Foreign employers operating in the Netherlands face a concrete deadline. Recent amendments to Dutch employment legislation have taken effect, tightening obligations around employment contracts, social security contributions, and termination procedures. Companies that miss the compliance window risk administrative fines, invalid dismissal proceedings before the Rechtbank (Dutch district court). Additionally. Personal liability for directors of a BV (besloten vennootschap. private limited company) or NV (naamloze vennootschap – public limited company).
Dutch employment legislation has been updated with changes effective from 1 January 2026, introducing stricter requirements for written employment contracts, revised dismissal notice periods, and expanded social security registration obligations for cross-border employers. Foreign companies employing staff in the Netherlands – whether directly or through a local entity – must align their documentation and procedures with the updated rules. The compliance deadline for existing contracts and workforce arrangements is 1 April 2026.
This alert explains which employers are affected, which thresholds trigger the new obligations, and the five immediate steps your organisation should take before the deadline.
What has changed: the regulatory update and its effective date
Dutch employment legislation was amended with effect from 1 January 2026. The changes address three interconnected areas.
Written employment contract requirements. Every employment contract must now specify, in writing, the exact place of work, applicable working hours, and the relevant cao (collectieve arbeidsovereenkomst – collective agreement) where one exists. Previously, oral or implied arrangements were tolerated in limited circumstances. That tolerance has been removed. Foreign employers relying on contracts drafted under their home-country employment law are particularly exposed.
Revised dismissal notice periods. The dismissal notice period calculation has been updated. The minimum period now rises incrementally based on the employee's continuous service, and the rules for calculating that service period have been tightened. Employers who initiate a termination procedure without applying the correct period face reinstatement orders or compensation awards from the Hoge Raad (Supreme Court of the Netherlands) line of case law that governs unlawful dismissal.
Social security registration for cross-border employers. Foreign entities that post workers to the Netherlands or employ Dutch residents without a registered local entity must now complete social security registration within 30 days of the first working day. The registration is filed with the Dutch tax and social security authorities, separate from the commercial registration at the KvK (Kamer van Koophandel – Dutch Chamber of Commerce). Failure to register triggers retroactive contribution liability from the date employment commenced.
For a full review of how these changes interact with your Dutch corporate structure, see our guidance on corporate law matters in the Netherlands.
Who is affected: threshold criteria and business categories
The amendments apply broadly. Any foreign employer with staff working in the Netherlands is within scope. The following categories face the highest immediate exposure.
- Foreign companies without a Dutch BV or NV that employ Dutch residents on contracts governed by foreign employment law.
- Multinational groups that post employees to the Netherlands for assignments exceeding 30 days in any 12-month period.
- Employers in sectors covered by a mandatory collective agreement – including logistics, construction, and hospitality – where the updated cao terms must be incorporated into individual employment contracts.
- Companies that use secondment or agency arrangements without verifying that the Dutch employment legislation obligations have been correctly allocated between the parties.
- Businesses that have not yet registered with the KvK or completed social security registration but have workers already active in the country.
Size is not a threshold. The obligations apply regardless of headcount. A single employee working from home in Amsterdam triggers the same registration and documentation requirements as a large multinational workforce. The notaris (civil-law notary) is not directly involved in employment registration, but notarial involvement remains relevant when establishing or restructuring a BV or NV that will serve as the employing entity.
For companies assessing the broader employment compliance picture, our dedicated page on employment law in the Netherlands sets out the full regulatory regime applicable to foreign employers.
To receive an expert assessment of your company's employment exposure in the Netherlands, contact us at info@ferrazwhitmore.com.
What to do now: immediate actions and timeline
With the compliance deadline of 1 April 2026, organisations have limited time to act. The following five steps should be initiated without delay.
1. Audit all employment contracts. Review every contract for employees based in the Netherlands. Confirm that each contract is in writing and contains the mandatory provisions now required under Dutch employment legislation. Contracts drafted under UK, US, German, or other foreign employment law are unlikely to satisfy Dutch requirements without amendment.
2. Recalculate dismissal notice periods. For each employee, verify the continuous service period and recalculate the applicable dismissal notice period under the updated rules. Update your HR systems to reflect the new calculation methodology. Any pending or planned termination procedures must apply the revised periods immediately.
3. Complete social security registration. If your organisation employs Dutch residents or posts workers to the Netherlands without a registered Dutch entity, initiate social security registration with the relevant authorities. This is separate from KvK registration and must be completed within 30 days of the first working day – a deadline that may already have passed for existing arrangements.
4. Check collective agreement applicability. Identify whether any sector-level collective agreement applies to your workforce. Where a cao is mandatory in your industry, its terms must be incorporated into individual employment contracts. Non-incorporation is treated as a breach of employment legislation and can be enforced by employee representatives or via the Rechtbank.
5. Review secondment and agency structures. If workers are supplied through a third-party arrangement, confirm in writing which party bears the Dutch employment legislation obligations. Dutch courts have consistently held that responsibility cannot be contractually displaced where the economic employer is the foreign principal.
For a comparable alert on employment regulatory developments in a neighbouring jurisdiction, see our update on employment regulation changes in Portugal.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our employment law practice supports foreign employers entering or operating in the Netherlands – from employment contract drafting and collective agreement compliance to termination procedures and social security registration. The firm's attorneys have advised on cross-border workforce matters across both civil law and common law systems, including matters before Dutch courts and EU regulatory bodies. As an international law firm in the Netherlands market context, we help in-house counsel and HR teams build compliant employment structures from day one. To discuss your compliance position before the April 2026 deadline, contact us at info@ferrazwhitmore.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.