Introduction. The respondent must deliver an answer or statement in response once a notice of arbitration has been filed. This document confirms the respondent’s position on jurisdiction, identifies the issues in dispute, and responds to the claimant’s factual and legal assertions. The timing for delivery of the answer and counterclaim is set by statute or the applicable institutional rules. Depending on those rules, the answer may also include the respondent’s nomination of an arbitrator and any preliminary objection.
The answer remains an important opportunity to frame the dispute from the respondent’s perspective and to signal procedural or substantive concerns. The level of detail of an answer is a strategic choice. Some respondents prefer a concise filing that preserves flexibility, while others use the answer to shape the arbitral tribunal’s early understanding of the case. Under the Ontario Arbitration Act, the legislation refers to “statements” rather than an “answer,” but it is generally understood that the respondent must provide a written response to the notice to arbitrate. The terminology is of little consequence.
Asserting a counterclaim. A counterclaim is a claim brought by the respondent against the claimant within the same arbitration. Rather than limiting itself to defending the original claim, the respondent advances its own affirmative claim for relief. Counterclaims may emerge after document production or further factual development reveals additional issues in dispute. In-house counsel must be attentive to the applicable procedural rules, as some arbitral institutions impose strict time limits on when counterclaims may be asserted. A counterclaim can strengthen the respondent’s negotiating position, broaden the scope of the arbitration, or shift the focus of the dispute. A counterclaim can also increase the complexity, duration, and cost of the proceeding. These considerations should be discussed with external counsel to ensure that the counterclaim is managed strategically.
The applicable rules may impose content requirements. The procedural rules governing answers and counterclaims vary across institutions. Most require a concise statement of the facts and legal grounds supporting the respondent’s position, though some are more prescriptive than others. Certain rules allow the respondent to reserve the right to elaborate its case in a later pleading, while others expect a fuller articulation of the defence and any counterclaims at the outset. Understanding these requirements is essential to avoid inadvertent waivers or procedural disadvantage.
Noting in default is not an option. Arbitration does not treat non‑participation the same way as court litigation. There is no concept of noting a party in default and no automatic default judgment. However, a respondent cannot ignore the process without consequence. Most arbitration statutes and institutional rules allow the arbitral tribunal to proceed to a hearing on the merits even if a party fails to participate, provided the absent party was properly notified and given a fair opportunity to be heard. The arbitral tribunal will then decide the case based on the evidence and submissions available. Almost all institutional rules reinforce this approach. Many specify that if a respondent does not file an answer or fails to appear, the arbitration continues and the arbitral tribunal may issue an award. The claimant must still prove its case, and the arbitral tribunal must remain satisfied that the evidence supports the relief sought. The absence of a formal default mechanism reflects the consensual nature of arbitration and its emphasis on fairness rather than punishment.