Collective labour agreement (CAO) under Dutch law
A collective labour agreement (collectieve arbeidsovereenkomst, CAO) is a written agreement between one or more employers or employer associations and one or more trade unions setting out the terms and conditions of employment for a specific sector or company. In the Netherlands, CAOs are governed by the Collective Labour Agreement Act (Wet op de collectieve arbeidsovereenkomst, WCAO). They play a central role in Dutch employment law and cover topics such as wages, working hours, notice periods, pension contributions and dismissal procedures.
There are two main types of CAO: the bedrijfstak-CAO, which applies to an entire sector (for example, construction or healthcare), and the ondernemings-CAO, which applies to a single company. Approximately 80% of Dutch employees are covered by a CAO, making them the primary source of employment conditions alongside Book 7 Title 10 of the Dutch Civil Code.
Binding effect of a CAO under Dutch law
A CAO is binding on employers and employees who are members of the contracting parties. Beyond this, the Minister of Social Affairs and Employment can declare a sector CAO algemeen verbindend (generally binding) under the Act on the General Binding and Non-Binding of Collective Labour Agreements (Wet AVV). Once declared generally binding, the CAO applies to all employers and employees in that sector - including those who are not members of the trade union or employer association that concluded the agreement.
Where a CAO applies, its provisions prevail over individual employment contract terms that are less favourable to the employee. Only if the CAO itself permits it (a so-called incorporatiebeding or derogation clause) may the parties agree to different - and sometimes less favourable - conditions.
CAO and termination of employment under Dutch law
Many CAOs contain specific rules on dismissal procedures, notice periods longer than the statutory minimum, and additional severance entitlements on top of the statutory transition payment. An employer who fails to comply with the applicable CAO when terminating employment may face claims for additional compensation. If you are unsure whether a CAO applies to your situation, consult an employment lawyer in the Netherlands. The Act on Collective Agreements (Wet op de collectieve arbeidsovereenkomsten, WCAO) of 1927 and the Act on the Extension and Non-Extension of Collective Agreements (AECA) of 1937 remain the primary legislative framework. A CAO must be in writing (Article 3 WCAO), and the parties must notify the Minister of Social Affairs and Employment of its conclusion, modification or cancellation (Article 4 WDA); the agreement cannot bind parties before the day following the Minister's acknowledgement of receipt. A CAO may not be concluded for more than five years (Article 18 WCAO), after which it is prolonged year by year unless denounced by registered letter with a notice period of one-twelfth of the original duration (Article 20 WCAO).