Under Dutch law, contracting parties are free to decide whether to contract, with whom and on what terms. That freedom ends where mandatory law (dwingend recht) begins: under Article 3:40 of the Dutch Civil Code (BW), a clause that conflicts with a mandatory statutory rule is void or, if the rule only protects one party, voidable, and the statutory rule applies instead.
Party autonomy (contractsvrijheid) is therefore the starting point in every Dutch contract, and mandatory law is the boundary. Below we explain where that line runs in general terms and conditions, company law, employment law, family law and cross-border contracts, and how to draft an agreement that holds.
Table of contents
What does party autonomy cover in Dutch law?
Most of Dutch contract law is regulatory law (regelend recht): it applies only if you have not agreed otherwise. The main exceptions are rules that protect weaker parties, rules on form and the standard of reasonableness and fairness.
Book 6 BW contains the rules on offer and acceptance, performance, default and damages. Because most of them are regulatory, a Dutch commercial contract can depart from the statutory rules on notice periods, passing of risk, interest, limitation of liability and late delivery.
Freedom of contract has three components. The freedom to contract at all is subject to good faith in negotiations. The freedom to choose a counterparty is limited mainly by equal treatment and competition law. The freedom of content is the one mandatory law restricts most often.
Does a Dutch contract need to be in writing?
Usually not. Most contracts are valid whether signed on paper, concluded by e-mail or agreed orally.
The exceptions are specific and mandatory. A prenuptial agreement (huwelijkse voorwaarden) and the transfer of shares in a private limited company (BV) require a notarial deed (Articles 1:115 and 2:196 BW). A non-compete clause must be agreed in writing (Article 7:653 BW). Where the law prescribes a form, ignoring it normally makes the act null (Article 3:39 BW).
Can a court set aside a clause you freely agreed?
Yes. Under Article 6:248(2) BW a contractual rule does not apply if, in the circumstances, applying it would be unacceptable by standards of reasonableness and fairness (redelijkheid en billijkheid).
That is not mandatory law in the strict sense, but it has the same practical effect. Courts apply the test with restraint, particularly between professional parties. For an overview of the system as a whole, see our guide to contract law in the Netherlands.
How do you know whether a rule is mandatory?
From the statute itself, the chapter it sits in and its protective purpose, because Dutch legislation rarely uses a label. Book 2 BW is the clearest case: under Article 2:25 BW its provisions may be departed from only in so far as the law itself allows.
In employment, tenancy, agency and consumer sales, Book 7 BW states per title from which articles no deviation is possible. Where the statute is silent, a provision that exists to protect one identifiable weaker party is normally mandatory in that party’s favour.
What is three-quarters mandatory law?
It is a rule that individual parties cannot set aside, but a collective labour agreement (cao) can. Dutch law calls this three-quarters mandatory law (driekwartdwingend recht).
Parts of the regime on successive fixed-term contracts in Article 7:668a BW work this way. The same clause can therefore be void in one company and valid in another, simply because a sector cao applies, so checking for a cao is a first step.
Void or voidable: why does the difference matter?
A void clause never has effect; a voidable clause stands until the protected party invalidates it. The sanction is set out in Article 3:40 BW.
A legal act contrary to good morals or public order is null (nietig): anyone can rely on that, and no time limit applies. A legal act that conflicts with a mandatory statutory provision is also null, unless the provision only protects one party; then it is voidable (vernietigbaar). The protected party invokes the defect in court or by an out-of-court declaration, usually within three years (Article 3:52 BW).
Does one invalid clause bring down the whole contract?
Normally not. Under Article 3:41 BW the rest stays in force, unless it is inseparably connected to the invalid part.
Under Article 3:42 BW a void clause can be converted (conversie) into a valid one with a corresponding effect, if the parties would have chosen that had they known of the defect. A limitation of liability that reaches too far may thus be reduced rather than struck out. A severability clause records what the parties consider separable, but it cannot rescue a clause that goes to the heart of the bargain.
Where does mandatory law limit general terms and conditions?
General terms and conditions are where mandatory law bites hardest in Dutch commercial practice. Articles 6:231 to 6:247 BW govern both whether the terms became part of the contract and whether their content is acceptable.
The user must give the counterparty a reasonable opportunity to take note of the terms before or when the contract is concluded, normally by handing them over or sending them with the offer (Article 6:234 BW). Individual clauses must not be unreasonably onerous (Article 6:233(a) BW). If the first test fails, a clause can be annulled without any discussion of its content.
What are the black list and the grey list?
For consumer contracts, clauses on the black list (zwarte lijst, Article 6:236 BW) are always unreasonably onerous; clauses on the grey list (grijze lijst, Article 6:237 BW) are presumed to be, which shifts the burden of proof to the trader.
The black list includes a term that excludes the consumer’s right to dissolve the contract and a price increase within three months of contracting without a right to dissolve. The grey list includes a right for the trader to deliver something materially different, an unusually long or vague period for performance, and a release from a statutory obligation to pay damages.
Do these rules also protect businesses?
Partly. Under Article 6:235 BW, large parties, such as companies that publish annual accounts or have 50 or more employees, cannot rely on the reasonableness test at all.
Courts also apply the reflex effect (reflexwerking): a small business in a position comparable to a consumer may benefit from the standards of the black and grey lists. One set of terms for consumers, small traders and multinationals is therefore a false economy. See our articles on the risks of copying general terms and conditions and our guide to drafting general terms and conditions.
Whose terms apply in a battle of forms?
Under Article 6:225(3) BW, the set of terms referred to first prevails, unless the other party expressly rejects it. A standard sentence buried in a reply is regularly held to be insufficient, so an ordinary purchase order can decide a liability cap.
How much freedom do shareholders have in Dutch company law?
Less than a shareholders’ agreement suggests. Because Article 2:25 BW allows deviation from Book 2 only where the law says so, the statutory rules bind a BV or NV unless the legislator has opened a door.
The flexibilisation of BV law on 1 October 2012 widened those doors considerably: shares without voting rights or without profit entitlement, tailor-made transfer restrictions and instruction rights for a specific body. Each option exists because the statute permits it, not because the shareholders agreed on it.
What can a shareholders’ agreement not do?
A shareholders’ agreement (aandeelhoudersovereenkomst) binds the shareholders who signed it, but not the company or third parties. A resolution adopted in breach of a voting agreement is not automatically invalid, and a new shareholder who did not join the agreement is not bound by it.
Arrangements meant to bind successors and the company belong in the articles of association. Our article on the shareholders agreement examines that division of labour.
Which mandatory limits recur in practice?
- Directors owe the company proper performance of their task (Article 2:9 BW); that duty cannot be excluded in advance, and discharge (decharge) only covers what the general meeting could see from the accounts.
- Article 2:8 BW requires the company and everyone involved in its organisation to act according to reasonableness and fairness, the main basis for holding a majority shareholder to account.
- Capital and creditor protection, including the distribution test of Article 2:216 BW before a BV pays a dividend, is not at the shareholders’ disposal.
- Minority rights, such as the right to request an inquiry by the Enterprise Chamber (Ondernemingskamer), cannot be contracted away. See our article on the rights of minority shareholders.
An example to illustrate: two founders of a BV agree that no new shares will be issued for five years, to protect their stakes. A year later the company is close to insolvency and an investor will fund it only in exchange for new shares. A founder who votes for the issue may be liable to the other for breach of contract, but the clause does not override the board’s duty to act in the interest of the company, and a court may refuse an injunction that would push the company into bankruptcy.
Which employment rules can you not contract out of?
You cannot contract below the statutory floor of Dutch employment law. An employment contract that falls below mandatory or three-quarters mandatory provisions is corrected rather than enforced.
The statutory minimum wage and holiday allowance apply whatever the contract says, and the Working Hours Act (Arbeidstijdenwet) caps working time. Statutory holiday entitlement of four times the weekly working hours accrues by law (Article 7:634 BW) and cannot be bought off during employment, although days above the statutory minimum can be.
Can an employer design its own dismissal procedure?
No. Outside probation, summary dismissal and mutual consent, ending an open-ended contract requires permission from the Employee Insurance Agency (UWV) or a decision of the subdistrict court (kantonrechter), depending on the ground in Article 7:669(3) BW.
The UWV route applies to redundancy and long-term incapacity for work; the court route to personal grounds such as underperformance or a disrupted working relationship. Statutory notice periods apply, and the transition payment (transitievergoeding) under Article 7:673 BW cannot be waived in advance.
How does a settlement agreement fit in?
A settlement agreement (vaststellingsovereenkomst) ends the employment by mutual consent, so the dismissal grounds do not have to be proved. Under Article 7:670b BW the employee can still revoke consent within 14 days, or three weeks if the agreement does not mention that right.
The wording also determines whether unemployment benefit is at risk. Drafting to protect the benefit position is a legitimate use of contractual freedom; drafting to get around the revocation period is not.
When is a non-compete clause valid?
Under Article 7:653 BW a non-compete clause (concurrentiebeding) must be agreed in writing with an adult employee. In a fixed-term contract it must also state the compelling business interests that make it necessary.
Even a valid clause can be set aside in whole or in part where the employee is unfairly disadvantaged. A bill that would cap clauses at one year and require compensation was sent to the Council of State in June 2026, but is not law. See our article on non-compete clauses under Dutch employment law.
What can couples arrange in family agreements?
Spouses and registered partners can arrange their property relations largely as they wish, but only in a prenuptial or postnuptial agreement executed before a civil-law notary (notaris). Maintenance for children cannot be contracted away.
For marriages entered into on or after 1 January 2018, the default is a limited community of property, in which pre-marital assets, gifts and inheritances remain private. Couples who want full community or complete separation must say so in a notarial deed; an informal side letter has no effect.
Can you waive maintenance by contract?
Article 1:400(2) BW provides that agreements waiving maintenance owed under the law are null. For children that is absolute: parents cannot contract away their duty to contribute to the costs of care and upbringing.
Between spouses, Article 1:158 BW allows agreements on maintenance in connection with a divorce, including that none will be paid. The Supreme Court (Hoge Raad) held on 25 November 2022 (ECLI:NL:HR:2022:1724) that a waiver of partner maintenance agreed before the marriage, for example in a prenuptial agreement, is null.
Unmarried cohabitants owe each other no statutory maintenance, even with a notarial cohabitation agreement (samenlevingscontract), so a waiver adds nothing. Such an agreement can usefully regulate ownership of the home, household costs, pensions and the division of joint assets on separation.
Can you choose a foreign law to escape Dutch mandatory rules?
You can choose a foreign law, but it will not remove every Dutch mandatory rule. Under Article 3 of the Rome I Regulation (Regulation (EC) No 593/2008) a contract is governed by the law the parties choose, but Articles 3(3), 6, 8, 9 and 21 set the limits.
- Purely domestic situations: where all other elements are in one country, a foreign choice cannot displace that country’s mandatory rules (Article 3(3)).
- Consumers: the choice cannot deprive a consumer of the mandatory protection of the country of habitual residence where the trader directs its activities there (Article 6).
- Employees: the same applies to the law of the country where the employee habitually works (Article 8).
- Overriding mandatory provisions, such as sanctions and competition law, apply whatever the chosen law (Article 9); a court may refuse a foreign rule that is manifestly incompatible with public policy (Article 21).
An example to illustrate: a company established abroad engages a sales representative who works only in the Netherlands, under the law of its home country. The choice is valid for much of the contract, but it cannot remove the requirement of UWV or court permission for dismissal, the statutory notice period or the transition payment.
Does arbitration change the boundary?
Arbitration widens your freedom on procedure, not on substance. Book 4 of the Code of Civil Procedure (Rv) lets parties choose the arbitrators, seat, language and applicable law, but the court of appeal can set aside an award on the grounds in Article 1065 Rv, including conflict with public policy.
For foreign awards, the New York Convention allows enforcement to be refused on public policy grounds. In consumer general terms, an arbitration clause is on the black list unless the consumer gets at least one month, after the trader invokes it in writing, to choose the ordinary court instead (Article 6:236(n) BW).
How do you draft an agreement that survives the test?
Treat mandatory law as part of the drafting, not as a final check. The counterparty decides whether the consumer regime, the reflex effect or the exclusion for large parties in Article 6:235 BW applies; the subject matter decides whether protective legislation is engaged; the place of performance decides which rules apply regardless of the chosen law.
A clause that limits liability “to the maximum extent permitted by applicable law” gives a court something to reduce rather than strike out, and fits the conversion rule of Article 3:42 BW. Add a fallback ladder to clauses likely to be attacked, such as a non-compete with a shorter alternative duration or a narrower geographic scope. For the clauses that deserve this treatment, see the main types of commercial agreement and drafting commercial agreements.
What should you check as the party drafting the contract?
As the user of the terms, you carry the risk that a clause is void or voidable under Articles 3:40 and 6:233 BW.
- Is your counterparty a consumer, a small business or a large party within Article 6:235 BW?
- Did you send the general terms with the offer, and have you kept the version that applied on the contract date (Article 6:234 BW)?
- Does any clause appear on the black list (Article 6:236 BW) or grey list (Article 6:237 BW)?
- Does a formal requirement apply, such as writing for a non-compete or a notarial deed for a share transfer?
- Which mandatory rules apply in the country of performance, whatever law you chose under Rome I?
What should you check as the party receiving the terms?
A clause that conflicts with mandatory law protecting you is usually voidable, so you have to invoke it, normally within three years (Article 3:52 BW).
- Did you receive the general terms before or when you contracted? If not, you can annul clauses on that ground alone.
- Have you expressly rejected the other party’s terms in a battle of forms (Article 6:225(3) BW)?
- Is the clause unreasonably onerous, or would applying it be unacceptable under Article 6:248(2) BW?
- As a consumer or employee: does a choice of foreign law deprive you of Dutch mandatory protection (Rome I, Articles 6 and 8)?
What can we do for you with party autonomy and mandatory law?
Our civil lawyers advise businesses and private clients on this boundary, from general terms and shareholders’ agreements to employment documents, prenuptial agreements and cross-border contracts.
- We review your contract or general terms against the black and grey lists and other mandatory rules.
- We draft conditional clauses, severability clauses and fallback ladders that a Dutch court can apply.
- We check whether a choice of foreign law or an arbitration clause holds under Rome I and Article 1065 Rv.
- We send the out-of-court declaration annulling a voidable clause, or defend against one.
- We align a shareholders’ agreement with the articles of association under Article 2:25 BW.
Summary
- Most Dutch contract law is regulatory: you can agree otherwise, unless a mandatory rule, a formal requirement or reasonableness and fairness (Article 6:248 BW) stands in the way.
- A clause that breaches mandatory law is void, or voidable if the rule protects one party only (Article 3:40 BW); the rest of the contract usually survives (Articles 3:41 and 3:42 BW).
- General terms, company law, employment law and family law each have their own mandatory limits, such as the black and grey lists, Article 2:25 BW, the dismissal rules and Article 1:400(2) BW.
- A choice of foreign law under Rome I does not remove the mandatory protection of consumers and employees, or overriding mandatory provisions.
- Conditional drafting, a fallback ladder and proof that terms were provided make an agreement more resilient.
Frequently asked questions
Can we choose a foreign law to avoid Dutch dismissal rules?
No. A choice of foreign law in an employment contract is valid, but under Article 8 of the Rome I Regulation it cannot deprive the employee of the mandatory protection of the law that would otherwise apply. For someone habitually working in the Netherlands, UWV or court permission, statutory notice periods, protection during illness and the transition payment continue to apply.
If one clause is void, is the whole contract void?
Usually not. Article 3:41 BW keeps the rest of the agreement in force unless the invalid part is inseparably connected to it, and Article 3:42 BW allows a defective clause to be converted into a valid one. Nullity can extend to the whole contract if its very object is unlawful.
Can a business buyer waive consumer protection in an international sales contract?
Between genuine businesses, largely yes: the consumer regime does not apply. A small business contracting outside its normal field may benefit from the reflex effect of the black and grey lists, and the mandatory rules preserved by Rome I still apply.
How do I tell whether a provision is mandatory?
Read the statute in context. Book 2 BW is mandatory unless it states otherwise (Article 2:25 BW). The protective titles of Book 7 BW state which articles cannot be departed from. Where the statute is silent, a rule that protects one weaker party is normally mandatory in its favour and leads to voidability.
