Sertus vs HR Acuity: Built for Canadian Labour Relations
HR Acuity is a broad US employee relations platform — strong on investigations, discipline, and ER case management. Sertus is built for the work that determines arbitration outcomes — grievances, collective agreements, and Canadian labour law. Designed by the co-author of Canadian Labour Arbitration (Brown & Beatty).
Broad employee relations vs. deep labour relations
HR Acuity built its reputation on giving employee relations teams a consistent way to manage investigations, discipline, EEO cases, and the broader catalogue of employer-side ER work. For a large US-based employer with a wide caseload across HR, ER, and investigations, that breadth is the point.
Canadian unionised workplaces have a different centre of gravity. Grievances are not one case type among many — they are the workflow that runs through the collective agreement, the step procedure, the arbitration calendar, and the cost of getting it wrong. Each province has its own labour relations act, its own timelines, and its own arbitrator roster. Generic ER software is not built around any of that.
Sertus is purpose-built for that depth. It parses Canadian collective agreements in English and French, links each grievance back to the specific articles in play, tracks the step timelines the agreement defines, and assesses each case under Canadian arbitration standards. The platform is built by the co-author of Canadian Labour Arbitration — the reference text Canadian arbitrators cite — so the model understands how Canadian arbitration actually works.
Where each platform is strongest
Canadian labour law
Sertus: Provincial legislation, Canadian arbitration practice, bilingual support, Canadian data residency.
HR Acuity: US-focused. Built around US ER frameworks and federal employment law.
Grievance & arbitration depth
Sertus: Purpose-built. Step procedures, deadlines, agreement-linked analysis, and arbitration prep.
HR Acuity: One case type among many — investigations and discipline are the centre of the product.
Collective agreement intelligence
Sertus: Parses agreements and links each grievance to the relevant articles. Natural-language search.
HR Acuity: Agreements treated as reference documents — not natively analysed.
Who it serves
Sertus: Both unions and employers. Joint employer-union committees see a shared record.
HR Acuity: Employer-side only.
Investigations breadth
Sertus: Focused on grievances, complaints, and arbitration. Not built as a general investigations tool.
HR Acuity: Strong. Investigations, EEO, discipline, and broader ER case management.
AI focus
Sertus: Grievance-specific: case assessment, agreement analysis, evidence fact extraction, draft correspondence, precedent search.
HR Acuity: ER-broad: trends, risk patterns, and investigation support.
When each platform makes sense
For a US-based employer running a broad ER, investigations, and discipline programme — and where union grievances are a minority of the caseload — HR Acuity is a strong fit. The breadth of workflows and the depth of investigations tooling is the point.
For a Canadian organization — employer or union — where the grievance caseload is the work, where collective agreements determine outcomes, and where Canadian arbitration is the endpoint, Sertus is the better fit. The platform is built around the agreement, the procedure, and the arbitration standard rather than around generic ER case management. Related reading: grievance management, labour relations software, and AI case assessment.
Last updated: May 2026
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