You just received a workplace complaint. Harassment, discrimination, a code of conduct breach — something that demands investigation. Your first instinct is to call a lawyer. That instinct will cost you $25,000 to $75,000 and take two to six months.
For roughly 80% of workplace investigations, there's a better path. Not a shortcut — a right-sized approach that delivers the same legally defensible outcome at a fraction of the cost and timeline.
This guide lays out every alternative to hiring a law firm for workplace investigations in Ontario, compares them honestly, and helps you decide which one fits your situation.
Key Takeaways
What you'll learn in this guide:
- Why law firms are overkill for most workplace investigations — and when they aren't
- Five alternatives to law firm investigations, with honest pros and cons for each
- A cost comparison table across all investigation approaches
- A decision framework to match your situation to the right investigation model
- When you should absolutely still hire a law firm (we're transparent about this)
Why Employers Look for Alternatives
Three forces drive employers away from the default law firm model.
Cost. Law firms bill at $425–$625 per hour for investigation work, with total costs routinely reaching $25,000–$75,000 per investigation. For organizations under $100 million in revenue — the vast majority of Ontario employers — this represents a disproportionate spend relative to the issue being investigated. A code of conduct violation that should cost $8,000 to investigate shouldn't require a $35,000 legal engagement.
Speed. Law firms operate on litigation timelines. They're thorough, but thoroughness without efficiency creates a different problem: delayed resolution. Employees wait months for answers. Witnesses forget details. The workplace dynamic deteriorates while everyone waits for the report. The OHSA requires investigations to be conducted "in a timely manner" — six-month timelines don't meet that standard.
Accessibility. Law firms write for tribunals, not for the employer who needs to understand what happened and what to do next. Investigation reports laden with legal hedging and Latin phrases don't help an HR director explain findings to a board or implement corrective action. Employers need clarity, not case law citations.
None of this means law firms do bad work. They do excellent work — but it's calibrated for courtrooms, not for the everyday workplace complaints that constitute the vast majority of investigation needs.
Alternative 1: Independent HR Investigation Firm
This is the primary alternative for most Ontario employers, and it's where the market is moving.
What it is. An independent firm that specializes in workplace investigations, led by certified HR professionals (CHRP, CHRL) rather than lawyers. These firms conduct investigations using the same methodology — structured interviews, evidence analysis, credibility assessment, findings reports — but without litigation overhead.
How it works. You engage the firm when a complaint arrives. They assess scope, propose an investigation plan with fixed or estimated fees, conduct interviews, analyze evidence, and deliver a written findings report. The report follows the same substantiated / not substantiated / partially substantiated framework that law firms use, because the evidentiary standard is the same.
Pros:
- 40–60% lower cost than law firm investigations — the same investigation that costs $35,000 at a law firm costs $12,000–$18,000 with an independent HR investigation firm
- Faster timelines: 2–6 weeks vs. 2–6 months, because investigators aren't juggling litigation caseloads
- Reports written for the employer audience, not for tribunals — clear language, actionable recommendations
- Deep HR expertise means investigators understand workplace dynamics, organizational culture, and remediation (not just legal liability)
- Fixed-fee or capped-fee billing models eliminate the hourly billing incentive to extend investigations
- Post-investigation support: help implementing findings, monitoring for retaliation, updating policies
Cons:
- No solicitor-client privilege — investigation report could be disclosed in litigation or tribunal proceedings
- May not be appropriate if litigation is already filed or imminent
- Investigator cannot provide legal advice or represent the organization in court
- Smaller firms may have limited geographic reach for multi-location investigations
Best for: Harassment, bullying, discrimination, misconduct, code of conduct violations, and workplace violence complaints where litigation is not already underway and solicitor-client privilege is not essential.
What to look for: CHRP or CHRL certification, formal investigation training (not just HR generalist experience), trauma-informed interview methodology, a clear investigation plan before engagement, and willingness to provide a fixed fee. See our guide on how to choose a workplace investigator for detailed evaluation criteria.
Alternative 2: Internal HR Investigation
What it is. Your in-house HR team conducts the investigation using internal resources.
How it works. An HR professional — ideally someone with investigation training — interviews the complainant, respondent, and witnesses, reviews evidence, and prepares a findings summary or report. The organization manages the entire process internally.
Pros:
- Lowest direct cost — no external fees
- Fastest to initiate — no engagement process or onboarding
- Internal investigator understands organizational context, culture, and politics
- Maintains full control over process and timeline
Cons:
- Conflict of interest risk is significant — the investigator works for the organization, reports to leadership, and may have relationships with parties involved
- Perceived bias, even if the investigation is conducted fairly, can undermine credibility of findings
- Most HR generalists lack formal investigation training — interview technique, evidence handling, credibility assessment, and report writing are specialized skills
- If the investigation is later challenged at a tribunal or in court, an internal investigation faces higher scrutiny
- The investigator's other HR responsibilities create competing priorities and delays
- Investigating a complaint involving a senior leader or HR colleague is effectively impossible internally
Best for: Low-severity policy violations, situations where the facts are largely undisputed, and minor interpersonal conflicts that don't involve protected grounds under the Ontario Human Rights Code.
Critical consideration: The OHSA requires investigations to be conducted by a "competent person." If your internal HR team lacks formal investigation training, conducting the investigation internally may create more legal risk than it avoids. The cost savings from doing it yourself are meaningless if the investigation doesn't hold up under scrutiny. For more on this distinction, see Am I Legally Required to Investigate?
Alternative 3: Solo Freelance Investigator
What it is. An individual — typically a retired HR executive, former labour relations specialist, or independent consultant — who conducts investigations on a contract basis.
How it works. You hire the individual directly. They conduct the investigation independently, typically charging by the hour or by the project.
Pros:
- Lower hourly rates than law firms (typically $125–$200/hour)
- Direct relationship with the person doing the work — no delegation to junior associates
- Many have deep subject-matter expertise from careers in HR, labour relations, or compliance
Cons:
- No organizational backup — if the investigator is unavailable, sick, or has a scheduling conflict, your investigation stalls
- Quality varies enormously — no accreditation standard exists for workplace investigators in Ontario
- Limited liability protection — solo practitioners may carry minimal professional liability insurance
- No quality assurance process — no peer review of reports, no second opinion on credibility assessments
- May lack current knowledge of evolving case law, tribunal decisions, and best practices
- No post-investigation support infrastructure
Best for: Smaller organizations with established relationships with a known, trusted investigator, and where the investigation is straightforward.
Risk factor: The biggest risk with solo investigators isn't competence — many are excellent. It's the lack of a quality framework around them. A law firm or established investigation practice has internal review processes, professional standards, and institutional accountability. A solo operator has their own judgment, full stop.
Alternative 4: Mediation Instead of Investigation
What it is. A facilitated resolution process where a neutral third party helps the complainant and respondent reach a mutually acceptable outcome without a formal investigation.
How it works. A mediator meets separately with each party, identifies interests and concerns, and facilitates dialogue toward resolution. The outcome is typically a written agreement between the parties.
Pros:
- Faster resolution — often completed in days, not weeks
- Lower cost — typically $3,000–$8,000 for a workplace mediation
- Preserves relationships — investigation is inherently adversarial; mediation seeks common ground
- Higher satisfaction rates — parties have input into the outcome rather than having one imposed
- Confidential — mediation proceedings are private and without prejudice
Cons:
- Not appropriate for serious allegations — harassment, discrimination, violence, and criminal conduct require investigation, not negotiation
- Cannot be used when there's a power imbalance between parties (manager/subordinate, executive/employee)
- Does not create a defensible record — if the same issue recurs, you have no documented findings to reference
- Does not satisfy the OHSA duty to investigate — mediation is not a substitute for investigation when investigation is legally required
- Requires voluntary participation from both parties — if the respondent refuses, mediation cannot proceed
Best for: Interpersonal conflicts, communication breakdowns, management style complaints, and situations where both parties want resolution rather than adjudication. Mediation works best when used proactively — before situations escalate to the point where investigation becomes necessary.
Warning: Some employers use mediation to avoid investigation. This is a mistake with serious legal consequences. Under the OHSA, complaints of harassment and violence require investigation — you cannot mediate your way out of a statutory obligation. See OHSA Employer Investigation Obligations for the specific requirements.
Alternative 5: HR Consulting Firm with Investigation Practice
What it is. A generalist HR consulting firm that offers workplace investigations as one service among many — alongside recruitment, compensation, training, and organizational development.
How it works. Similar to an independent investigation firm, but investigations are a secondary offering rather than a core specialization.
Pros:
- Bundled services — the same firm handling your investigations may also handle your HR projects, creating a single vendor relationship
- Moderate cost — typically between solo investigator and law firm rates
- Organizational understanding — if they're already your HR consultant, they know your policies and culture
Cons:
- Investigation is not their primary expertise — the same consultant who ran your compensation review last month is now conducting your harassment investigation
- Potential conflict of interest — if the firm provides ongoing HR services to your organization, their independence as investigators is compromised
- Quality depends entirely on the individual assigned, and rotation is common at larger consulting firms
- May lack specialized investigation training, trauma-informed methodology, or current knowledge of investigation case law
Best for: Organizations that already have a trusted HR consulting relationship and are facing a low-complexity investigation where specialized expertise isn't critical.
Comparison Table: All Options Side by Side
| Factor | Law Firm | Independent HR Investigation Firm | Internal HR | Solo Investigator | Mediation | HR Consulting Firm | |--------|----------|-----------------------------------|-------------|-------------------|-----------|-------------------| | Cost | $25K–$75K+ | $5K–$28K | Staff time only | $5K–$20K | $3K–$8K | $8K–$30K | | Timeline | 2–6 months | 2–6 weeks | 1–8 weeks | 2–8 weeks | 1–5 days | 3–8 weeks | | Legal Defensibility | Highest | High | Moderate–Low | Varies | N/A | Moderate | | Solicitor-Client Privilege | Yes | No | No | No | Without Prejudice | No | | Independence | High | High | Low | High | N/A | Moderate | | Post-Investigation Support | Limited | Strong | N/A | Limited | Limited | Moderate | | Billing Model | Hourly | Fixed or capped | N/A | Hourly or project | Flat fee | Hourly or project | | Best For | Litigation, criminal, privilege-required | 80% of investigations | Minor policy issues | Simple, known investigator | Interpersonal conflict | Low-complexity, existing relationship |
Decision Framework: Which Option Is Right for You?
Use this framework to match your situation to the right investigation approach.
Choose a law firm if:
- Litigation has already been filed or a demand letter has been received
- The allegations involve potential criminal conduct (assault, theft, fraud)
- You need solicitor-client privilege to protect the investigation from disclosure
- A regulatory body is already involved (Ministry of Labour order, Human Rights Tribunal application)
- The respondent is a C-suite executive or board member with significant legal exposure
Choose an independent HR investigation firm if:
- You have a harassment, discrimination, bullying, misconduct, or violence complaint
- No litigation is currently filed
- You need a legally defensible investigation at a reasonable cost
- Your organization is under $100M in revenue and doesn't have in-house investigation capacity
- You want fixed-fee billing with no surprises
- You need the investigation completed in weeks, not months
- You want post-investigation support (policy review, remediation guidance, follow-up monitoring)
Handle internally if:
- The issue is a minor policy violation with undisputed facts
- No protected grounds are implicated
- Your HR team has formal investigation training
- There's no conflict of interest in who would investigate
- The matter doesn't involve a manager investigating their own direct report
Use mediation if:
- The issue is interpersonal conflict, not misconduct
- Both parties are willing to participate voluntarily
- There's no OHSA obligation to investigate
- No protected grounds under the Human Rights Code are involved
- Preserving the working relationship is a priority
Engage a solo investigator if:
- You have an established, trusted relationship with a specific investigator
- The investigation is straightforward (single allegation, few witnesses)
- You're comfortable with no institutional backup or quality framework
When You Should Absolutely Still Use a Law Firm
We'd be doing you a disservice if we positioned alternatives as universally better. They aren't. Law firms are the right choice in specific, important situations.
Active or imminent litigation. If you've received a Statement of Claim, a Human Rights Tribunal application, or a demand letter, you need legal counsel directing the investigation. The investigation findings will be scrutinized in legal proceedings, and solicitor-client privilege may be essential to your defense strategy.
Criminal allegations. Allegations involving assault, sexual assault, theft, or fraud may require parallel investigations — one for employment purposes, one for law enforcement. Legal counsel coordinates this effectively. Criminal matters also raise self-incrimination considerations that HR investigators aren't trained to navigate.
Regulatory enforcement. If the Ministry of Labour has issued an order, or if a regulatory body is actively investigating your organization, legal counsel should be involved from the outset.
Executive-level respondents. When the person being investigated is a CEO, CFO, or board member, the political dynamics, media exposure risk, and potential personal liability are significant enough to warrant legal guidance alongside the investigation.
Unionized grievance arbitration. If the investigation will feed into a grievance arbitration process, legal counsel familiar with labour arbitration should be involved to ensure the investigation methodology and report meet arbitral standards.
In these situations, the cost of legal counsel isn't an unnecessary expense — it's a proportionate investment in organizational protection.
FAQ
Is an investigation by an HR consultant legally defensible?
Yes. The legal standard for workplace investigations in Ontario is that they must be conducted by a "competent person" using fair, thorough methodology. This standard applies to the quality of the investigation — not the professional designation of the investigator. Certified HR investigators (CHRP, CHRL) with formal investigation training regularly produce reports that are upheld by the Ontario Human Rights Tribunal, labour arbitrators, and courts. The key factors are methodology, impartiality, and thoroughness — not whether the investigator has a law degree.
Will I lose solicitor-client privilege if I don't use a law firm?
You can't lose what you don't have. Solicitor-client privilege only attaches when the investigation is directed by legal counsel for the purpose of providing legal advice. If you engage a law firm specifically for this purpose, the investigation communications and report may be privileged. If you use any non-lawyer investigator, the investigation is not privileged — but this only matters if the report is later sought in litigation or a tribunal proceeding. For 80% of investigations, privilege isn't needed because the matter resolves through workplace remediation, not courtroom proceedings.
Can I switch from a law firm to an independent investigator mid-process?
Generally, yes — though it depends on how far the investigation has progressed. If you're still in the planning stage, switching is straightforward. If interviews have already been conducted, a new investigator would typically need to re-interview witnesses to maintain investigation integrity. The key consideration is whether the change creates a perception of investigator-shopping. Consult with your new investigator about the cleanest handoff approach.
What if the investigation findings are challenged at a tribunal?
Investigation findings are routinely challenged in Human Rights Tribunal and labour arbitration proceedings, regardless of who conducted them. Tribunals evaluate investigations based on methodology — was it timely, thorough, fair to all parties, and based on evidence? An investigation conducted by a certified HR investigator using proper methodology will withstand the same scrutiny as a law firm investigation. What matters is the investigation process, not the investigator's professional title.
How do I explain to my board that we didn't use a law firm?
Frame it as responsible stewardship. You engaged a certified, independent investigator who delivered a legally defensible investigation at 40–60% lower cost with faster resolution. The investigation methodology met the same evidentiary standards. You right-sized the response to the situation rather than defaulting to the most expensive option. If the board asks whether the investigation will hold up, the answer is the same as it would be for a law firm investigation: it depends on the quality of the methodology, not who signed the engagement letter.
Take the Next Step
Not sure which approach fits your situation? We offer a free confidential consultation to assess your workplace complaint and recommend the right investigation model — whether that's our team, an internal approach, or yes, a law firm when the situation warrants it.
Our goal is getting you the right answer, not the most expensive one.
Book a Confidential Consultation or describe your situation and we'll respond within 24 hours.
Want to assess your situation right now? Try our free Investigation Assessment Tool — answer 7 questions and get an instant recommendation with legal references and cost estimates.
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