The Proportional Representation Principle or Seniority Principle: Which applies to redundancies in Eindhoven?

Reflection principle or seniority principle?

What is the difference between the reflection principle and the seniority principle in a reorganisation? We explain both terms below.

The reflection principle or the seniority principle: which applies? Is your company in Eindhoven or the Brainport region facing a reorganisation, and are you wondering on what basis your employer decides who must leave? The reflection principle (afspiegelingsbeginsel) is the legally required method in the Netherlands for this purpose and has long since replaced the former seniority principle (anciënniteitsbeginsel). Nevertheless, there is still a great deal of misunderstanding surrounding both concepts, and that can affect your legal position.

From seniority to the reflection principle

Until 2006, the so-called seniority principle determined the order of selection in collective dismissal. That method was straightforward: employees who had been in service for the shortest time were the first to be considered for dismissal. This principle is also known as 'last in, first out'. The drawback was that younger employees were structurally disadvantaged, regardless of their age group or proportional contribution to the company.

Since 1 March 2006, the reflection principle has replaced this system. Its central aim has been to keep the age composition within a job category as equal as possible before and after a round of dismissals. This counteracted arbitrary treatment based on age, but the system also became considerably more complex at the same time.

How the reflection principle works in practice

In a reorganisation where positions are eliminated, your employer first looks at whether any external workers are employed in the relevant job category. Agency workers, self-employed contractors, and other hired staff are the first to go, followed by employees who have reached the state pension age (AOW) and those on a fixed-term contract that expires no later than 26 weeks after the UWV decision. Only after that are permanent employees brought into the reflection process.

All employees in a category of interchangeable roles are then divided into five age groups: 15–25 years, 25–35 years, 35–45 years, 45–55 years, and 55 years and over. For each age group, a calculation is made of how many employees must go in order to maintain the proportion. Within each age group, a remnant of the old principle then applies: the employee with the shortest length of service is the first to be considered. Seniority therefore still plays a role, but only as a tiebreaker within an age group, not as the sole criterion.

Interchangeable and unique roles

The reflection principle applies exclusively to interchangeable roles. Roles are interchangeable if they are comparable in terms of content, required knowledge and competencies, level, and remuneration. If your role has a unique character — meaning that you are the only person carrying out these duties — your position is automatically eliminated as soon as that role disappears. In that case, no reflection process is required at all. This is an important distinction that regularly gives rise to dispute in practice.

When your employer is permitted to deviate

The law provides for a limited number of situations in which strict application of the reflection principle may be set aside. Please note: these exceptions are subject to strict conditions and must always be properly substantiated to the UWV.

• Onmisbaarheid: If an employee possesses such specialist knowledge or skills that dismissal would seriously harm the business, they may be excluded from the mirror-image principle. The employer must demonstrate this concretely and objectively.
• Arbeidsbeperking: An employee with a work-related disability may in certain circumstances be excluded from the mirror-image principle in order to protect employment for this group.
• Talentenregeling: Under Article 16 of the Dismissal Regulations, employers may set aside a maximum of 10% of employees within an interchangeable job category, provided this is explicitly stipulated in a collective labour agreement or ministerial regulation. This exception applies only to above-average performing employees and must be transparent to all staff.
• Appraisal Committee If a collective labour agreement designates an independent dismissal committee to assess cases in place of the UWV, that collective labour agreement may contain different rules regarding the order of dismissal.

What this means for you in Eindhoven

In the Eindhoven area and the wider Brainport region, many people work in technical and knowledge-intensive roles. It is precisely in that environment that we regularly see disputes about whether functions are truly interchangeable, whether an employee is indispensable, and whether the talent scheme has been applied correctly. In large-scale reorganisations — including those at well-known regional employers — an error in the mirror-image principle is far from uncommon. The UWV assesses the application of the principle on its merits and may refuse a dismissal permit if the calculation is incorrect.

Practical points to check immediately upon receiving a notice of dismissal:

• Verify whether your role has been correctly classified as interchangeable with those of your colleagues.
• Request the full mirror-image calculation and the reference date used.
• Check whether any external workers in your job category had already left before the mirror-image calculation was carried out.
• Review the applicable collective labour agreement to see whether any exceptions or a collective labour agreement committee have been established.
• Verify whether the age groups have been determined correctly and whether the order of dismissal within your group is accurate.
• Check whether a redeployment obligation applies and whether your employer is genuinely complying with it.

For further background information on your rights in a broader reorganisation context, please also read our page on Reorganisation and Redundancy in Eindhoven.

Assistance with the reflection principle or seniority principle

An error in the mirror-image principle has serious consequences: for your job, your income, and your future. At Arbeidsjurist Eindhoven, we know the local labour market and understand precisely where employers in the region go wrong when applying this complex system. We scrutinise the mirror-image calculation carefully, assess whether your role has been correctly classified, and advise you on the next steps — whether that is lodging an objection with the UWV or bringing proceedings before the subdistrict court.

Would you like to know whether the order of dismissal in your situation is correct? Please feel free to contact us. We are happy to think through your options with you.

Frequently asked questions

Does the seniority principle still apply to dismissal in the Netherlands?

No. The seniority principle — under which the employee with the shortest length of service was dismissed first — was replaced by the proportional selection principle (afspiegelingsbeginsel) on 1 March 2006. Seniority does still play a limited role, however: within each age group, length of service determines who is first to be considered for dismissal.

How do I know if my employer has correctly applied the mirroring principle?

You are entitled to see the proportional selection calculation. Check whether your role has been correctly classified as interchangeable, whether the five age groups have been properly defined, whether the reference date is correct, and whether external workers had already left before the calculation was made. If in doubt, it is advisable to have an employment lawyer review the calculation.

Does the proportional selection principle also apply if I have a unique role?

No. If your role is unique — meaning that you are the only person performing that work — your position is automatically discontinued in a reorganisation and proportional selection does not need to be applied. Disputes about what is 'interchangeable' or 'unique' arise regularly in practice.

Can a collective labour agreement contain alternative dismissal rules instead of the proportional selection principle?

Yes, but only under strict conditions. If the collective labour agreement designates an independent and impartial CLA committee to assess the dismissal application, that agreement may include different rules on the order of dismissal. In that case, UWV does not assess the proportional selection; instead, the CLA committee does so in its place.

What can I do if I suspect that the proportional selection principle has been applied incorrectly?

If you disagree with the order of dismissal, you can request the proportional selection calculation and have it reviewed by an employment lawyer. If UWV has already granted a dismissal permit, there are options to challenge this. Act quickly: strict time limits apply. If in doubt, contact a specialist as soon as possible.

We are happy to think along with you. For advice tailored to your situation, we would be glad to talk. No rights can be derived from the content of this page and it may contain inaccuracies.