Works council advice on an acquisition in the Netherlands: when it applies and how it shapes the timeline

Yes, in most cases. Works council advice on an acquisition in the Netherlands is a legal step, not a courtesy. In 2026, any Dutch company with 50 or more people must have a works council. That council has a right to advise on a planned transfer of control. Management must request it while the advice can still change the decision.

As a result, the advice usually comes after the first serious bid and before the purchase agreement binds. For a US buyer, that makes it part of the deal timetable, not a formality after closing.

When does a Dutch works council advise on an acquisition in the Netherlands?

A Dutch works council advises whenever the company plans to transfer control of all or part of its business. As of November 2026, that right sits in article 25 of the Works Councils Act (WOR). Article 2 makes a works council mandatory once 50 or more people normally work there. Most mid-sized targets therefore have one.

Share deals count too

The advice right is not limited to asset sales. In principle, a sale of most of the shares is also a change of control, so the same rule applies. That holds even when the parent company takes the decision. The law generally treats that decision as the target’s own. So the target’s works council is usually the one to ask.

The buyer’s side can need advice as well

Article 25 also covers a Dutch company’s plan to take control of another business. So a US group that buys through an existing Dutch subsidiary may face a second request. This applies where that subsidiary has its own works council.

In each case, management submits the planned decision in writing. It sets out the reasons and the expected effect on staff. Council members must keep business secrets, and management can also impose confidentiality on deal information (art. 20 WOR). For the council’s wider role, read our guide to works councils for businesses in the Netherlands.

What does the SER Merger Code add to an acquisition in the Netherlands?

The SER Merger Code adds a second track: informing trade unions. As of November 2026, the SER Merger Code 2015 is the current version. It applies when a deal involves a Dutch-registered enterprise that normally has 50 or more employees. The parties must inform the unions before they agree the deal and before any public announcement.

Despite its name, the code covers acquisitions as well as mergers. It treats any direct or indirect acquisition of control over an enterprise, or part of one, as a merger. A group whose Dutch members together employ 50 people also falls within its scope. Moreover, the code binds every party to the agreement that transfers control, so a US buyer that signs is covered. Advisers and intermediaries, by contrast, are not parties.

The unions hear why the deal makes sense and what policy the parties intend. They also learn its expected social, economic and legal effects. Their views then go to the works council before it gives its advice. At the same time as the unions, the parties also notify the SER secretariat.

A few further points matter for deal teams:

• Confidentiality: the unions must keep the planned merger confidential until it becomes public.
• No agreement needed: the parties do not have to reach agreement with the unions. However, the code’s adjudication committee can publish a ruling that a party failed to comply.
• Scope limits: intra-group deals, deals outside Dutch jurisdiction and transfers involving fewer than 10 employees fall outside the code. A CAO, the Dutch collective labor agreement, can also bring other companies within it. Check the scope with counsel for your structure.

Can the works council stop an acquisition in the Netherlands?

No. A Dutch works council has no veto over a sale. However, if the company decides against its advice, it must wait one month before carrying out the decision. During that month, the council can appeal to the Enterprise Chamber of the Amsterdam Court of Appeal. If the appeal succeeds, the court can block or reverse the decision (articles 25 and 26 WOR).

The court applies a narrow test. It asks whether the company, weighing the interests involved, could reasonably have reached its decision. In practice, challenges often turn on procedure, such as advice requested too late or incomplete information. Where the council wins, the court can order the company to withdraw the decision or undo its effects. It can also ban further steps.

An appeal does not suspend the decision on its own. Even so, the court can grant provisional measures while the case runs. On the other hand, there is no wait if the decision follows the advice or the council waives it. The council can also give positive advice with conditions, for example on jobs or terms. A positive advice is therefore the most direct route to an on-time closing.

How do works council rules in France and Germany compare?

Both countries also involve employee bodies, but on different terms. Under the French Labor Code (art. L2312-8), an employer with 50 or more employees consults its social and economic committee (CSE) before deciding. In Germany, management informs the economic committee about a takeover in companies with over 100 permanent employees. Neither body approves the deal.

Topic	Netherlands	France	Germany
Employee body	Works council (ondernemingsraad)	Social and economic committee (CSE)	Economic committee (Wirtschaftsausschuss) of the German works council
Size that triggers the takeover right	50 or more people (art. 2 WOR)	50 or more employees (art. L2312-8)	More than 100 permanent employees (§ 106 BetrVG); otherwise the works council itself (§ 109a)
What the body receives	A right to advise on the transfer of control (art. 25 WOR)	Information and consultation on changes to the legal or economic organization (art. L2312-8)	Information on the buyer, its plans and the effect on staff (§ 106 BetrVG)
Timing	Early enough for the advice to change the decision	Before the employer decides (art. L2312-14)	In good time (§ 106 BetrVG)
Time limit for the opinion	None set in the law	One month by default, two with an expert (art. R2312-6)	None set in the law
Can it block the deal?	No, but a one-month wait applies if the advice is not followed	No; it gives a favorable or unfavorable opinion	No; it is a right to information

France also changed its rules this year. Since 27 July 2026, French companies with a CSE and at least 50 staff consult it on share sales. This replaces the earlier duty, in smaller companies, to inform each employee directly. The change comes from the French law of 26 May 2026 on simplifying economic life.

How does works council advice shape an acquisition timeline in the Netherlands?

Works council advice usually starts once one buyer remains, often around the letter of intent. It ends before the purchase agreement binds. In between sit the union step, the advice itself and any one-month wait. Map all three with counsel in the signing stage, next to your other approvals. Together, they set part of the deal timetable.

In practice, many buyers sign the share or stock purchase agreement only after the advice is in. Others sign earlier under a protocol or condition that keeps the advice meaningful. Dutch lawyers debate how far conditional signing works, so counsel should choose the structure. France is stricter, since the CSE generally has to give its opinion before signing.

Meanwhile, the buyer must not direct the target’s staff before closing. Our guide to what HR can do before a deal closes shows where that line sits.

Integration can also restart the clock. A major reorganization, site move or round of job cuts after closing is a new decision under article 25. Dismissals usually bring a statutory transition payment as well. Similarly, new rules on pay, working hours or pensions generally need the council’s consent (art. 27 WOR). Our post merger integration checklist for Europe covers these later steps.

Planning works council advice into an acquisition in the Netherlands

Works council advice rarely decides whether a Dutch deal goes ahead. Instead, it decides when you can sign and how smoothly integration starts. So treat employee consultation as part of the timetable from the first serious bid. Because every deal turns on its facts, agree the exact sequence with Dutch counsel.

Octagon gives US acquirers a compliant way to employ and move people into Europe, starting in the Netherlands. We can employ your first Dutch hires and transfer them to your own entity once it is ready. As an IND recognised sponsor, we also apply for permits for the non-EU staff we employ. For the wider picture, read the briefing for US acquirers or email sales@octagon.nl.

Frequently asked questions

Does a Dutch works council have a veto on an acquisition?

No. A Dutch works council can advise on a sale but cannot block it. If the company decides against that advice, it generally has to wait one month before acting. In that month, the council may ask the Enterprise Chamber in Amsterdam to review the decision. That court can stop or reverse a decision it finds unreasonable.

Does the SER Merger Code apply to foreign buyers?

Yes, in most cases. The code covers deals involving a Dutch-registered enterprise with at least 50 employees. Dutch group members with 50 employees together also count. It binds each party to the agreement that transfers control, so a US buyer that signs is generally covered. Deals inside one group and transfers involving fewer than 10 employees fall outside it.

Is works council advice needed in a share deal?

Usually, yes. Dutch law gives the works council an advice right on any planned transfer of control. Selling most of a company’s shares transfers control. The target’s council therefore generally advises, even though its employer stays the same. A buyer’s Dutch subsidiary with its own works council may need its advice too.