How to Choose an Arbitrator: A Practical Guide for Counsel and HR Professionals in Canada

Choosing an arbitrator is the single most consequential procedural decision in any arbitration. The right appointment shapes timelines, costs, and award quality; the wrong one can trigger costly challenges or a flawed outcome. This guide walks Canadian litigation counsel and HR professionals through a structured, criteria-based selection process from clause review to formal appointment.

Understanding the Arbitrator's Role Before You Select One

Arbitration as a structured alternative to court litigation has existed in Canada for well over a century, with provincial arbitration statutes tracing their roots to 19th-century commercial practice. Yet the single decision that most consistently shapes how a proceeding unfolds, who sits as arbitrator, still receives far less deliberate attention than it deserves from counsel and HR professionals.

What does an arbitrator actually do in a dispute?

An arbitrator serves as the private adjudicator of arbitral proceedings, responsible for hearing evidence, ruling on procedural motions, and issuing a written award that binds the parties. Authority flows directly from the arbitration agreement, not from a statutory appointment as it does for a judge. Ontario's Arbitration Act, in force since 1991, was among the first modern Canadian statutes to codify this consent-based framework. The arbitrator manages the entire process, from preliminary conferences through final submissions, and the quality of that management directly shapes the speed, cost, and outcome of any dispute resolution process.

How does an arbitrator's function differ from a judge or mediator?

Unlike a court judge, an arbitrator is selected by the parties and compensated privately, which makes the selection decision both a contractual and a strategic one. Both arbitrators and judges perform adjudicative functions: they evaluate evidence and produce binding legal decisions. A mediator, by contrast, plays a facilitative role and produces no binding decision whatsoever, the parties themselves must reach agreement. For counsel weighing these options, you can explore more ADR comparisons on our blog to clarify which process fits the dispute at hand.

Why the selection decision shapes the entire arbitration outcome

An arbitrator's subject-matter background, procedural preferences, and scheduling capacity directly influence timelines, costs, and the credibility of the final award. Industry data consistently shows that procedural delay is cited in over 40% of arbitration complaints, and a poorly chosen decision-maker is a leading driver of those delays. The selecting an arbitrator choice also carries downstream legal implications: Canadian courts have set aside awards where the appointing process was flawed. Reviewing the arbitrator's function and impartiality standards before you begin candidate identification gives both parties a shared framework for what the role demands and what potential disqualifying factors look like.

---. For deeper background, see California court rules on arbitrator selection.

Step-by-Step Arbitrator Selection Process

What is the single most consequential procedural choice in any arbitration? Most experienced counsel would say it is the appointment of the decision-maker. Yet many parties treat the process as an afterthought. Working through a structured, step-by-step selection process reduces the risk of a poorly matched arbitrator and costly mid-proceeding challenges.

Step 1, Review the Arbitration Agreement or Arbitration Clause

Before generating candidate names, read the arbitration agreement in full. The agreement may name an institution, incorporate a specific set of rules, or even designate an individual by name. Parties must honour those contractual criteria before exercising any independent discretion in the selection process. If the clause specifies that disputes will be resolved under ADRIC rules, those rules govern both the method of appointment and the qualifications required. For sample arbitration clause language, visit Dispute Winners to review drafting resources. Keywords such as "shall be governed by the law of Ontario" also constrain the applicable legal framework and therefore the relevant arbitrator qualifications.

Step 2, Identify the Applicable Institutional Rules and Any Mandated Criteria

Once the agreement is reviewed, identify which institutional rules apply. The rules of arbitration from the Canadian Arbitration Association, ADRIC, the AAA, BCICAC, and the ICC each have distinct appointment procedures. Some rules article provisions mandate specific nationality or language neutrality requirements in international arbitrations, particularly where one party is from outside Canada. Most institutional rules impose a 30-day window within which parties must appoint an arbitrator or the institution will do so itself. Understanding the applicable rules early prevents default appointments that neither party finds satisfactory.

Step 3, Generate a Longlist of Qualified Candidates

Sources for candidate identification include institutional rosters, bar association directories, peer referrals from trusted counsel, and specialist ADR platforms. At this stage, generating at least 6–10 names allows meaningful filtering without artificially constraining choice. A lawyer with domain-specific experience may appear on multiple rosters simultaneously, cross-referencing sources improves the quality of the longlist. A broader initial list also ensures that if one or two candidates disclose conflicts or are unavailable, the process does not stall. When selecting an arbitrator for a complex matter, the effort invested in building a robust longlist is proportionate to the stakes involved, and counsel should document their sourcing methodology in case the appointment process is later challenged.

Step 4, Conduct Conflict-of-Interest Checks and Disclosure Review

Each candidate should be asked to complete a written disclosure statement covering prior professional relationships with the parties, their counsel, and their respective law firms going back at least 3 years. The IBA Guidelines on Conflicts of Interest in International Arbitration (2014) classify conflicts into Red, Orange, and Green lists, providing a practical taxonomy widely used in Canada. The distinction between waivable and non-waivable conflicts is legally significant: a waivable conflict (Orange List) may proceed with informed consent from all parties, while a non-waivable conflict (Red List) disqualifies the candidate entirely. Impartiality and independence concerns identified at this stage are far less costly to address than a challenge raised mid-hearing. Parties should treat disclosure review as a mandatory, not optional, step.

Step 5, Narrow to a Shortlist and Confirm Availability

After conflicts are cleared, narrow the list to the top two or three candidates and confirm their availability before investing further in the selection process. A highly qualified arbitrator with no available hearing dates for 18 months may cause more harm than a slightly less senior candidate who can begin in 60 days. Send a brief email or written request to each shortlisted candidate confirming their ability to commit to a realistic hearing schedule. Availability confirmation should be documented in writing to avoid scheduling disputes later.

Step 6, Formally Appoint or Nominate the Arbitrator

The formal appointment mechanics vary by institution but typically involve a written notice of arbitration or nomination letter sent to the institution or directly to the opposing party, followed by an acceptance letter from the arbitrator. Many institutional rules also require the arbitrator to sign a declaration of independence and impartiality before the proceedings commence. Where parties agree on a candidate jointly, the appointment is straightforward; where they do not, the applicable rules activate the appointing committee. Retain copies of all correspondence, as this documentation forms part of the arbitration record and may be relevant if the award is later subject to a setting-aside application before a court.

---. For deeper background, see California employment arbitration regulations.

Key Qualifications and Criteria to Evaluate in Every Candidate

A 2022 Queen Mary University of London survey found that 76% of arbitration users ranked arbitrator experience and expertise as the most important selection factor, above institutional reputation or geographic convenience. Understanding precisely which qualifications matter, and why, equips counsel and HR professionals to evaluate candidates with rigour rather than relying on name recognition alone.

Subject-matter expertise and relevant legal knowledge

There is a meaningful distinction between legal expertise, such as familiarity with construction law or employment law, and industry or technical knowledge, such as understanding engineering standards or financial modelling. Both dimensions may be relevant depending on the subject matter of the dispute. An arbitrator with 10 or more years of domain-specific experience typically brings greater authority to complex legal questions and commands correspondingly higher daily rates, but that investment is justified for high-value or technically demanding claims. When evaluating arbitrator experience, conflicts, and fit, counsel should request a candidate's CV and a representative sample of prior awards or published decisions where these are available.

What level of arbitration experience should a candidate have?

Experience requirements should be calibrated to the complexity and value of the dispute rather than applied uniformly. Arbitrators with 3–5 years of experience may be entirely appropriate for lower-value domestic claims and bring the advantage of greater scheduling flexibility. For complex international matters, multi-jurisdictional disputes, large-scale construction claims, or matters governed by the UNCITRAL Arbitration Rules, a candidate with 10 or more years of experience as both a sole arbitrator and a panel member provides stronger assurance of procedural command. Institutional rosters typically indicate whether a candidate has served as a sole arbitrator or only as a co-arbitrator, which is relevant context when filling a chair role. Training credentials, including fellowship with recognised ADR bodies, are a secondary but useful indicator.

Independence and impartiality, what do these standards require in Canada?

Canadian law treats independence and impartiality as distinct but related obligations. Independence is an objective standard: the arbitrator must have no financial or professional ties to any party, counsel, or law firm that could compromise their judgment. Impartiality is more subjective: it concerns the absence of bias or predisposition toward a particular outcome. The ADRIC Code of Ethics, provincial Arbitration Acts, and the IBA Guidelines all reinforce these dual obligations. A protected relationship, such as a prior attorney-client retainer, may be non-waivable, while a more remote potential connection may be disclosed and waived. Canadian courts have set aside awards where conflicts were not disclosed at the outset, making early, thorough disclosure both a professional and a legal obligation for any arbitrator candidate.

Procedural skills, case-management approach, and availability

Efficient case management can materially reduce hearing time and therefore cost. Parties may request a candidate's approach to procedural timetables during a brief pre-appointment call or by sending a short written questionnaire by email. Some experienced arbitrators publish procedural protocols or practice notes online, which offer a practical window into how they manage document production, witness scheduling, and motions practice. Confirming that a candidate's approach to process aligns with both parties' expectations before appointment avoids friction once proceedings begin.

Arbitrator Qualification Criteria at a Glance

Criterion	Why It Matters	How to Verify
Subject-matter expertise	Ensures the arbitrator understands the legal and technical issues in dispute	CV review, published awards, institutional roster notes
Impartiality / Independence	Required by law and institutional rules; non-compliance can void the award	Written disclosure statement, IBA Guidelines checklist
Procedural experience	Affects hearing efficiency, timetable adherence, and cost control	References from counsel who have appeared before the candidate
Availability	Delays of 12–18 months undermine the efficiency rationale for arbitration	Written availability confirmation before shortlisting

---. For deeper background, see benefits of alternative dispute resolution.

Where to Find Arbitrators: Institutions, Rosters, and Other Sources

Selecting an arbitrator without consulting established institutional rosters is a bit like hiring a specialist surgeon by asking only your general practitioner for a name, useful, but incomplete. Canada and internationally recognised institutions maintain curated, vetted lists of qualified arbitrators that give parties a credible, structured starting point for candidate identification.

Key Canadian and International Arbitration Institutions

• ADRIC (ADR Institute of Canada)
• AAA/ICDR (American Arbitration Association / International Centre for Dispute Resolution)
• ICC (International Chamber of Commerce)
• BCICAC (British Columbia International Commercial Arbitration Centre)
• ADR Chambers
• LCIA (London Court of International Arbitration, for international matters)

Canadian arbitration institutions and their roster processes

ADRIC maintains a national roster updated annually, with arbitrators vetted for training credentials, professional standing, and relevant experience before inclusion. ADR Chambers applies a comparable vetting process at the regional level, with a strong presence in Ontario and Western Canada. Roster inclusion typically requires demonstrated arbitration training, often a minimum number of completed cases or a recognised fellowship designation, ensuring that listed candidates meet a baseline standard of competence. Counsel should review the specific criteria each institution uses for roster admission to understand the floor of qualification any listed candidate has already cleared.

How do parties use strike-and-rank lists provided by institutions?

The list selection process works as follows: the institution sends each party a list of typically 7–15 names drawn from its roster. Each party independently strikes any candidates it finds unacceptable, usually without being required to give reasons, and ranks the remaining names in order of preference. The institution then appoints the candidate with the highest mutual ranking. The AAA and ICDR use this method widely, and ADRIC's rules incorporate a similar mechanism for parties who cannot agree directly.

Peer referrals, bar associations, and specialist ADR directories

Experienced counsel can supplement institutional searches by consulting colleagues who have appeared in similar disputes, checking provincial law society referral services, and reviewing directories such as Martindale-Hubbell or specialised ADR platforms. For international matters, the ICC and LCIA publish searchable online panels that allow filtering by language, jurisdiction, and subject-matter expertise. A peer referral from a lawyer who has appeared before a candidate as opposing counsel, rather than as a nominating party, is particularly valuable, as it reflects a more objective assessment of the candidate's conduct and procedural approach. Regardless of source, every candidate identified through peer referral should still be subject to independent conflict-of-interest screening before placement on the shortlist.

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Choosing an Arbitrator for Specific Dispute Types

A generalist arbitrator who handles everything from insurance subrogation to family property division is rarely the optimal choice for any of those matters. Dispute type imposes its own demands on an arbitrator's background, sector knowledge, and procedural sensibility, and treating selection as type-neutral is one of the most consistent sources of dissatisfaction with arbitration outcomes.

Commercial and construction disputes, domain knowledge considerations

Construction disputes frequently involve multi-million-dollar claims requiring familiarity with CCDC contracts, delay analysis methodologies, and deficiency quantification. An arbitrator with legal expertise in construction law but no exposure to engineering concepts may struggle with technical expert evidence. Selecting a candidate with genuine subject-matter fit for the specific dispute type is especially important here, as the arbitrator will need to evaluate competing expert reports and exercise informed judgment on highly technical legal questions.

Workplace and employment arbitrations, sector-specific factors for HR counsel

Workplace arbitrations under provincial employment statutes or collective agreements require an arbitrator familiar with Canadian Human Rights Act obligations, employment standards legislation, and, where applicable, grievance arbitration under a collective agreement. HR professionals should prioritise candidates with a demonstrated track record in workplace investigation standards and procedural fairness requirements. In practice, this means reviewing prior awards in employment matters rather than relying solely on general arbitration credentials. The process for these disputes often involves sensitive evidence and protected-category allegations, making procedural sensitivity as important as legal knowledge.

How to choose an arbitrator for a divorce or family law matter in Canada

Family arbitration is uniquely regulated in Canada. In Ontario, the Family Law Act, s. 59.1 imposes mandatory training requirements: arbitrators conducting family arbitrations must complete a minimum of 40 hours of approved training covering domestic violence screening, procedural fairness, and family law. British Columbia imposes comparable requirements under its Family Law Act. Parties, and their counsel, should verify that a candidate holds the specific family arbitration credential, not merely general arbitration experience. An agreement to arbitrate a family matter with an unqualified arbitrator may be unenforceable under Ontario law, making credential verification a prerequisite rather than a courtesy in this context.

Does the size or value of the claim affect which arbitrator you should appoint?

Proportionality is a governing principle in arbitrator selection. Claims below $100,000 CAD are typically suited to a sole arbitrator to control costs and maintain procedural efficiency. Complex international disputes exceeding $1 million, particularly those involving multiple parties, cross-border enforcement questions, or technically dense evidence, may justify the additional cost of a 3-member panel, where the deliberative process adds value. The arbitrator's fee should be reviewed against the claim value early in the selection process to confirm that the appointment is economically rational relative to the amount in dispute.

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Common Mistakes Parties Make When Appointing an Arbitrator

In one recurring pattern seen in Canadian commercial arbitrations, a party nominates a well-known arbitrator based on a prior positive outcome, only to learn during disclosure review that the same individual had recently been retained by opposing counsel in 3 separate matters. The resulting challenge delayed the proceeding by 4 months and added significant cost.

Relying on reputation alone without conflict screening

Name recognition is not a substitute for rigorous conflict screening. An arbitrator with an outstanding professional reputation who has had recent professional contact with opposing counsel presents a disclosure issue that can, and frequently does, result in a successful challenge. The appointing committee of most institutions will remove a candidate if undisclosed conflicts emerge after appointment, triggering delays that could have been avoided with a thorough pre-appointment check. Counsel should treat conflict screening as a non-negotiable step, regardless of how well-regarded the candidate may be.

Neglecting to address arbitrator selection criteria in the original clause

Failing to specify arbitrator qualifications in the arbitration clause is consistently cited among the top drafting errors identified by ADRIC. When the clause is silent on criteria, parties are left to negotiate, sometimes contentiously, at the precise moment a dispute has already arisen and trust between them is lowest. Including a brief qualification clause (subject-matter experience, institutional affiliation, language requirements) in the original agreement dramatically reduces the friction of the appointment process. The rules of arbitration adopted by reference in the clause should be reviewed to confirm they are current, since outdated rule versions may reference superseded appointment procedures.

Overlooking scheduling capacity

A leading arbitrator's schedule may be booked 12–18 months in advance. Parties that identify only one acceptable candidate risk a lengthy delay if that individual is unavailable within the required appointment window. Best practice is to confirm availability for at least two or three candidates before finalising the shortlist. Scheduling is consistently highlighted as an underweighted factor in the appointment decision, one that has practical consequences equal to or greater than marginal differences in seniority or reputation between otherwise qualified candidates.

Treating the appointment process as bilateral when institutional confirmation is required

Some parties conduct what they believe to be a valid direct appointment between themselves, only to discover that the applicable rules article requires the institution to formally confirm the appointment before it is effective. Skipping this confirmation step does not merely create an administrative irregularity, it can render the entire appointment procedurally defective. Reviewing the applicable rules carefully, and confirming whether institutional sign-off is required, takes minutes and prevents months of delay.

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Key Takeaways

• Review the arbitration agreement first: the clause may constrain your selection criteria, mandated institutional rules, and appointment deadlines before you exercise any discretion.
• Run conflict checks early and thoroughly: use the IBA Guidelines (2014) Red, Orange, and Green list taxonomy for every candidate, covering at least 3 years of prior professional relationships.
• Match the arbitrator's profile to the dispute type: subject-matter expertise, sector knowledge, and training credentials matter differently in construction, employment, and family arbitration contexts.
• Confirm scheduling availability before shortlisting: a 12–18 month delay caused by an unavailable first-choice candidate undermines the efficiency rationale for choosing arbitration over court litigation.
• Document every step of the appointment process: institutional confirmation letters, disclosure statements, and acceptance letters form part of the arbitration record and are relevant if the award is later challenged.

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FAQ

What is the difference between a sole arbitrator and a panel of three?

A sole arbitrator handles the entire proceeding independently, which reduces cost and scheduling complexity. A three-member panel, typically one arbitrator nominated by each party and a chair selected jointly or by an institution, adds deliberative rigour and is better suited to high-value or complex international disputes. Claims below approximately $100,000 CAD generally do not justify the additional cost of a panel.

Can parties choose any person they want as an arbitrator?

Generally, yes, provided the chosen individual meets any criteria specified in the arbitration agreement or applicable institutional rules. However, the candidate must:

• Have no disqualifying conflicts of interest
• Be willing and able to accept the appointment
• Meet any statutory requirements (e.g., approved training for family arbitration in Ontario)
• Be confirmed by the administering institution where required by the rules

How long does the arbitrator appointment process typically take?

Under most institutional rules, parties have 30 days from the notice of arbitration to agree on an arbitrator. If they cannot agree, the institution appoints one, which typically adds another 2–4 weeks. Total time from initiating the process to a confirmed appointment commonly ranges from 4 to 8 weeks, though complex multi-party matters can take longer.

What happens if parties cannot agree on an arbitrator?

If the parties cannot agree and no other mechanism applies, the administering institution exercises its appointment authority under its rules. In ad hoc arbitrations, provincial Arbitration Acts allow either party to apply to a court for appointment. Canadian courts treat these applications as routine and typically appoint within a reasonable timeframe to avoid prejudicing either party.

Are arbitrator fees disclosed before appointment?

Arbitrator fees are typically disclosed or negotiated before the appointment is finalised. Institutional arbitrations often set fees according to a published schedule based on claim value or daily hearing rates. In ad hoc proceedings, counsel should obtain a written fee confirmation, covering daily rates, cancellation policies, and administrative charges, before the arbitrator accepts the appointment to avoid disputes over compensation later.

What is the UNCITRAL Arbitration Rules and when do they apply?

The UNCITRAL Arbitration Rules, developed under the auspices of the United Nations Commission on International Trade Law, are a set of procedural rules for ad hoc international arbitrations. They apply when the parties' arbitration agreement incorporates them by reference. They are widely used in cross-border commercial disputes involving Canadian parties and provide default mechanisms for arbitrator appointment, challenge procedures, and award issuance where no institutional framework has been chosen.