Managing Sick Leave in the Netherlands: When Trust Breaks Down and What Small Employers Must Know

How Dutch Sick Leave Law Works: Medical Protection vs. Contractual Honesty

Dutch employment law protects sick employees aggressively. You can’t dismiss someone simply because they’re ill. The company doctor’s medical assessment is binding. You must continue paying wages for up to two years and follow a structured reintegration process.

The Amsterdam ruling clarified something critical.

The obligation to communicate honestly about capacity boundaries is not a medical obligation. It’s contractual.

The employee in this case was medically classified as fully incapacitated. The court didn’t override the assessment. The dismissal wasn’t based on challenging the diagnosis.

The dismissal was based on the gap between what the employee told the company doctor he could do and what he was observed doing.

The court focused on “belastbaarheid,” the practical capacity to perform work. A sick employee isn’t prohibited from all activity. They can drive to medical appointments. They can perform light household tasks. They’re able to maintain a social life.

What they’re not able to do is claim full incapacity while performing work elsewhere without explaining why.

The ruling stated clearly: when an employer observes behavior inconsistent with stated limitations and requests clarification, the employee must provide a convincing explanation. Silence or evasion breaks trust.

Key Point: Medical incapacity and contractual honesty are separate obligations. Employees must truthfully communicate their functional capacity to their employer, even when medically certified as incapacitated.

What the 2026 Court Ruling Actually Says (and Doesn’t Say)

The ruling is not a license to surveil sick employees or challenge medical judgments.

The court did not say:

• Employers can override the company doctor’s assessments.
• Sick employees must stay home at all times.
• Driving a car or performing light activity justifies dismissal.
• Employers can investigate employees without cause.

What the court did emphasize:

The employee stated he was unable to perform any work. He then worked for another company and engaged in activities that required physical capacity. When asked to explain the contradiction, he provided no credible answer.

The failure to communicate honestly about capacity destroyed the contractual basis of trust.

For small employers, this distinction is critical. You’re not entitled to challenge medical opinions. You’re entitled to expect honest discussion about what your employee can and cannot do.

Key Point: Employers can’t override medical opinions, but they have the right to expect honest discussion of functional capacity. The court upheld dismissal based on contradictory behavior, not medical disagreement.

Why Transition Payments Are Guaranteed (Even With Justified Dismissal)

The Amsterdam employer won the legal argument. The dismissal was upheld.

The employer still paid over €12,000 in statutory transition payment (transitievergoeding).

This is the asymmetric risk structure of Dutch employment law. Financial obligations stay in place even when employee behavior justifies immediate dismissal.

The transition payment is calculated based on tenure and salary. For 2026, the maximum is €102,000 gross. For small businesses operating on tight margins, this creates dual exposure: the operational cost of managing long-term illness and the guaranteed financial cost of separation.

The exposure increased in 2026.

As of July 1, 2026, only small businesses with fewer than 25 employees remain eligible for compensation of the transition payment from the UWV after two years of employee sick leave. Larger employers lost this compensation entirely.

For micro and small businesses, the transition payment is now a direct, unrecoverable cost. You must factor this into operational budgets from the day sick leave begins.

Key Point: Transition payments up to €102,000 apply regardless of dismissal justification. Since July 2026, only businesses with fewer than 25 employees have qualified for UWV compensation after 2 years. Budget for this cost from day one of sick leave.

What Is a Reintegration Plan and Why Does It Protect You

Dutch law requires employers to create a formal reintegration plan (plan van aanpak) with the sick employee by the 8th week of illness. Progress meetings must occur every 6 weeks and be documented.

Most small employers treat this as compliance paperwork.

Wrong.

The reintegration plan is a binding framework for structuring expectations and obligations during sick leave.

For small businesses without HR departments, this document becomes your primary defense in the event of disputes. Document these items explicitly:

• What activities is the employee able to perform
• What activities the employee isn’t able to perform
• What alternative or modified work is possible
• What communication regulations must be followed?
• What triggers require immediate notification

The Amsterdam case demonstrates why this matters. The employer had documented the employee’s stated limitations. When observed behavior contradicted those statements, the employer had written proof of the inconsistency.

Documentation was decisive.

Without it, the case becomes a credibility contest. With it, the case becomes a matter of record.

Key Point: The reintegration plan (plan van aanpak) is not compliance paperwork. It creates a binding written record of employee capacity that becomes decisive evidence if disputes arise.

How to Document Sick Leave to Avoid Financial Penalties

The UWV assessment framework obliges employers to submit complete reintegration files, including:

• Problem analysis (probleemanalyse)
• Plan of action (plan van aanpak)
• First-year evaluation (eerstejaarsevaluatie)
• Current company physician assessment (actueel oordeel bedrijfsarts)
• Final evaluation (eindevaluatie)

Missing or incomplete documentation triggers financial penalties. The UWV can impose a wage sanction (loonsanctie), requiring you to continue paying the employee’s salary for up to one additional year beyond the standard two-year period.

For small employers, this transforms documentation from an administrative burden into financial protection.

The rule is simple: if you can’t prove you followed the process, you pay the penalty.

In the Amsterdam case, the employer’s documented attempts to obtain clarification and the employee’s failure to respond served as the basis for the ruling. The court didn’t rely on speculation or interpretation. The court relied on the written record.

For micro businesses, this means creating simple documentation systems early:

• Log all conversations about capacity and limitations.
• Request written confirmation of what the employee is able to do and what they’re not able to do
• Record any observed inconsistencies immediately.
• Request clarification in writing when doubts arise.
• Keep all correspondence in a single file.

You don’t need sophisticated HR software. You need discipline.

Key Point: Missing documentation triggers UWV wage sanctions that require up to 1 additional year of salary payments. Simple, disciplined logging of conversations and capacity statements provides financial protection.

GDPR Rules: What You Can and Cannot Ask Sick Employees

Dutch GDPR implementation strictly prohibits employers from recording or processing health data about sick employees.

You can’t ask:

• What the medical diagnosis is
• What treatment is the employee receiving
• What medications are they taking
• What their prognosis is

Even if the employee volunteers this information, you cannot record it. The Autoriteit Persoonsgegevens considers such consent inherently non-voluntary due to the financial dependency relationship.

Only the occupational health and safety service or company doctor is legally permitted to assess, record, and communicate medical capacity information.

What you can ask:

• What work activities the employee is able to perform
• What work activities is the employee unable to perform
• What modifications would enable partial work?
• What is the planned timeline for capacity changes is

The distinction is critical. You’re entitled to know functional capacity for work purposes. You’re not entitled to know medical details.

The Amsterdam case stayed within this boundary. The employer didn’t challenge the medical diagnosis. The employer challenged the consistency between the stated functional capacity and observed behavior.

Key Point: You’re entitled to know functional work capacity, not medical details. Ask what activities employees can perform, never about diagnoses or treatment. This protects you from GDPR violations.

In What Way Strategic Sick Leave Timing Creates Legal Traps for Employers

Dutch employment law has a structural vulnerability.

If an employee reports sick after a UWV dismissal permit is refused but before you file a petition with the Sub-District Court, the prohibition on termination during illness applies and blocks dissolution proceedings.

The Dutch Supreme Court’s Advocate-General confirmed that employees reporting sick strategically must still receive full protection. You can only counter this by requesting a UWV expert opinion to verify legitimate incapacity.

For small employers, this creates a timing trap. The window between dismissal permit refusal and court filing becomes a period of maximum vulnerability.

The control point is speed. If you anticipate dismissal proceedings, prepare documentation immediately. Don’t delay filing.

Key Point: Employees who report sick between the UWV dismissal permit refusal and court filing gain automatic protection. Counter this by requesting UWV specialist opinions and filing documentation without delay.

Why Sick Leave Management Must Be Proactive, Not Reactive

In 2023, just over half of all employees in the Netherlands reported calling in sick at least once in the last 12 months.

Sick leave is a routine operational reality, not an exceptional event.

For small businesses, sick leave management can’t be reactive. Build organized processes.

Businesses doing this well don’t wait for illness to occur. They establish explicit protocols before hiring:

• Define communication expectations in employment contracts.
• Clarify what constitutes acceptable notification.
• Establish documentation standards from day one.
• Make reintegration responsibilities explicit upfront.

The Amsterdam case demonstrates what happens when expectations are unclear. The employee believed his behavior was acceptable. The employer believed it was not. The gap created conflict.

Clear upfront contracting reduces that gap.

Key Point: Over half of Dutch employees call in sick annually. Treat sick leave as a routine operational reality requiring systematic protocols developed before illness occurs, not reactive crisis management.

Can Sick Employees Work for Other Companies? What You Need to Know

One pattern emerged from the Amsterdam ruling: the employee’s failure to disclose that he could perform light work for another employer was decisive.

Dutch law doesn’t prohibit sick employees from working elsewhere if they are able to do so. But an honest discussion about capacity is required.

For small employers, this creates a contractual opportunity.

You can incorporate explicit language in employment contracts requiring employees to:

• Notify you immediately if they perform work during sick leave.
• Clarify what activities they’re able to perform for others but claim they’re not able to perform for you.
• Explain any external work arrangements during the reintegration process.

This isn’t about surveillance. This is about clarity.

If an employee is able to perform light administrative work for another company, the same capacity might enable modified work for you. The reintegration obligation requires that this possibility be explored.

The Amsterdam employee’s failure to disclose external work prevented that exploration. The court found that omission to be a breach of good faith.

Key Point: Dutch law permits sick employees to work elsewhere if capacity allows, but requires honest disclosure. Add explicit notification requirements in contracts to prevent capacity contradictions.

6 Controls Small Employers Must Install Now

The Amsterdam ruling doesn’t change the law. It clarifies how courts balance employee protection and employer expectations.

The operational takeaway is structural:

Sick leave management isn’t purely medical. It’s contractual. The quality of communication, documentation, and transparency determines whether the relationship survives long-term illness.

Install these controls before the next sick leave occurs:

1. Clarify communication expectations in contracts

Add explicit language requiring employees to notify you immediately if they perform work during sick leave, whether paid or unpaid. Make clear what capacity to work elsewhere triggers: a conversation about modified work for you.

2. Document the reintegration plan accurately

Don’t treat the plan van aanpak as paperwork. Use it to create a written record of what the employee can and cannot do. Request written confirmation from the employee. Update every 6 weeks.

3. Log all conversations about capacity

Keep a simple file with dates, topics, and outcomes of every conversation about the employee’s limitations. If you observe behavior inconsistent with stated capacity, document it immediately and request clarification in writing.

4. Request UWV specialist opinions early if doubts arise

If you suspect inconsistencies, don’t wait. Request a UWV expert assessment. The cost is lower compared to extended wage payments for fraudulent claims.

5. Budget for the transition payment from day one

The transition payment is guaranteed. For businesses with fewer than 25 employees, you can recover this from UWV after 2 years. But you must pay upfront. Factor this into your financial planning when sick leave begins.

6. Separate medical privacy from functional capacity

Never ask about diagnoses or treatment. Always ask about what the employee is able to do. Frame questions around work activities, not health conditions.

Structure Is What Remains If Trust Breaks Down

The Amsterdam case didn’t pit employer against employee. The ruling clarified the boundary between legitimate illness protection and behavioral accountability.

Most sick leave is legitimate. Most employees want to return to work. Most reintegration processes succeed when communication is honest, and structure is well-defined.

But once trust breaks down, structure is what remains.

For small employers in the Netherlands, the cost of unclear expectations is guaranteed: prolonged wage payments, transition payments, potential sanctions, and operational disruption.

The cost of a clear structure is minimal: explicit contracts, documented conversations, and disciplined reintegration protocols.

If you can’t prove the process, you pay the penalty. If you can’t prove the communication breakdown, you lose the dismissal case.

The system doesn’t read intentions. It reads proof.

Build the controls now. Save the cost later.

Frequently Asked Questions About Sick Leave Management in the Netherlands

Can I dismiss an employee who is on sick leave in the Netherlands?

You can’t dismiss someone solely because they’re ill. The medical assessment is binding. You can only dismiss if the employee’s behavior contradicts their stated capacity and they fail to provide convincing explanations when asked. Even then, you still owe transition payments.

What is the transition payment (transitievergoeding) and who pays it?

The transition payment is a statutory severance payment calculated on tenure and salary, up to €102,000 gross in 2026. You pay it even with justified dismissal. Businesses with fewer than 25 employees recover it from UWV after two years of sick leave, but must pay upfront.

What is a reintegration plan (plan van aanpak) and when do I need one?

Dutch law requires a formal reintegration plan by week 8 of sick leave, with progress meetings every 6 weeks. This document structures employee capacity expectations and communication policies and serves as decisive evidence if disputes arise. It’s not compliance paperwork, it’s operational protection.

What questions am I allowed to ask a sick employee under GDPR?

You can’t ask about diagnoses, treatment, medications, or prognosis. You can ask what work activities the employee can perform and which they cannot, what modifications enable partial work, and the foreseen timelines for capacity changes. Focus on functional capacity, not medical details.

What happens if I don’t document the reintegration process correctly?

The UWV can impose a wage sanction (loonsanctie) requiring you to pay the employee’s salary for up to one additional year beyond the standard two-year period. Missing documentation triggers financial penalties, transforming documentation from a burden into protection.

Can a sick employee work for another company while on sick leave from my company?

Dutch law permits sick employees to work elsewhere if their capacity allows. They must communicate honestly about this capacity. If they’re able to perform work for others, you’re entitled to explore whether the same capacity enables modified work for you.

What should I do if I suspect an employee is misrepresenting their capacity?

Document observed inconsistencies immediately. Request clarification in writing. If doubts persist, request a UWV expert opinion to verify the legitimacy of the incapacity. Keep written records of all attempts to seek an explanation. The court relies on documentation, not speculation.

How do I protect my business from strategic sick leave during dismissal proceedings?

If an employee reports sick after a UWV dismissal permit refusal but before court filing, the prohibition on termination during illness blocks dissolution proceedings. Protect yourself by preparing documentation immediately when anticipating dismissal and filing without delay. Speed is the control point.

Key Takeaways: Managing Sick Leave in the Netherlands

• Transition payments are guaranteed costs. Even justified dismissals trigger payments up to 102,000. Only businesses with fewer than 25 employees qualify for UWV compensation after two years. Budget for this from day one of sick leave.
• Honest communication is a contractual obligation. Medical incapacity and behavioral honesty are separate. Employees must truthfully communicate functional capacity. Contradictions between stated limitations and observed behavior justify dismissal if unexplained.
• Documentation determines outcomes. Courts rely on written records, not intentions. Reintegration plans, capacity logs, and clarification requests become decisive evidence. Missing documentation triggers wage sanctions that require up to 1 additional year of salary payments.
• Privacy boundaries are strict yet clear. Never ask about diagnoses or treatment. Always ask about functional work capacity. This distinction protects you from GDPR violations while guaranteeing operational clarity.
• Sick leave is routine, not exceptional. Over half of Dutch employees call in sick annually. Proactive protocols developed before hiring outperform reactive crisis management. Clear contracts reduce downstream disputes.
• Structure protects both sides. If trust breaks down, explicit contracts, documented conversations, and disciplined protocols become the framework determining whether relationships survive. The system reads proof, not intentions.
• Tactical timing creates vulnerability. Employees who report sick between the refusal of a dismissal permit and the filing of a court action gain automatic protection. Counter this with immediate documentation preparation and filing.