Crisis Situations and the Justice System in Ontario: A Guide for Families and Support Workers

If you’re supporting an adult with a developmental disability in Ontario, one of the hardest things to think about — but one of the most important to prepare for — is what happens if they come into contact with police or the courts, whether during a mental-health crisis, as someone accused of an offence, or as a victim of a crime. This guide walks through why the risk is higher than most families realize, which numbers to call before a crisis turns into a 911 call, the rights and accommodations that exist on both the accused and the victim side, and the concrete steps you can take now to make an encounter safer. It’s general information, not legal advice, written for families and support workers in Waterloo Region, Hamilton, and Halton — and it uses person-first language throughout (“adults with a developmental disability,” “people we support”).

The short version

• Elevated risk is real and well-documented. Adults with a developmental disability come into contact with the justice system far more often than the general population — as suspects, as victims, and during crises. In one Canadian survey of autistic adults (Salerno & Schuller, York University, Journal of Autism and Developmental Disorders, 2019), more than three-quarters reported at least one lifetime police interaction and 53% reported four or more. Communication barriers, a tendency toward compliance and agreement, and behaviours misread as non-compliance or intoxication can make fast-moving police encounters dangerous.
• In a mental-health or behavioural crisis, a non-police or co-response option is usually safer. All three AIM regions have mobile crisis teams that pair mental-health workers with police (Waterloo Region’s IMPACT; Hamilton’s MCRRT/COAST; Halton’s COAST/MCRRT), plus 24/7 crisis lines and the national 9-8-8 Suicide Crisis Helpline (launched November 30, 2023). Calling a crisis line first — rather than 911 — is often the better first move when there is no immediate danger.
• As suspects, people we support are uniquely vulnerable to false confessions and to giving up rights they don’t understand. People with intellectual disabilities are heavily over-represented among documented false confessions. Diversion away from prosecution does exist in Ontario for accused persons with a developmental disability, but availability is uneven.
• As victims, the justice system too often fails them. Crimes — especially sexual assault — are under-reported and under-prosecuted, and witnesses face a “credibility discount.” Criminal Code testimonial aids (a support person, a screen, CCTV, video-recorded statements) exist and are presumptively available to witnesses with disabilities, but for adults they’re applied for relatively rarely.
• Preparation works. Registering with a local police Vulnerable Persons Registry, carrying a disclosure/communication card, teaching the person how to interact with police, and knowing the crisis numbers before a crisis hits are the highest-value preventive steps you can take.

What every family and support worker should know

1. The risk is structural, not incidental. Beyond the autistic-adults survey above, a separate York University study of people with developmental disabilities and their caregivers found three-quarters of the sample reported at least one lifetime police interaction, and that those with a less-apparent disability may be at greater risk of an adverse encounter. The mismatch is between how justice institutions operate (fast commands, an expectation of immediate compliance, questioning designed to elicit admissions) and how many people we support communicate and behave.
2. Behaviours are misread. Stimming, not responding to commands, avoiding eye contact, echolalia, flat affect, or slow processing can be misinterpreted by officers as intoxication, defiance, deception, or threat — and can escalate a use-of-force response.
3. Agreeing with authority is a trap in interrogation. A tendency to agree with authority figures, to tell them what they seem to want to hear, and difficulty understanding the right to silence or to a lawyer create genuine danger of a false confession and of unknowingly waiving rights.
4. Crisis-response alternatives exist in all three regions and should be the default when there’s no immediate danger. Know the numbers now (below).
5. Both the victim pathway and the accused pathway have accommodations and diversions — but they must be requested, and awareness among frontline actors is uneven. A support person’s job is to disclose the disability early, ask for accommodations, and get legal help fast.
6. The correctional dimension confirms the pattern. People with intellectual and developmental disabilities are over-represented in Ontario’s correctional and forensic systems, arrive with more trauma and health complexity, and face harder re-entry.

Some closely related topics live in other AIM guides: the legal mechanics of capacity and fitness, and the rights framework generally, are covered under Rights, Accessibility, and Anti-Discrimination Law for Adults with Developmental Disabilities in Ontario; de-escalation as an everyday support method is covered under Positive Behaviour Support in Ontario: A Plain-Language Guide for Families; and clinical mental-health-crisis care and diagnostic overshadowing are covered under Navigating Healthcare for an Adult with a Developmental Disability in Ontario. Abuse and exploitation epidemiology and safeguarding are covered in AIM’s dignity-of-risk and safeguarding guide — here we focus on the justice-system response.

Why this population is at elevated risk

People with developmental disabilities are at increased risk of contact with the criminal justice system, whether as suspects, victims, or witnesses. The drivers are consistent across the research:

• Communication barriers. Officers and the person may effectively be “speaking different languages.” Differences in expressive and receptive communication mean commands may not be understood, and the person’s responses may not be understood by police.
• Acquiescence and compliance. Social naivety and a learned tendency to defer to authority increase susceptibility to influence, leading questions, and pressure.
• Difficulty understanding rights. Research on people with intellectual disabilities (Full Scale IQ 60–75) found they were less likely than others to grasp that a police interview and a false confession could have serious consequences.
• Behaviours misread as non-compliance or intoxication. Involuntary movements, not following commands, or atypical affect can be read as suspicious or dangerous, driving escalation.
• A less-apparent disability can mean higher adverse-encounter risk. The York University survey found people with a milder or less-visible disability may be at greater risk of an adverse police encounter, because their disability isn’t recognized and accommodations aren’t made.

This is the friction point that runs through everything below: justice institutions are built around fast compliance and verbal self-advocacy, which is precisely what many people we support cannot deliver under stress.

When there’s a crisis: who to call

How crises escalate. When police respond to a behavioural or mental-health crisis without disability awareness, the standard playbook — loud commands, rapid physical control — can intensify sensory overload and fear, provoking the very “resistance” that triggers force, restraint, or worse. The Ontario Human Rights Commission has repeatedly documented that people with mental-health disabilities experience disproportionate use of force, compounded for racialized people. National reporting reinforces the stakes: CBC News’ “Deadly Force” investigation (April 2018), a database of 461 fatal encounters between 2000 and 2017, found that “70 per cent of the people who died struggled with mental health issues or substance abuse or both” — “42 per cent … were mentally ill or distressed, while 45 per cent were under the influence of drugs or alcohol.”

The case for alternatives. Statistics Canada estimates police have about one million encounters every year with people who have a mental or substance-use disorder (against roughly five million Canadians who have some form of run-in with police each year), and police leaders themselves have described officers as having become “psychiatrists in blue.” A non-police or co-response first response is often safer and more effective. Here are the verified, current options for the AIM regions.

National — 9-8-8 Suicide Crisis Helpline. Launched November 30, 2023; call or text 9-8-8, 24/7, bilingual, free; led by CAMH (the Centre for Addiction and Mental Health). As of late November 2025 it had answered more than 750,000 calls and texts. Health Minister Marjorie Michel announced at CAMH on January 16, 2026 that “the federal government will invest up to $120.2 million over the next two years to support the continued operations of the 9-8-8: Suicide Crisis Helpline.” (This is for a suicide crisis specifically; other supports may be referred.)

Waterloo Region:

• Here 24/7 (1-844-437-3247): the regional 24/7 crisis line and mobile crisis service — the front door to addictions, mental-health, and crisis services across 11+ agencies; ages 16+.
• IMPACT (Integrated Mobile Police and Crisis Team): CMHA Waterloo Wellington paired with Waterloo Regional Police / Guelph Police / Wellington County OPP. Mental-health workers embedded with police respond to crisis calls; the model has operated in Waterloo Region since 2013. It’s reported to divert roughly 75–80% of calls away from hospital. Its limitation: it doesn’t operate overnight and can’t reach every call because of funding — historically responding to about 51% of live calls.
• Crisis Call Diversion (CCD): a newer WRPS/CMHA pilot that embeds an IMPACT worker in the police communications centre to divert appropriate mental-health calls away from a dispatched police response; funded as a three-year pilot.

Hamilton:

• COAST (Crisis Outreach and Support Team): St. Joseph’s Healthcare Hamilton paired with Hamilton Police (established 1997 following the Zachary Antidormi inquest). A 24/7 crisis line plus a multidisciplinary mobile team (a plainclothes officer and a mental-health worker) for non-urgent crisis.
• MCRRT (Mobile Crisis Rapid Response Team): formed 2013; a uniformed officer and a mental-health worker respond to 911 crisis calls as first responders. Pilot data showed a 49% reduction in people in crisis brought to hospital versus a police-only model; in 2023, MCRRT responded to 3,585 calls with roughly 84% de-escalated or diverted from emergency departments.

Halton:

• COAST Halton crisis line (24/7, answered by a mental-health crisis worker), funded by CMHA Halton and the Ontario Ministry of Health; serves residents 16+.
• MCRRT in partnership with St. Joseph’s Healthcare and Halton Healthcare — officers and mental-health professionals working together to de-escalate crises.
• Call Diversion program with CMHA Halton (Monday–Friday, 10 a.m.–6 p.m.): non-emergency 9-1-1 mental-health calls, with the caller’s consent, transferred to a CMHA professional.

A practical rule of thumb: if there is no immediate danger to life, call the regional crisis line (Here 24/7 in Waterloo; COAST in Hamilton and Halton) or 9-8-8 before 911. If you must call 911, disclose the developmental disability and any mental-health crisis immediately, and ask for a mobile crisis team or a crisis-trained officer.

If the person is a suspect or accused

Vulnerability in interrogation. People with intellectual disabilities are markedly over-represented among proven false confessions. According to the U.S. National Registry of Exonerations, from 1989 to 2020, 70% of people who falsely confessed and were later exonerated had a mental illness or intellectual disability; and while people with an intellectual disability made up only about 5% of exonerees, 72% of them had falsely confessed, versus 9% of exonerees with no reported disability. The mechanisms are suggestibility, compliance, acquiescence, and confabulation, combined with an impaired understanding of the police caution and of legal rights. Many disabilities are “hidden,” so police may not realize the person can’t understand a rights waiver. (These are U.S. data; Canadian-specific false-confession statistics are sparse, but the underlying vulnerabilities are the same.)

Fitness and criminal responsibility (high level only). Canadian law presumes an accused is fit to stand trial. Being “unfit to stand trial” (Criminal Code s. 2) means being unable, on account of mental disorder, to understand the nature, object, or possible consequences of the proceedings, or to communicate with counsel. “Not criminally responsible on account of mental disorder” (NCRMD, s. 16) applies where a mental disorder rendered the person incapable of appreciating the nature and quality of the act, or of knowing it was wrong. Both determinations, and the role of the Ontario Review Board, are legal and clinical processes — the mechanics are covered under Rights, Accessibility, and Anti-Discrimination Law for Adults with Developmental Disabilities in Ontario. Families should know these outcomes are not “getting off”: they can lead to indefinite Review Board jurisdiction.

Diversion for accused persons. Ontario’s Crown Prosecution Manual explicitly directs that accused persons with a mental illness — expressly including developmental disabilities and concurrent disorders — should have the same access to community justice programs as other accused, with an emphasis on restorative and remedial measures as alternatives to prosecution, consistent with public safety. Serious offences (for example, murder, manslaughter, criminal negligence causing death) are excluded. Mental-health diversion is a voluntary agreement in which charges can be withdrawn or stayed if the person engages a treatment or support plan; it typically requires a “nexus” between the disability and the offence, approved by the Crown. Locally, CMHA branches run court-support and diversion services — for example, CMHA Hamilton’s Mental Health Court Support Services, which serves people 18+ with a serious mental illness and/or developmental disability, and CMHA Waterloo Wellington’s Mental Health and Justice Services. Availability and thresholds vary by courthouse.

If the person is a victim or witness

Higher victimization, under-reporting, and under-prosecution. People with disabilities are victimized at far higher rates. Statistics Canada’s Juristat Criminal victimization in Canada, 2019 reports: “Rates of violent victimization were almost 3 times higher among those with a disability (141 incidents per 1,000) than among those without (53 per 1,000),” with people who have cognitive or mental-health-related disabilities victimized roughly four times more often than those without. (The broader epidemiology of abuse and exploitation lives in AIM’s dignity-of-risk and safeguarding guide; here we focus on the justice-system response.)

Under-reporting. Sexual assault is Canada’s least-reported violent crime — Statistics Canada found only about 6% of sexual assaults came to police attention in 2019. For people with disabilities the gap is worse: DAWN Canada’s 2022 Community Impact Statement notes that abuse of women with disabilities “often goes unreported (1 in 30 according to one study),” due in part to reliance on others, “including those that may be exploiting them.” The Office of the Federal Ombudsperson for Victims of Crime has stated that “survivors with disabilities may be more likely to be perceived as uncooperative, unreliable witnesses, or mentally unstable by police or justice actors, resulting in their complaints being dismissed.”

The “credibility discount” and under-prosecution. Even when a crime is reported, crimes against people with intellectual disabilities are under-prosecuted because of assumptions that these witnesses are unreliable. In the leading Canadian academic analysis (Benedet & Grant, “Taking the Stand,” Osgoode Hall Law Journal, 2012), the authors warn that confrontational, leading cross-examination “is likely to unfairly undermine [a woman with a mental disability’s] credibility and to result in unjustified acquittals or in prosecutors deciding not to pursue a case.” The Supreme Court of Canada has pushed back on the stereotype: in R. v. Slatter, 2020 SCC 36, the Court restored the conviction of a man who sexually assaulted a woman with an intellectual and developmental disability and directed that courts assess a witness’s own ability to recall and recount events, rather than rely on expert generalizations that “having an intellectual disability makes a person less reliable” (as ARCH Disability Law Centre’s Kerri Joffe put it). This built on R. v. D.A.I., 2012 SCC 5, where a complainant’s competency to testify (understanding the oath) had been challenged — an expectation, critics note, “only made of people labelled with intellectual disabilities, not all witnesses.”

Testimonial accommodations (Criminal Code). These exist to help vulnerable victims and witnesses testify fully, but they must be requested — by the Crown or the witness:

• A support person while testifying (s. 486.1).
• Testimony behind a screen or from outside the courtroom by CCTV (s. 486.2). For witnesses under 18, or witnesses who have difficulty communicating evidence because of a mental or physical disability, these are presumptively available on request unless they would interfere with the proper administration of justice; for other adults they’re discretionary, based on whether they would facilitate a “full and candid account.”
• A video-recorded statement admitted as evidence for an adult who has difficulty communicating because of a disability (s. 715.2; available for such adults since June 30, 1998).
• Court-appointed counsel to cross-examine where the accused is self-represented, protecting the witness from being cross-examined directly by the accused (s. 486.3).
• The current framework was clarified by Bill C-2 (in force January 2, 2006) and reinforced by the Canadian Victims Bill of Rights (in force July 23, 2015).

But adults rarely get them. Department of Justice Canada reviews (Bala et al., 2011; Ainslie, “Testimonial Support for Vulnerable Adults (Bill C-2): Case Law Review 2009–2012,” 2013) found that applications for testimonial aids for vulnerable adults are relatively rare — especially the discretionary ones — and, while generally successful, less likely to be granted than for children. A companion 2013 DOJ study interviewing Crown prosecutors and victim-services providers found “few adults with disabilities in the witness population are identified in need of a testimonial accommodation,” that in many jurisdictions the number of vulnerable adult witnesses was “not known,” and that screens and support persons were applied for more often than CCTV (limited partly by equipment gaps in northern and circuit courts). The practical lesson: tell the Crown and police early that a witness needs accommodations, so there’s time to apply.

Preventing and preparing

Vulnerable Persons Registries — verified for all three regions:

• Waterloo Region: the Vulnerable Persons Registry (VPR) at vulnerablepersonsregistry.ca — a community-based initiative in partnership with Waterloo Regional Police (running since July 2015; a collaborative multi-service registry live since December 15, 2016), managed with community partners including KidsAbility and the Waterloo Region Family Network. It’s free and voluntary; it stores a photo, physical description, communication needs, routines, emergency contacts, and sensitivities; you can self-register, or a parent, guardian, or substitute decision-maker can register on the person’s behalf. Records are purged if they’re not updated after three years.
• Hamilton: Hamilton Police Service operates a vulnerable-persons registry program alongside its Crisis Response Branch (COAST/MCRRT). Confirm the current program name and enrolment route directly with HPS, as branding and intake for these programs change.
• Halton: the Halton Regional Police Service Vulnerable Person Registry — a family member or caregiver submits a physical description, habits, communication issues, and tendencies (for example, to wander); the information becomes available to officers within 3–4 days and must be renewed (a reminder is sent one month before expiry). Contact the HRPS Victim Services Unit.

How registries work: they give officers quick access to critical information — how to communicate, who to call, sensitivities — when responding to or looking for a registered person. They’re voluntary and do not shield anyone from accountability for criminal conduct.

Disclosure and communication cards. A wallet card or “autism alert” card lets a person disclose their disability and communication needs without having to explain verbally under stress. A best practice built into these card programs: do not reach for the card until the officer says it’s okay — tell the officer where it is and ask before reaching. Cards are tools, not guarantees; their effectiveness depends on the responder’s understanding, and research shows responses vary.

Teaching the person how to interact with police. Practise, with trusted people: staying still, keeping hands visible, not running or making sudden movements, disclosing the disability, and asking for a support person. Consider a medical-ID bracelet for a non-verbal individual.

In the moment: practical guidance

For the person (rehearse this in advance):

• Try to stay calm; keep hands visible; don’t run or make sudden movements.
• Say “I have a disability” and, if you use one, “I have a card that explains” — then ask before reaching for it.
• Ask for a support person, and if arrested or questioned, ask for a lawyer and say you want to stay silent until they arrive.

For families and staff on scene:

• If you called for help, meet the responders and disclose the developmental disability, the person’s communication style, their triggers, and what de-escalates them immediately.
• Ask for a mobile crisis team or a crisis-trained officer if one is available.
• Request to stay as a support person; explain that your presence lowers the risk of escalation.
• Don’t offer information that could incriminate the person; if they may be a suspect, ask for a lawyer or duty counsel before any questioning.
• Document what happened afterward (names, badge numbers, times).

De-escalation as an ongoing, everyday support method is covered under Positive Behaviour Support in Ontario: A Plain-Language Guide for Families; the guidance above is limited to the police-contact moment itself.

When someone is in the correctional system

Adults with intellectual and developmental disabilities are over-represented across Ontario’s criminal-justice and forensic systems. A population-based ICES/CAMH study (Matheson, Lunsky et al., Journal of Applied Research in Intellectual Disabilities, 2022) that linked health and correctional data found an IDD prevalence of 2.1% among people incarcerated federally in Ontario, versus 0.9% in the non-incarcerated group. A 2024 study (Lunsky et al., Criminal Behaviour and Mental Health) found IDD over-represented across four sectors — federal corrections, provincial corrections, forensic inpatient, and community mental health — at rates several-fold above the roughly 0.7–0.9% expected. People with IDD arrived with more traumatic brain injury, mental illness, and substance-use disorders; while incarcerated they were more likely to incur serious institutional disciplinary charges; and after release they faced greater risk of emergency-department visits and psychiatric or acute hospitalization. Correctional Service Canada policy (Guideline 800-10) recognizes intellectual disability as a vulnerability requiring accommodation and adapted programming. Re-entry is harder because disability supports aren’t mandated on release.

Your next steps

Here are staged, concrete steps you can take, with the benchmarks that would tell you to revisit them.

Now, this month — for every person AIM supports:

1. Enrol in your region’s Vulnerable Persons Registry (Waterloo VPR, the Hamilton Police registry, or the Halton VPR). Revisit if the person moves regions or their communication needs or medications change materially — update within 30 days (Waterloo purges records after three years without an update).
2. Save the crisis numbers in every support worker’s phone and post them in the home: 9-8-8 (call or text); Here 24/7 (1-844-437-3247) for Waterloo; COAST for Hamilton and Halton; and 911 only for immediate danger to life.
3. Create and carry a disclosure/communication card stating the diagnosis, communication style, de-escalators, and an emergency contact — and rehearse the “ask before reaching for it” rule.

Before a crisis — build the plan: 4. Write a one-page crisis/safety plan (triggers, what helps, what escalates, medications, who to call) and share it with all staff; this is what you hand a responder. 5. Rehearse a police encounter with the person (hands visible, stay still, disclose, request a support person). Repeat periodically.

If the person becomes an accused or suspect: 6. Say nothing substantive and request counsel immediately — don’t let questioning proceed on the assumption that the person understands their rights. 7. Raise the developmental disability with duty counsel or defence at once, and ask specifically about mental-health diversion through the local CMHA court-support program. The threshold to pursue diversion is generally a minor or eligible offence with a nexus to the disability, plus Crown agreement. 8. Contact ARCH Disability Law Centre (416-482-8255 / 1-866-482-2724) for summary advice and referral.

If the person is a victim or witness: 9. Report, and tell police and the Crown early that the person needs testimonial accommodations (a support person, a screen, CCTV, or a video-recorded statement under s. 715.2). Because adults are less likely than children to be granted aids, request them in writing and well before the hearing. 10. Connect with regional Victim Services (attached to each police service) and, where credibility may be challenged, make sure defence and Crown are aware of Slatter and D.A.I. — reliability must be assessed individually, not discounted because of the disability.

Systemic and advocacy (for AIM as an organization): 11. Track which local officers are crisis-intervention-trained and which crisis teams are available overnight, and advocate for expanded mobile-crisis hours — the clearest service gap is after-hours coverage (IMPACT historically reached about 51% of live calls and does not run overnight).

Where families get stuck

• Criminal law is federal (the Criminal Code, testimonial aids, fitness and NCR), so those protections are uniform across Canada — but their use depends on local actors (police, Crowns, judges) recognizing the disability and applying for accommodations.
• Crisis response and diversion are delivered regionally and are unevenly resourced — mobile crisis teams have limited hours and staffing, and diversion thresholds differ by courthouse.
• Registries and cards are voluntary tools that only help if the person is enrolled and the responder engages them.
• The single most consequential lever a family or support worker controls is early disclosure plus advance preparation — registry, card, rehearsal, and knowing the crisis numbers.

Grey areas and points of confusion

• Thin Canadian data on victims with developmental disabilities specifically. Most robust victimization statistics use broad “disability” or “cognitive/mental-health disability” categories, not developmental disability alone. There’s no precise national statistic on prosecution or conviction rates for cases with victims who have an intellectual disability; the strongest Canadian statements (Benedet & Grant) are qualitative.
• No hard national figure on testimonial-aid uptake for adults. DOJ reviews describe adult applications as “rare” or “infrequent” and note that the vulnerable-adult witness population is often “not known.”
• False-confession statistics are largely U.S.-based (the National Registry of Exonerations). They’re directionally applicable to Ontario but not a perfect fit; Canadian-specific figures are sparse.
• Program availability is uneven and changes. Mobile-crisis hours, diversion access, and registry branding differ across Waterloo Region, Hamilton, and Halton, and are periodically re-funded or piloted (for example, Waterloo’s Crisis Call Diversion is a three-year pilot). Verify current details before relying on them.
• Fatal-encounter data is imperfect. Canada lacks a comprehensive official database; the widely cited figures come from journalism (CBC’s “Deadly Force”) and coroners’ inquests, and use “mental illness/distress” rather than developmental disability specifically.

How current is this, and what to double-check

• This is general information, not legal advice. For a specific situation, contact a lawyer or ARCH Disability Law Centre (a specialty disability-rights legal clinic in Ontario; summary advice and referral: 416-482-8255 / 1-866-482-2724), duty counsel, or Legal Aid Ontario.
• Recency: Program details and crisis numbers were verified against 2023–2026 sources; the 9-8-8 launch (November 30, 2023) and its January 16, 2026 refunding announcement, the Statistics Canada victimization data (2014/2018/2019 survey cycles), and the 2019/2024 sexual-assault reporting figures are all dated in-text. Some prevalence and interrogation studies are older and are flagged as such.
• Language: This guide uses person-first, community-appropriate terms and avoids retired terminology; some cited sources use older or clinical language (“mental handicap,” “mentally ill accused,” “emotionally disturbed person”) that reflects their era or legal context, not AIM’s preferred usage.
• Verify locally before acting: confirm the current name, eligibility, and contact route for each region’s registry and crisis service, as these change.

Related: Rights, Accessibility, and Anti-Discrimination Law for Adults with Developmental Disabilities in Ontario · Positive Behaviour Support in Ontario: A Plain-Language Guide for Families · Navigating Healthcare for an Adult with a Developmental Disability in Ontario