Changing Employment Conditions in the Netherlands

Changing Employment Conditions in the Netherlands

Changing the terms and conditions of employment is one of the most legally sensitive areas of Dutch employment law. The general principle, derived from contract law, is that an agreement can only be amended with the consent of both parties. An employer who wishes to change salary, working hours, job content, fringe benefits, or other agreed terms must therefore obtain the employee's agreement - or rely on one of the specific legal mechanisms that permit unilateral change.

Three distinct legal bases exist for changing employment conditions in the Netherlands:

1. Mutual consent: The simplest route. Both parties agree in writing to amended terms. This avoids all legal dispute, but requires the employee's genuine, free agreement - consent obtained under the threat of dismissal may be challenged.
2. The unilateral change clause (Article 7:613 of the Dutch Civil Code): If the employment contract or applicable cao (collective labour agreement) contains a valid eenzijdig wijzigingsbeding, the employer may impose changes provided a compelling business interest (zwaarwichtig belang) exists. This is a high threshold. See our dedicated page on the unilateral change clause.
3. The Stoof/Mammoet doctrine (Article 7:611 of the Dutch Civil Code): Even without a unilateral change clause, Dutch case law holds that an employee must, as a good employee (goed werknemer), accept reasonable proposals for change arising from genuine altered circumstances, provided the employer's interest objectively outweighs the employee's interest in maintaining the status quo.

Collective Changes and the Works Council

Where changes affect a group of employees or touch on working conditions covered by works council co-determination rights under the Wet op de ondernemingsraden (WOR), the employer must first obtain a positive advice or consent from the ondernemingsraad (works council). Failure to do so renders the change voidable. Changes to pension schemes, profit-sharing, and working hours are among the categories requiring works council consent. For more on works council rights, see our page on Dutch employment law.

If an employer imposes changes unlawfully, the employee may continue to work under the original conditions, claim back any lost salary or benefits, and in serious cases seek damages. Equally, an employee who refuses a lawful, reasonable proposal for change - after a proper process - may face dismissal on the ground that continuation of the employment relationship is no longer reasonable. Consult an employment lawyer in the Netherlands before acting in either direction.

The Supreme Court has established that an employer may only rely on an employee's implied consent to a deterioration in conditions if the employee was given clarity about the impact of the change and if, based on declarations and conduct, it may be assumed that the employee deliberately agreed. For the most essential terms - wage, working hours, job content, place of work - Dutch law requires mutual consent, and Article 7:655(3) of the Dutch Civil Code obliges the employer to record any such changes in writing.