Arbitral award without a signature: formal defect and setting aside

When an arbitrator's signature is missing, Section 606 ZPO provides a specific formal rule: in a panel, the signatures of the majority may generally be sufficient. The award itself must state the impediment preventing the remaining signatures.

The missing signature does not answer the whole legal question. The complete award, the number of arbitrators, the signatures present, any impediment note and any different agreement by the parties must be reviewed together.

This article addresses only the formal issue of the signature and its treatment in a possible setting-aside action. The merits, assessment of evidence and right-to-be-heard issues are separate questions.

What formal requirements Section 606 ZPO sets for an award

Section 606(1) ZPO requires an arbitral award to be made in writing and signed by the arbitrator or arbitrators. Unless the parties have agreed otherwise, the signatures of the majority of all members may be sufficient in a tribunal with more than one arbitrator, provided that the chair or another arbitrator records the impediment preventing the missing signatures on the award.

The provision also generally requires reasons. The award must state the date on which it was made and the seat of the tribunal determined under Section 595(1) ZPO. Each party must receive a copy signed in accordance with this rule. These elements therefore belong to the same formal review as the signatures.

When the majority signatures may be sufficient

The majority rule concerns the signatures and does not replace a review of the tribunal's composition or decision-making. First establish how many members the tribunal had and how many signatures appear on the award that was delivered. Then check whether the chair or another arbitrator recorded the specific impediment to the missing signatures on the award.

The parties' agreement or applicable procedural rules may depart from the statutory default. The agreement, appointment documents and complete award must therefore be read together. A single unsigned page, viewed without the rest of the file, does not support a reliable conclusion.

Why the formal defect must be separated from the decision itself

A missing signature concerns the form required by law. A separate question is whether the tribunal was properly constituted and whether the decision was made under the applicable rules. The role of the chair or another arbitrator may also require separate examination.

The article on the majority decision of an arbitral tribunal explains voting and majorities in greater detail. This article remains focused on the signature requirement and the impediment note. That distinction helps prevent a signature issue from being treated prematurely as a merits error.

How a possible setting-aside action under Section 611 ZPO is assessed

Under Section 611(1) ZPO, the only remedy against an arbitral award is an action for judicial setting aside. Section 611(2) lists the grounds. One ground concerns a tribunal whose formation or composition conflicts with a statutory provision or a permissible agreement of the parties. Whether a specific signature defect falls under that or another ground requires a review of the complete award and the procedural record.

Section 611(4) ZPO generally provides a three-month period for the action. The period starts when the claimant receives the award or an additional award. Anyone identifying a formal defect should therefore secure proof of delivery and the date of receipt immediately. The period alone does not determine which version was delivered or which ground is relevant.

Which documents matter for the formal review

The arbitration agreement, appointment documents, applicable procedural rules, complete award and delivered copy belong together for an initial assessment. Mark every signature present, the missing signature and the exact wording of the impediment note. Add proof of delivery and a short chronology.

If setting aside is being considered, also record whether the parties agreed a different form and whether an additional award exists. The arbitral-award focus page provides context on the further steps concerning effect and enforcement. Subscribe to BRANDaktuelle Rechtsnews for new articles and legal updates from the firm.

Frequently asked questions about an unsigned arbitral award

Is an arbitral award automatically ineffective if one arbitrator did not sign it?

No. Section 606(1) ZPO generally allows the signatures of the majority in a panel if the impediment to the missing signatures is recorded on the award and the parties have not agreed otherwise. The complete file remains decisive.

What must the impediment note contain?

The award must identify the impediment preventing the missing signatures. Whether the wording fulfils that function can be assessed only by reading the complete award and the procedural circumstances.

What period applies to a possible setting-aside action?

Section 611(4) ZPO generally provides three months from receipt of the award or an additional award. Proof of delivery and the date of receipt should therefore be secured immediately.

Next step

Contract, arbitration clause, correspondence and deadlines should be collected. It can then be assessed whether negotiation, preservation or arbitration is central.