsy driver, there is a small chance that untreated sleep apnoea is quietly at work.
For employers, that constant fatigue matters. Staff with untreated OSA are more likely to make mistakes, miss deadlines and struggle with complex tasks. For governments, the disorder feeds into higher rates of long‑term illness and disability, and greater demand for hospital care.
Billions lost in the UK and US alone
Recent analyses from researchers at University College London and others have tried to put a price on this hidden problem. By combining survey data from more than 4,000 adults in the UK and US with information on sick leave and on‑the‑job performance, they estimated that obstructive sleep apnoea costs around €137 billion a year across those two economies.
That figure mainly reflects lost productivity. It does not fully include the cost of treating heart disease or strokes made more likely by OSA. It also leaves out many road and workplace accidents where drowsiness is a contributing factor but never recorded as such.
Even the headline numbers are likely an underestimate, because most cases are never diagnosed and rarely appear in official statistics.
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In high‑income European countries, a separate assessment published in a neurology journal suggested total annual costs of OSA reach about €184 billion. That makes it one of the most expensive sleep disorders on the continent.
The hidden twin problems: absenteeism and presenteeism
Economists looking at OSA often divide its impact on work into two categories:
- Absenteeism: employees staying home sick because they feel exhausted or unwell.
- Presenteeism: employees turning up for work but operating at a fraction of their capacity.
Presenteeism is harder to measure but may be more damaging. A worker who is constantly tired might be physically present yet slower, less accurate and more prone to risky shortcuts. In safety‑critical jobs, such as driving or construction, that reduced alertness carries obvious dangers.
A widespread condition that few people know they have
Obstructive sleep apnoea is far from rare. European estimates suggest about 18% of adults meet the criteria for OSA or have strong symptoms pointing in that direction. That is nearly one in five people.
Yet up to 85% of those affected have never been formally diagnosed. Many blame their symptoms on stress, long working hours or parenting young children. Others see snoring as an annoyance, not a health warning.
Family members often notice the signs first: loud, irregular snoring, pauses in breathing, or a partner who wakes up gasping. Patients themselves may wake feeling unrefreshed despite what looks like a full night in bed.
OSA sits in a blind spot between sleep medicine, cardiology and occupational health, so its true scale often slips through the cracks.
This lack of diagnosis has consequences. Without treatment, blood pressure may creep higher. Weight can be harder to manage. Mood disorders such as depression and anxiety may worsen. The person’s performance at work can decline slowly enough that no one joins the dots.
Why so many people never get tested
Several barriers keep adults from seeking help for possible sleep apnoea:
- They assume constant tiredness is normal or a sign of ageing.
- They feel embarrassed about snoring or weight issues.
- They fear that admitting sleep problems could affect their job or driving licence.
- They do not realise simple home sleep tests exist in many countries.
Some employees also worry that mentioning OSA might be seen as a weakness or trigger questions about their ability to work night shifts or drive for a living. That fear can delay diagnosis for years.
Treatment works, but adherence is a challenge
The standard treatment for moderate to severe OSA is continuous positive airway pressure, or CPAP. The patient wears a mask connected to a small bedside machine that gently blows air into the throat, keeping the airway open.
When used consistently, CPAP can transform sleep quality in a matter of nights. People often describe feeling more alert, calmer and more focused at work. Blood pressure tends to improve, and the risk of cardiovascular events drops over time.
For health systems, every patient who sticks with CPAP is one step away from an expensive heart attack or stroke that never happens.
Yet many users struggle with CPAP. Some find the mask claustrophobic. Others are disturbed by noise, air leaks or dry mouth. Poor initial support can lead to the device ending up in a cupboard.
Alternatives exist. Custom dental devices that bring the lower jaw slightly forward can help in mild to moderate cases. Weight loss, especially in people with obesity, often reduces the severity of OSA. In selected patients, surgical options to open the airway may be considered.
| Approach | Main goal | Suited for |
|---|---|---|
| CPAP | Keep airway open with gentle air pressure | Moderate to severe OSA, most patients |
| Dental device | Move jaw forward to widen airway | Mild to moderate OSA, CPAP‑intolerant |
| Weight loss | Reduce tissue pressure on throat | OSA with excess weight |
| Surgery | Reshape or stiffen airway structures | Selected cases after specialist review |
An overlooked target for health and economic policy
For governments wrestling with ageing populations and stretched health budgets, tackling sleep apnoea offers a relatively clear return on investment. Earlier diagnosis means fewer traffic collisions linked to drowsy driving, fewer long sick leaves and a reduced burden of chronic disease.
Workplace policies also matter. Encouraging staff to talk about sleep problems, training managers to recognise red flags and providing access to occupational health assessments can all shift the culture. For shift workers and professional drivers, targeted screening programmes have already been introduced in some regions.
Every untreated OSA case is a missed opportunity: for better health, safer roads and a more efficient workforce.
Insurers and large employers are starting to notice. Some US health plans now flag people at high risk of OSA based on weight, blood pressure and questionnaire scores, then offer home sleep testing. Early data suggests that those who start treatment use fewer healthcare resources later on.
Key terms and what they really mean for daily life
Two technical terms often appear in discussions of sleep apnoea. The first is the “apnoea–hypopnoea index” (AHI). This counts how many times per hour a person stops breathing (apnoea) or breathes too shallowly (hypopnoea) during sleep.
A higher AHI means more severe OSA. But from a practical standpoint, what matters to many patients is how they feel during the day: whether they can stay awake in meetings, focus on a long drive or follow complex conversations without mental fog.
The second term is “oxygen desaturation”. During each breathing pause, blood oxygen may drop. Repeated desaturations night after night strain the cardiovascular system. That helps explain why untreated OSA raises the risk of heart disease even in people who seem otherwise healthy.
Consider a mid‑career office worker who snores loudly, wakes up unrefreshed and drinks multiple coffees just to get through the afternoon. Over a decade, they might move less, gain weight, see their blood pressure inch up and struggle more at work. Without anyone naming OSA, the combined effect becomes a slow slide into poorer health and lower productivity.
On the flip side, catching OSA early can set off a positive chain reaction. Better sleep often leads to more energy for exercise, improved mood, sharper thinking and stronger job performance. For Western economies counting every lost hour of labour, that change in trajectory matters as much as any new pill or operation.