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Causes of presenteeism: why sick employees keep working

Camille Van Engelen · · 12 min read
Causes of presenteeism: why sick employees keep working

According to a 2025 study by NN, six out of ten employees keep working when they are sick. Presenteeism is not a matter of personal dedication, but the direct consequence of structural overload. Anyone who wants to grasp the organisational causes of presenteeism quickly runs into a stubborn blind spot: the behaviour remains completely invisible on the traditional absence calendar.

You’ll probably recognise the tension inside your own organisation. Official absence statistics look reassuring, yet effective productivity slips away and projects slow down without any identifiable medical reason. Meanwhile, you run the risk that loyal team members push themselves past their limits and later drop out for months with a severe burn-out.

In this article you’ll discover the hidden system factors driving presenteeism and learn how to make that signal objectively measurable inside teams. That way, you take targeted measures to prevent the costly leap from silent overwork to long-term absence in time.

Key takeaways

  • Presenteeism covers both physical and digital “logging in” with reduced capacity, which is why the phenomenon sits entirely outside traditional absence reports.
  • Discover how to expose the structural causes of presenteeism within three critical domains: organisational culture, work distribution and leadership style.
  • Get insight into the creeping loss of productivity and the way overload infects healthy colleagues with an increased workload as a result.
  • Learn how frequent, anonymous pulse surveys and operational behavioural data make early signals of exhaustion visible at the team level.
  • Replace a toxic attendance culture with output-oriented steering, backed by clear frameworks for disconnection and structural cover during absence.

Contents

What presenteeism is and why employees keep working when sick

Presenteeism arises the moment an employee shows up physically at the office or logs in from home while physical or mental complaints prevent normal performance. The phenomenon remains a blind spot for HR. Unlike classic sick leave, the employee is registered as active. A scientific overview of what presenteeism entails shows that this habit does not arise by chance, but through structural working conditions. Home working has lowered the threshold for keeping going: the physical commute drops away, so sick colleagues more often stay behind their screen. Without intervention, this mechanism erodes workforce availability. A well-designed absence and retention policy therefore requires organisations to look beyond the official sick notices.

The difference between visible absence and hidden presenteeism

Classic HR reports steer solely on registered absence. That focus paints a distorted picture of real capacity on the shop floor. According to 2024 research by Securex, an employee who is engaged in presenteeism works, on average, at only 70% of their normal capacity. This performance loss remains invisible in quarterly statistics, yet slows ongoing processes directly. Deadlines shift, the error margin rises and surrounding team members have to fill the operational gaps. Anyone who ignores presenteeism misses the early warning signals of structural departure.

The paradox of the engaged employee

It’s not disinterest, but excessive dedication, that drives employees to keep going when sick. Precisely the loyal and duty-driven staff display this behaviour most often:

  • Misplaced guilt: The fear that close colleagues will have to absorb extra tasks in an acute understaffing.
  • Boundless dutifulness: A professional identity that rests on constant availability and absolute deployability.
  • Lack of clear norms: Uncertainty about when rest is physiologically and organisationally necessary.

Without clear frameworks, this engagement turns into self-sabotage. The deeper causes of presenteeism therefore rarely lie in a lack of motivation, but in the prevailing team dynamic.

The main causes of presenteeism inside modern organisations

Working while sick is not an individual choice or medical coincidence. It’s an organisational symptom. When employees log in despite fever or mental exhaustion, they are responding to structural incentives inside the company system. Research by the IZA Institute of Labor Economics exposes the fundamental causes of presenteeism in the workplace . Three dominant domains drive this behaviour: the prevailing culture, work organisation, and the leadership style in use.

Organisational culture and the pressure of an attendance culture

Inside many organisations, an unwritten rule holds that physical or digital visibility equates to dedication. Managers reward response speed, so employees want to keep their status dot green. This digital attendance drive creates constant tension. Anyone who reports sick fears negative evaluations in promotion rounds or reorganisations. Without a transparent expectations framework around performance, a silent competition emerges: whoever holds out longest wins management’s trust. Illness thus becomes a taboo.

High workload and missing back-up structures

Work organisations permanently running on minimum personnel capacity force employees to work through illness. Project pipelines overflow and tasks pile up as soon as someone drops out. The main causes of presenteeism arise here out of pure necessity:

  • Missing back-up systems: No one is available to temporarily take over critical operational tasks.
  • Isolated knowledge: Individual employees manage crucial files alone, so absence brings projects to a standstill directly.
  • Piling workload: Being ill simply means having to work twice as hard on return.

To prevent workload tipping into structural departure, leaders have to redesign processes fundamentally. For a deeper dive, read this analysis of organisational change capacity to discover how teams stay resilient.

Leadership style and psychological safety

The behaviour of the line manager sets the norm. A team lead who ostentatiously sends emails from a sickbed sends a destructive signal: pushing on is mandatory. Without psychological safety, no one dares to flag physical or mental limits. Open communication about resilience is absent, so employees keep signals of exhaustion to themselves. Only when leaders themselves take rest when ill and actively encourage this behaviour does the implicit compulsion to keep functioning at reduced capacity disappear.

The real consequences of presenteeism for productivity and retention

The real damage of working through illness rarely reveals itself on the day itself. The effect piles up silently. Where an absent employee is replaceable, a reduced-capacity worker creates a cascade of operational delays. Errors creep into calculations, quality controls slacken and decision-making stalls. Healthy team members have to absorb tasks structurally to fill the gaps. This unbalanced load gnaws at team morale: engaged colleagues become frustrated by continued imbalance. Anyone who leaves the underlying organisational causes of presenteeism unaddressed risks loyal key staff eventually leaving because of persistent overload.

Quality loss and decision fatigue

Physical pain or mental exhaustion lowers cognitive sharpness. Employees lose their overview and suffer acute decision fatigue. In administrative processes, this leads to rework and missed deadlines. Within production, logistics and care, reduced alertness brings direct physical safety risks. The indirect costs of this drop in quality almost always exceed the wage cost of a day at home.

The escalation to chronic absence and burn-out

Pushing on structurally without physiological recovery systematically depletes the nervous system. Figures from insurer NN in 2025 show that 64% of workers who keep working when ill experience a harder recovery or a longer illness duration. For one in five, this leads directly to serious exhaustion or burn-out:

  • Phase 1: Compensation. The employee compensates for reduced focus by clocking longer hours.
  • Phase 2: Structural friction. Error rates rise and weekend recovery capacity falls short.
  • Phase 3: Total collapse. The body shuts down for good; what began as a mild complaint ends in months of absence.

The leap from quiet presence to chronic absence follows a predictable path. Reactive intervention at the moment of formal departure costs tens of thousands of euros in continued pay and replacement costs. An organisation that recognises presenteeism in time prevents a temporary capacity problem from tipping into a structural retention crisis.

How HR objectively detects the early signals of presenteeism

Waiting for the formal sick-leave notice means running behind the facts. Because presenteeism does not appear on traditional absence dashboards, HR has to install active measurement points to expose the underlying pressure. This calls for a structured four-step approach:

  • Step 1: Monitor subtle behavioural data. Look at structural overtime, late email activity and declining interaction during team meetings.
  • Step 2: Replace slow annual cycles. Annual employee surveys are snapshots. They miss acute workload spikes and seasonal overload.
  • Step 3: Use frequent pulse surveys. Continuously measure how teams experience their real workload and recovery capacity.
  • Step 4: Segment at the team level. Isolate patterns per department to see where friction arises before staff drop out.

By systematically combining these indicators, you make the organisational causes of presenteeism visible long before they escalate into long-term work incapacity.

Behavioural indicators on the physical and digital shop floor

Compensating behaviour reveals itself through operational patterns. Employees who are physically or mentally falling short log in earlier or reply to messages deep into the evening to catch up. In meetings, they withdraw: active input gives way to passive attendance. HR must train line managers not to interpret these behavioural changes as declining motivation, but as early signals of overload. An open conversation about priorities and feasibility takes the pressure off directly.

The importance of continuous measurement and reliable data

Traditional psychosocial audits via external advisers deliver thick reports but offer no real-time insight. By the time the results land on the table, staff are often already out. Continuous measurements close this gap. Here, elli offers a way forward by exposing the invisible tension between workload and deployability. With more than 800 validated questions in the Survey Library, the platform probes recovery need and operational friction in a targeted way. Results are only shown from fifteen respondents onwards, so strict anonymity is preserved. Employees therefore dare to say honestly when the load becomes untenable. Within 24 to 72 hours, HR has an operational dashboard with targeted segment analyses per department, without a heavy IT project.

Download the white paper on organisational change capacity and readiness

Structural interventions: from attendance drive to healthy productivity

You do not break the attendance drive with one-way communication about healthy habits. Organisations must revise their operational frameworks. Steer teams on concrete results rather than hours worked or online availability. Set clear rules around digital disconnection: no emails outside office hours and no obligation to be reachable during illness. Set up structural back-up systems so that tasks automatically pass to a colleague during absence. To map the underlying risks continuously, organisations increasingly opt for specialised absence analysis software that detects friction before it leads to formal departure.

Equipping line managers with steering insights

Direct line managers stand on the frontline. Yet they rarely have the right instruments to discuss overload objectively. Equip team leads, therefore, with specific team data:

  • Concrete team scores: Provide insight into perceived workload and recovery capacity without exposing individual answers.
  • Targeted action points: Offer handles to review priorities and temporarily pause non-urgent tasks.
  • Constructive conversation starters: Support line managers with targeted questions when tension inside a department is rising.

Once line managers have factual data, the conversation shifts from subjective assumptions to structural solutions.

How elli helps organisations manage hidden departure risks

elli measures and closes the gap between change, workload and workforce deployability through anonymous pulse surveys and continuous workforce analytics. For HR and absence leaders, the platform offers validated surveys that flag early indicators of workload and exhaustion at the team level, long before this becomes visible in formal sick-leave notices. Without consultants or a lengthy IT implementation, the first dashboard is live within 24 to 72 hours. Thanks to sharp segment analysis, elli identifies exactly which teams show the highest organisational causes of presenteeism. That way, you intervene in a targeted manner before silent overwork tips into long-term sickness absence.

Build a proactive policy against hidden departure

Presenteeism is not an individual matter, but a clear organisational signal. Anyone who removes the structural causes of presenteeism breaks the toxic attendance drive and prevents loyal staff from sliding into long-term departure. Clear agreements on digital disconnection and steering on tangible results form the foundation for this.

With continuous workforce analytics, you make creeping overload immediately discussable. elli provides the necessary insights for this. Thanks to more than 800 validated questions in the Survey Library, you signal capacity problems long before the first sick-leave notice follows. The platform is fully GDPR-compliant with anonymous reporting from fifteen respondents onwards. Your dashboard is operational within 24 to 72 hours, without an IT project.

Discover how elli exposes hidden absence risks early

Give team leads the right data today to steer in time. That way, your organisation stays resilient, sharp and optimally deployable.

Frequently asked questions

What is the main difference between presenteeism and absenteeism?

The fundamental difference lies in visibility on the staffing schedule. With absenteeism, an employee formally reports sick and HR records the absence. With presenteeism, the employee logs in physically or digitally despite physical or mental complaints that hinder normal performance. Absenteeism results in direct replacement costs, while presenteeism leads to invisible loss of capacity, delayed projects and an increased risk of later, chronic departure.

Why do employees keep working when they are sick?

The deeper causes of presenteeism lie mainly in workload, missing back-up structures and an implicit attendance culture. Employees keep going out of loyalty to teammates, because they fear tasks will pile up or because absence is seen as weakness inside the team. Fear of negative evaluations or job insecurity also forces people to log in, even when rest is physiologically necessary.

How much productivity does an organisation lose on average through presenteeism?

According to scientific research and benchmark data from Securex, a sick employee works, on average, at 70% of their normal capacity. That means a direct productivity loss of at least 30% per day. On top of that, indirect costs emerge through rework, delayed decision-making and overload of healthy colleagues who have to step in. As a result, the total costs of presenteeism operationally often run higher than registered short-term absence.

Can presenteeism be measured without violating employees’ privacy?

Yes, provided that organisations choose aggregated, anonymous workforce analytics. Software such as elli probes recovery need and workload through short, validated pulse surveys without showing individual answers. Results only become visible from fifteen respondents per segment onwards. This preserves individual privacy in line with strict GDPR standards, while line managers still get direct insight into trends and risk zones at the team level.

What role does remote working play in the emergence of presenteeism?

Remote working has strongly lowered the threshold for pushing on when sick. Without the commute, employees more quickly feel the social pressure to log in from home with mild or moderate complaints. This digital variant of the causes of presenteeism is reinforced by constant availability and visible status dots in collaboration tools. As a result, the line between recovery time and effective working time blurs considerably.

What measures can HR take directly against an attendance culture?

HR must steer on concrete goals rather than hours worked or online availability. Introduce formal agreements on the right to disconnection and prohibit communication during sick days. Ensure clear substitution protocols so projects do not stall during absence. In addition, an active role-model function is crucial: instruct team leads to go fully offline themselves during illness and to explicitly encourage this behaviour inside their teams.

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