Dutch employment contract: rules and clauses

A Dutch employment contract comes in two forms: for a fixed term (bepaalde tijd) or for an indefinite period (onbepaalde tijd), and the difference decides almost everything that follows. A fixed-term contract ends by operation of law on the agreed date, but under the chain rule in article 7:668a of the Dutch Civil Code it converts into a permanent contract once the employee has had more than three successive contracts, or has worked for more than three years, with breaks of no more than six months in between. Much of what the parties may agree beyond that, from the probationary period to a non-competition clause, is regulated by statute and is void if the statutory conditions are not met.

Fixed term or indefinite: the choice that shapes the relationship

A contract for a fixed term ends automatically when the agreed period expires. No notice is required and no permission from the UWV or the court is needed, which is what makes it attractive to employers. It also cannot normally be ended early: interim termination is only possible if both parties agreed an interim notice clause in writing at the outset. Without that clause, an employer who wants to part company before the end date must either reach a settlement or ask the court to dissolve the contract, and an employee who simply leaves is in breach.A contract for an indefinite period runs until it is properly ended, and ending it requires either the agreement of the employee, permission from the UWV, or a decision of the kantonrechter (subdistrict court). That is the heart of Dutch dismissal protection, and it is why the choice between the two contract forms is a strategic one rather than an administrative detail. The wider framework, including the grounds for dismissal, is set out in our guide to Dutch employment law.Two practical points are often overlooked. An employment contract does not have to be in writing to exist: if someone performs work personally for another for a period of time and is paid for it, the law treats the relationship as employment. What does have to be in writing are the individual clauses that the law makes conditional on written agreement, in particular the probationary period, the non-competition clause and the interim notice clause in a fixed-term contract. Second, a fixed-term contract does not have to run to a calendar date; it can also be tied to the completion of a project. That is permitted, but it has consequences for the notification duty and for the probationary period, discussed below.

The chain rule: when a temporary contract becomes permanent

The ketenregeling exists to stop employers keeping people on temporary contracts indefinitely. It is the single most important rule in this area, and the one most often miscalculated.Under article 7:668a of the Civil Code, successive fixed-term contracts between the same employer and employee convert into a contract for an indefinite period once either of two limits is passed: the chain exceeds three contracts, so that the fourth contract is permanent, or the total duration of the chain exceeds three years, at which point the contract that takes the total past that limit becomes permanent from that moment. Contracts count as successive if the interval between them is six months or less. A break of more than six months resets the chain to zero.Three refinements matter in practice. The rule follows the work, not only the employer: if a new employer must reasonably be regarded as the successor of the previous one in respect of the work performed, the earlier contracts count as well. This is what catches businesses that take over an activity, or that move an employee from an agency contract to a direct one. A collective labour agreement can deviate from the standard limits for specified functions and sectors, which is why the applicable CAO has to be checked before any contract is offered. And in certain sectors and for certain groups, such as seasonal work and some categories of young workers, separate rules apply.The consequences of getting it wrong are not symmetrical. If the chain is exceeded, the employee simply has a permanent contract by operation of law, and an employer who then lets the contract lapse on the supposed end date is terminating a permanent contract without permission. That is an irregular dismissal, and the employee can ask the court to annul it and claim back pay, or claim compensation instead. Keeping an accurate record of every contract, its start and end dates and the intervals between them is not administration for its own sake; it is the evidence on which that question is decided.A change to this rule has been adopted but is not yet in force. Under the legislation intended to give flexible workers more security, the interruption period that breaks the chain will be extended from six months to three years, which will make it far harder to reset the chain by pausing for a season. The act enters into force by royal decree, so until that decree has been made the six-month interval continues to apply. Do not plan on the new rule before it is in effect, and do not assume the old one will last.

Probation, notification and notice periods

Three separate timing rules govern the beginning and the end of a contract, and each has its own trap.

The probationary period

A probationary period must be agreed in writing and must be the same length for both parties. Article 7:652 of the Civil Code sets the maximum and it depends on the contract:

a contract for an indefinite period: two months;
a fixed-term contract of two years or longer: two months;
a fixed-term contract of more than six months but less than two years: one month;
a fixed-term contract whose end is not set on a calendar date: one month;
a fixed-term contract of six months or less: no probationary period at all.

A clause that exceeds the maximum is void in its entirety, and the consequence is severe: there is then no probationary period whatsoever, not a shortened one. An employer who dismisses during what it believed was probation has in that case terminated the contract without a valid basis. A probationary period is also not allowed in a follow-up contract with the same employer unless the new position demands clearly different skills or responsibilities.During a valid probationary period either party may end the contract immediately and without giving a reason, and no notice period applies. The reason may not be discriminatory, and the ordinary prohibitions on discrimination continue to apply. Note also that the entitlement to a transition payment runs from the first day of employment, so a dismissal during probation can still trigger one, however small.

The end-of-contract notification

Article 7:668 of the Civil Code obliges the employer, for every fixed-term contract of six months or more that ends on a calendar date, to inform the employee in writing at least one month before the end date whether the contract will be continued and, if so, on what terms. This is the aanzegverplichting, and it is separate from the question whether the contract ends: the contract still ends, but a failure to notify costs money.An employer that gives no notification owes compensation equal to one month of wages; a late notification costs a proportionate part of that. The claim is not automatic, however: the employee must claim it, and the right lapses if it is not claimed within three months of the day on which the obligation arose. Employers should build the notification into their contract administration a good six weeks in advance; employees who received nothing should raise it promptly rather than after they have found a new job.

Notice periods

For a contract of indefinite duration, the statutory notice period for the employee is one month. For the employer it depends on the length of service, rising in steps from one month for a service of less than five years to four months for a service of fifteen years or more. Notice is given with effect from the end of the calendar month unless the contract or a CAO provides otherwise.The parties may deviate in writing, but not freely. If the notice period for the employee is extended, it may not exceed six months, and the period for the employer must then be at least double that of the employee. A contract that requires two months of notice from the employee and one from the employer is therefore not merely unfair; it does not comply with the statutory requirement.

The clauses the law regulates

A Dutch employment contract can contain a good deal more than the essentials, but several of the most common clauses are only valid on statutory conditions.The non-competition clause is valid only if it has been agreed in writing with an employee of full age. In a fixed-term contract it is in principle not permitted at all, and it is valid only if the employer sets out in the contract itself a written statement of the compelling business interests that make it necessary. A clause without that motivation is void, and even a properly motivated clause can be annulled or limited by a court if the employee is unfairly prejudiced by it in relation to the interest the employer is protecting. A relationship clause, which prohibits contact with clients rather than competition generally, is assessed along the same lines.A clause prohibiting side activities is void unless the employer can rely on an objective justification, such as health and safety, the protection of confidential information or the avoidance of a conflict of interest. The justification does not have to be stated in the contract, but it does have to exist when the employer invokes the clause.Training that the employer is obliged to provide, whether under a statutory rule or under a CAO, must be free of charge for the employee and must as far as possible take place during working hours, and any clause requiring the employee to repay the cost of such compulsory training is void. Study cost repayment clauses remain possible for training the employer is not obliged to provide, provided they are reasonable and taper over time.A unilateral variation clause allows the employer to change terms without agreement, but only where the employer has an interest so substantial that the interest of the employee must yield to it, judged by standards of reasonableness and fairness. In practice courts set that bar high. A penalty clause is subject to detailed statutory requirements about form, destination of the penalty and maximum amounts, and clauses copied from foreign templates regularly fail them.

What must be in the contract, and what the CAO adds

Since the implementation of the European directive on transparent and predictable working conditions, an employer must inform the employee about the essential elements of the relationship, largely in writing and within set periods after the work begins. In practice that information is put in the contract itself.The essentials are the identity of the parties, the place of work, the position and the nature of the work, the start date and, for a fixed-term contract, the end date or the objectively determinable event that ends it, the salary and its components and the method and moment of payment, the working hours and how they are scheduled, the holiday entitlement, the probationary period if any, the notice periods, the pension arrangement if there is one, the training the employer provides, and whether a collective labour agreement applies.That last point deserves emphasis, because a CAO is not optional extra reading. A collective labour agreement concluded between employers organisations and trade unions can apply because the employer is a member of a party to it, or because the minister has declared it universally binding for the sector, in which case it applies to every employer in that sector whether or not they were involved in the negotiations. Where a CAO applies it takes precedence over an individual arrangement that is less favourable to the employee, so a contract that promises less than the CAO simply gives the employee the CAO entitlement. Checking which CAO applies is therefore the first step before drafting anything, not a formality at the end.Some entitlements come straight from statute and cannot be reduced by contract. Every employee is entitled to at least four times the agreed weekly working hours in paid holiday each year, which for a five-day week means twenty days. Holiday allowance of at least eight per cent of the wage is due under the Minimum Wage Act, normally paid out in May or June. The statutory minimum wage itself is revised twice a year and published by the government, so the applicable figure should always be taken from the current official table rather than from an article or an older contract. Working time is capped by the Working Hours Act, which limits a shift to twelve hours and a week to sixty hours, with lower averages over longer reference periods, and prescribes minimum breaks and a weekly uninterrupted rest period.

Situations that need extra care

Some arrangements sit outside the standard full-time contract, and each of them adds a layer of rules on top of everything described above. Flexible working forms, the equal treatment of employees on different contract types, and contracts with a cross-border element account for a large share of the disputes we see, and all three are manageable if they are addressed when the contract is drafted rather than when it is challenged.

On-call work, agency work and other flexible forms

Not every contract is a straightforward full-time engagement, and the flexible forms carry their own rules.An on-call worker must be called at least four days in advance, in writing or electronically, and if the employer cancels or changes the timing within those four days the employee retains the right to be paid for the hours originally called. After twelve months the employer must offer the employee a fixed number of hours based on the average worked in the preceding period. These obligations apply whether the arrangement is called a zero-hours contract, an on-call contract or a min-max contract, and they are frequently ignored, which leaves employers owing wages for hours that were never worked.Agency work has its own regime, and it is changing. Legislation on the admission of agencies to the labour market will require temporary work agencies to be admitted before they may supply workers. Registration with the admission authority runs from 1 November to 31 December 2026, the act enters into force on 1 January 2027 and enforcement follows from 1 January 2028. Businesses that hire agency workers should be checking now that their suppliers will be admitted in time, because hiring from an agency that is not admitted will itself be sanctioned.For genuinely self-employed contractors the question is not which flexible contract applies but whether the relationship is an employment contract at all. The enforcement moratorium of the tax authorities ended on 1 January 2025 and enforcement against false self-employment has resumed. Separately, a legal presumption of employment based on an hourly rate below a set level has been adopted and published in the Staatsblad, but it enters into force by royal decree and is not yet in effect; the part of the original proposal that would have codified the qualification test did not survive. A presumption of that kind, when it applies, does not classify anyone automatically: it shifts the burden of proof once the worker invokes it, and the client can rebut it. Until then, and afterwards, the test remains an assessment of all the circumstances of the working relationship, in which the label the parties chose plays no part.

Equal treatment between contract forms

An employer may not distinguish between employees on the ground of the length of their working time or on the ground that their contract is for a fixed rather than an indefinite period, unless the distinction is objectively justified. Articles 7:648 and 7:649 of the Civil Code state that rule plainly, and it has practical consequences that are widely underestimated.It means that a part-time employee is entitled to the same terms as a full-time colleague in the same position, in proportion to the hours worked: the same hourly rate, the same allowances, the same access to bonus arrangements, the same holiday entitlement per hour. It means that an employee on a fixed-term contract must receive the same conditions as a permanent colleague doing the same work, unless there is a genuine objective reason for the difference. A rule that reserves a benefit for permanent staff is not objectively justified merely because it is administratively convenient.The general equal treatment legislation applies alongside these provisions, prohibiting distinctions on grounds including sex, race, nationality, religion, sexual orientation, age and disability, in recruitment as well as during the employment. Job advertisements, selection criteria and pay structures all fall within its scope, and the burden of proof shifts to the employer once the employee has established facts from which discrimination may be presumed.

Which law applies to an international employment contract

For an employer in the Netherlands hiring across borders, or for an employee coming to work here, the applicable law is not simply whatever the contract says.Within the European Union the question is governed by the Rome I Regulation. Article 8 allows the parties to choose the law applicable to an individual employment contract, but that choice may not deprive the employee of the protection of the mandatory provisions of the law that would have applied in the absence of a choice. That is normally the law of the country in which, or from which, the employee habitually carries out the work, and it does not change merely because the employee is temporarily posted elsewhere. Where no such country can be identified, the law of the place of business through which the employee was engaged applies, unless the contract is more closely connected with another country.In practice this means that an employee who habitually works in the Netherlands enjoys the mandatory protection of Dutch law, including dismissal protection, whatever law the contract selects. A choice of a foreign law is not pointless, since it governs everything that is not mandatory, but it does not allow an employer to contract out of the Dutch dismissal system for staff working here. Jurisdiction is a separate question again, decided by its own European rules, and an employee can generally sue in the country where the work is carried out.Employers posting workers to the Netherlands from another member state have additional obligations, including notification before the work starts and the application of a core set of Dutch employment conditions such as the minimum wage, working time and holiday entitlement. These duties fall on the foreign employer, but the Dutch client that engages the service carries verification duties of its own, and both can be sanctioned.

How the contract ends

A fixed-term contract ends when it expires. Everything else requires one of a limited number of routes, and the route depends on the reason.Where the reason is economic, such as a reorganisation or the disappearance of a position, or where the employee has been unfit for work for more than two years, the employer must obtain permission from the UWV before giving notice. Where the reason lies in the person, such as underperformance, culpable conduct or a seriously disturbed working relationship, the employer must ask the subdistrict court to dissolve the contract. The third route is agreement: a vaststellingsovereenkomst (settlement agreement) in which the parties record the end date and the terms. An employee who signs one has a statutory reflection period in which the agreement can be revoked, and the employer must point that period out in the agreement itself.Two features of the system regularly surprise employers used to other jurisdictions. The court examines whether the ground relied on is complete in itself: a case that is half underperformance and half conflict may fail on both, although the law does allow a combination of grounds to be advanced, in which case the court can award additional compensation on top of the transition payment. And a dismissal file has to be built before the application is made, not afterwards; for underperformance in particular, the employer must show that the employee was told in good time, was given a genuine opportunity to improve, and was supported in doing so.The transition payment is due whenever the employment ends at the initiative of the employer, including when a fixed-term contract is not renewed. It accrues from the first day of employment and amounts to one third of the monthly salary for each full year of service, calculated pro rata for the remainder. There is a statutory ceiling that is adjusted each year, so the applicable maximum should be taken from the current figure. In insolvency the entitlement falls away, and the UWV guarantee scheme does not cover it. The procedural detail of each route is set out in our article on how to terminate employment in the Netherlands.Illness changes the picture entirely. During the first two years of incapacity the employer must continue to pay at least seventy per cent of the wage, in the first year not less than the statutory minimum wage, and a prohibition on termination applies during that period, subject to exceptions. Employer and employee must work together on reintegration, and an employer who fails to do enough can be required by the UWV to continue paying wages for a further period. Our article on employee sickness rights explains what both sides must do.

Changing a contract that is already running

Terms cannot simply be altered once the contract is in force. If the contract contains a valid unilateral variation clause, the employer must still show an interest substantial enough that the interest of the employee has to yield to it. Without such a clause, the employer can propose a change, and the employee must respond reasonably: where the employer has a good reason connected to changed circumstances, and the proposal itself is reasonable, an employee who refuses may be in the wrong. Courts assess that in stages, looking first at whether the circumstances genuinely changed, then at whether the proposal was reasonable in the light of all the interests, and finally at whether acceptance could reasonably be required of this employee.The practical lesson is the same for both sides. An employer who wants to reorganise terms should document the reason, consult properly, offer a transitional arrangement and put the proposal in writing. An employee who disagrees should say so in writing and continue working under protest rather than simply refusing, because walking away can be treated as the employee ending the contract.

Mistakes that cost the most

Certain errors recur, and all of them are avoidable at the drafting stage.The most expensive is losing count of the chain. Contracts are extended informally, an interval is miscalculated, an agency period is forgotten, and an employer discovers that the employee it thought was leaving in June has a permanent contract. Keep a register and check it before every extension.The second is the void probationary period, usually a two-month clause in a one-year contract. The third is the missed end-of-contract notification, which is pure avoidable expense. The fourth is a non-competition clause in a fixed-term contract without a written statement of compelling business interests, which leaves the employer with no protection at exactly the moment it is needed. The fifth is treating a CAO as optional, and discovering during a payroll audit that the applicable scale, allowances and pension contributions have been underpaid for years.For employees the mirror image applies. Signing a settlement agreement without advice, letting the reflection period pass, accepting that no transition payment is due, or assuming that a probationary dismissal cannot be challenged: each of these gives away an entitlement that the law provides.

How we can help

Law & More drafts and reviews employment contracts, checks chains of fixed-term contracts and the clauses that go with them, advises on the applicable collective labour agreement, and acts for employers and employees when a contract has to be changed or ended. If you are about to offer, sign or extend a contract, a review beforehand is considerably cheaper than the dispute that follows a clause that turns out to be void.

Frequently asked questions

A few questions come up again and again for both employers and employees. The answers below cover the most common ones.

What is a Collective labour agreement (CAO) and does it apply to me?

A Collective Labour Agreement, known as a CAO (Collectieve Arbeidsovereenkomst), is essentially an industry-wide rulebook. It’s an agreement covering wages and working conditions, hammered out between employer organisations and trade unions. A CAO often provides better terms than the bare legal minimums.

So, does it apply to you? If a CAO has been declared universally applicable for your business sector, then yes—its rules apply to you and your employees. This is the case even if you aren’t a direct member of the employer organisation that signed the deal. Your employment contracts should always make it clear whether a CAO is in place.

What are my rights for parental Leave in the Netherlands?

The Netherlands has a solid system to support new parents. For each child under the age of eight, an employee is entitled to a total of 26 weeks of parental leave. This gives families real flexibility to balance work and home life when their children are young.

Some important changes have recently made part of this leave paid.

Paid Leave: The first nine weeks are partially paid by the UWV (the Employee Insurance Agency) at 70% of your daily wage.
Condition: The key is that you must take this paid leave within the child’s first year.
Unpaid Leave: The other 17 weeks are generally unpaid, though some CAOs or individual employers might offer more generous arrangements.

It’s crucial to understand the difference between the paid and unpaid portions for your financial planning. Always double-check your CAO or company handbook, as it might offer better benefits than the statutory minimum, like continuing to pay your salary during the “unpaid” weeks.

Can my employer change my Contract without my consent?

Under Dutch law, changing an employment contract without the employee’s agreement is extremely difficult. An employer can’t just decide to impose new terms whenever they feel like it. The contract you both signed is a legally binding document designed to protect both of you from arbitrary changes.

An employer can only make a one-sided change if two very strict conditions are met:

The contract must include a specific ‘unilateral changes clause’ (eenzijdig wijzigingsbeding).
The employer has to prove a substantial business interest so pressing that it overrides the employee’s interest in keeping the original terms.

This is an incredibly high bar to clear in court, which helps ensure that your core employment conditions remain stable and predictable.

The Dutch employment contract: types, clauses and the chain rule

Fixed term or indefinite: the choice that shapes the relationship

The chain rule: when a temporary contract becomes permanent