I see the issue of collateral benefits entitlement and deductibility in almost every mediation we handle these days. Clients come to the mediation table carrying a patchwork of benefits, including statutory accident benefits, employment insurance, disability pensions, long-term disability (LTD) income, Employment Insurance, public social assistance, CERB/CRB, perhaps even Ontario Disability Support Program (ODSP) or workplace-injury benefits under Workplace Safety and Insurance Act, 1997 (WSIA). The problem is that when those benefits intersect with a tort claim or an accident-benefits claim, what looks like a windfall often becomes a trap. Courts and insurers may deduct those payments, or even entitlements, from what the client ultimately recovers. That reality shapes, and often constrains, what clients will accept in negotiation.

In this post I walk through how the deductibility (or non-deductibility) of various collateral benefits plays out in Canadian practice, from public pensions to EI, ODSP, WSIB, LTD/STD, and more, with reference to leading authorities. I also reflect on the consequences for mediation strategy.

The Statutory Framework in Automobile-Related Tort Claims

In Ontario, for motor vehicle-related personal injury cases, the statutory framework for deducting collateral benefits from a tort award is primarily set out in the “collateral-benefits” provisions of Insurance Act (Ontario)^[1], in particular s. 267.8. That provision broadly abolished the traditional common-law “collateral source rule” in this context. Under s. 267.8, damages for income loss and loss of earning capacity, health-care and rehabilitation expenses, and other pecuniary losses must be reduced by payments received (or available) under certain plans, accident-benefits insurers, or other income continuation benefit plans.

Historically, courts used a “strict matching” or “apples-to-apples” approach when matching particular accident benefits (or other payments) to corresponding heads of tort damages. For example, income replacement benefits would offset lost income damages,

attendant care benefits would offset future care awards, and so on. But that changed with the unanimous 2018 decision of the Ontario Court of Appeal in Cadieux v. Cloutier, 2018 ONCA 903^[2]. See my Substack from last summer, “SABs, Silos, and the End of “Apples to Apples”: Lessons from Cadieux”^[3]. In that case, the Court rejected the strict matching doctrine and adopted the “silo” approach, grouping benefits and damages into the three broad silos of:

(1) income loss / loss of earning capacity,

(2) health care and rehabilitation / attendant care, and

(3) other pecuniary loss.

Under that approach, the total amount of collateral benefits received (or available) in a silo is credited against the total tort damages awarded in that silo, regardless of whether the benefit was strictly for past or future losses, or whether it was paid directly to the plaintiff or to a service provider^[4].

In addition, the Court of Appeal confirmed the deductions are made on a gross basis, that insurers are entitled to the full amount of benefits, not a net amount after legal fees. That said, the Court retained discretion to award the plaintiff some or all of the fees incurred in obtaining those benefits, as part of the costs of the tort action^[5].

Finally, s. 267.8(9) and (12) provide for future collateral benefits, after trial, to be held in trust or assigned to the tortfeasor (or liability insurer), at least to the extent of the damages awarded^[6].

Thus, in the context of automobile accidents in Ontario, the current law imposes a clear and unforgiving mechanism to prevent “double recovery,” and to capture for the tort defendant the full value of certain collateral benefits or entitlements.

Which Collateral Benefits Are Typically Deductible — and Which Are Not

Public Pensions and Disability Pensions (e.g. Canada Pension Plan Disability (CPP-D)) and Private LTD

Historically, the starting point is the common-law “private insurance exception,” crystallized by the Supreme Court of Canada in Cunningham v. Wheeler; Cooper v. Miller; Shanks v. McNee, [1994] 1 S.C.R. 359^[7]. There, the Court held that disability and similar benefits paid under a private or employment-related policy were generally not to be deducted from tort damages, absent clear statutory language to the contrary. The idea was simple. If you paid for insurance, the wrongdoer should not get the benefit of it.

In the Ontario motor-vehicle context, the Court of Appeal first applied that logic to CPP disability in Cugliari v. White, 1998 CanLII 5505 (ON CA)^[8]. The plaintiff had been injured in a motor vehicle accident and was receiving CPP disability benefits. The Court held that, under the then-applicable OMPP regime, CPP disability was a non-indemnity benefit and not deductible from tort income-loss damages, because the legislation had not clearly displaced the common-law rule.

The issue resurfaced under the Bill 59 version of s. 267.8 in Demers v. B.R. Davidson Mining & Development Ltd. 2012 ONCA 384 (ON CA)^[9]. The plaintiff there, injured in a 1999 motor vehicle accident, received both CPP disability and Hospitals of Ontario Pension Plan disability benefits. On an agreed statement of facts, the motion judge held that neither benefit was deductible from tort damages for loss of income or earning capacity, and the Court of Appeal agreed. The Court emphasized that these disability pensions were paid because of long-term disability, not “in respect of the incident,” and held that, without clear and unambiguous statutory language, the common-law protection for non-indemnity benefits remained intact.

After Demers, the Legislature amended the Ontario Regulation 461/96 (“Court Proceedings for Automobile Accidents that Occur on or After November 1, 1996”)^[10] so that, for accidents on or after September 1, 2010, CPP disability benefits are expressly deemed to be payments under an “income continuation benefit plan” for the purposes of s. 267.8. In other words, the current text now clearly aims to make CPP-D and comparable disability pensions deductible from tort income-loss awards in post-2010 motor-vehicle cases. What we do not yet have is a Court of Appeal decision squarely interpreting those amendments in light of Cugliari and Demers, so the appellate guidance on CPP-D under the current regime remains incomplete.

Since the 2010 amendments deeming CPP-D and comparable disability benefits to fall within the definition of an “income continuation benefit plan,” counsel in practice, and particularly in mediation, generally proceed on the working assumption that CPP-D and employer-based LTD payments are deductible under s. 267.8 in post-2010 motor-vehicle cases. However, because the Court of Appeal has not yet squarely ruled on the amended scheme, this reflects practical application rather than binding appellate authority.

The result is a layered picture. At common law and under earlier statutory schemes, appellate authority such as Cunningham, Cugliari, and Demers treated disability pensions and many private plans as non-deductible unless the Legislature clearly displaced that rule. Under the modern, post-2010 Ontario motor-vehicle regime, the Legislature has now expressly brought CPP-D and employment-based disability plans within the scope of s. 267.8 by deeming them to be “income continuation benefit plans.” However, the Court of Appeal has not yet revisited the issue under the amended text. In day-to-day litigation and mediation practice, most counsel proceed on the working assumption that CPP-D and LTD will be deducted from tort income-loss awards in post-2010 cases, but that position reflects practical application of the legislative amendments rather than settled appellate authority.

Short-Term Disability (STD), Sick Leave, Employment-Based Benefits

Short-term disability (STD) payments or continued employer salary (e.g., under a sick-leave plan) also fall within the ambit of s. 267.8(1). Because the Insurance Act does not preserve the traditional common-law “private insurance exception” in the motor-vehicle context, these benefits are equally subject to deduction from income loss or loss of earning capacity damages. This reflects the principle that any payment “in respect of the incident … under an income continuation benefit plan” must be credited against the plaintiff’s claim^[11].

Accordingly, plaintiffs who receive STD or similar employer-based benefits should not count on those payments as a net “top-up” in addition to tort damages. Rather, they diminish the compensatory value of any award for earnings loss.

Statutory Accident Benefits (IRBs, NEBs, Medical & Rehabilitation Benefits)

The statutory accident benefits under the no-fault regime, including income replacement benefits (IRBs), non-earner benefits (NEBs), medical/rehabilitation benefits, attendant-care, and related benefits, have long been treated as collateral benefits subject to deduction in tort if the plaintiff proceeds to a tort action. With the unanimous decision of the Ontario Court of Appeal in Cadieux^[12], the courts abandoned the “strict matching” (apples-to-apples) approach in favour of what is now known as the “silo” method. Under this approach, all collateral benefits and damages are grouped into broad categories of income loss/loss of earning capacity, health care/rehabilitation, and other pecuniary losses , and the total value of benefits in a silo is credited against the total damages awarded in that silo^[13].

For example, in a case where accident benefits were settled pretrial, including large payments for medical/rehabilitation or attendant care, those sums can significantly reduce future care or care-related awards in tort. In Cadieux, the Court of Appeal recognized this in the context of a settlement. What had been designated as “medical/rehabilitation” or “attendant care” in the settlement pool became part of a larger “health care / rehabilitation” silo, entitling the tort defendant to credit against a broad array of care-related damages.

This shift fundamentally changed how both plaintiffs and defendants must approach pre-trial accident-benefits settlements and frame tort claims. Gross pleading and comprehensive disclosure are now necessary to avoid overlooked deductions.

Social Assistance (ODSP and OW))

When it comes to social assistance programs such as Ontario Disability Support Program (ODSP), Ontario Works (OW)), the law is considerably murkier and less consistent. While these programs provide income or support, they were not originally designed as indemnity benefits for personal injury, but rather as social welfare assistance. As a result, courts often treat them differently than indemnity-type income replacement or insurance benefits.

Notably, in Grajqevic v. Rustaie, 2017 ONSC 2535^[14], the court declined to treat OW and ODSP payments as deductible collateral benefits under s. 267.8. The rationale was that the benefits were not “in respect of the incident” — the motor vehicle accident — but were instead tied to an underlying disease or condition unrelated to the accident^[15].

Thus, where social assistance was obtained for reasons wholly independent of the collision (or injury), courts may refuse deduction. However, this remains highly fact-sensitive. In circumstances where an injured plaintiff can show that receipt of social assistance is directly linked to loss of income from the accident, in my view a court may be persuaded to treat those payments as collateral benefits. The risk and uncertainty counsel must navigate are substantial. The designation of a benefit as “social assistance” does not guarantee non-deductibility, but it may improve the plaintiff’s odds, especially for general damages or non-pecuniary awards tied to pain and suffering.

Employment Insurance (EI)

Although EI often appears on benefit charts in litigation and mediation, as far as I can discern, the current law provides no authoritative basis to treat EI as a deductible collateral benefit under s. 267.8 in motor-vehicle tort claims. EI is not included in the definition of an “income continuation benefit plan,” nor is it referenced in the post-2010 amendments that expressly deem CPP-D and comparable disability pensions to be deductible. I have not located any Ontario appellate or trial decision that applies s. 267.8 to EI in this context. In the absence of statutory language or reported authority compelling deduction, EI remains in a grey zone. Plaintiffs should be aware that its treatment is unsettled, but on the current state of publicly-reported case-law, EI cannot be confidently categorized as a deductible benefit under s. 267.8. If anything, its character as a general labour-force social insurance program aligns it more closely with ODSP or OW than with indemnity-style disability benefits. Counsel should frame EI factually and carefully, but avoid assuming that it will reduce tort recovery unless the law moves further.

Workplace Injury Benefits under Workplace Safety and Insurance Act, 1997 / Workplace Safety and Insurance Board (WSIB)

I believe the relationship between tort recovery, private disability or insurance benefits, and statutory workers’-compensation under WSIA / WSIB remains one of the more unsettled and under-litigated terrain in Ontario personal-injury law. The statutory deduction regime under s. 267.8 of the Insurance Act governs only motor-vehicle-related torts and applies to “payments … in respect of the incident … under the laws of any jurisdiction or under an income continuation benefit plan.” Because WSIB benefits arise under a distinct statutory structure, they are not automatically subsumed within the s. 267.8 deduction regime. From my research, this structural separation is widely recognized in practitioners’ overviews of collateral-benefits law.

As a result, there is no authoritative, reported decision that I can locate from a superior or appellate court that establishes a general rule requiring deduction of WSIB benefits from tort awards. Despite the frequency of WSIB-tort overlap in theory, the publicly reported jurisprudence remains silent.

With respect to overlaps between WSIB and private long-term disability (LTD) or other insurance benefits, the law is even more fragmented. Some insurers in practice have attempted to offset potential WSIB benefits against an insured’s LTD entitlement, but I found no reported Ontario decision that definitively supports a doctrine of such offsets in the absence of clear contractual language mandating them. Because of that absence, and the lack of appellate guidance, whether WSIB eligibility or benefits reduce tort or insurance recoveries remains a matter of contractual detail, factual circumstance and legal risk assessment, rather than settled law.

For mediators and counsel, the upshot is this. Where WSIB is potentially involved, one must proceed with caution. Rather than assuming deductibility, parties should carefully review statutory entitlements and insurance contracts, and prepare for unpredictability.

CERB / CRB — Pandemic-Era Benefits Meet Tort Recovery

One of the most important recent developments in collateral-benefits jurisprudence is the decision in Ferreira v. Hopper, 2024 ONSC 5385^[16], the first Ontario case to consider whether pandemic-income relief benefits under the Canada Emergency Response Benefit (CERB) and Canada Recovery Benefit (CRB) are deductible from a tort award for past income loss. In Ferreira, the plaintiff had sustained soft-tissue injuries in a 2017 motor-vehicle collision and was awarded $100,000 by a jury for past loss of income. Over the relevant period, he had received roughly $19,600 in CERB/CRB benefits. The motion judge, confronting the deductibility issue, concluded that because the plaintiff’s evidence showed that he was off work due to the accident, not COVID-19. the CERB/CRB payments were “in respect of the incident” and therefore properly deductible under s. 267.8(1)^[17].

The court thus confirmed that pandemic-income supports may operate like traditional collateral benefits where the income loss is attributable to the accident, not to COVID. This imposes a new risk on plaintiffs: public programs historically viewed as “free money” may now erode tort awards quite drastically if they overlap.

The decision in Ferreira will likely guide many future tort claims arising from accidents during the pandemic years. Its reasoning also demonstrates that courts will apply s. 267.8 strictly: the source or label of the benefit — even a temporary emergency benefit — matters far less than its functional role as income replacement.

Where the Law Leaves Gaps — Public Benefits Not Yet Fully Controlled

Even with the expansion of the statutory deduction regime, from my seat the law remains unsettled in a number of areas, particularly outside the classic motor-vehicle / no-fault context. For non-vehicular torts such as slip-and-falls, occupiers’ liability, municipal liability, workplace negligence (outside WSIB), or other liability claims, there is no uniform statutory collateral-benefits regime akin to s. 267.8. In those cases, the traditional common-law “collateral-source rule” (or variations of it) may survive, unless the legislature enacts a similar deduction mechanism, or the parties negotiate contractual or statutory offsets beforehand. Legal commentators^[18] have noted that the absence of a statutory framework in those contexts leaves “grey zones” where deductions may or may not be available^[19].

Moreover, even within the motor-vehicle realm, the treatment of social-assistance benefits, public pensions (non-CPP), or other “non-indemnity” payments continues to pose difficult questions. Because such payments may have been designed as welfare or support, not compensation, courts are more reluctant to treat them as collateral benefits particularly where they are repayable upon receipt of a tort award, or where policy or statutory objectives (public interest, redistribution) counsel against penalizing the plaintiff for having sought support. The case law, including Grajqevic, reflects that reluctance^[20].

Given these uncertainties, predicting net recovery remains perilous, a fact I see that resonates strongly in mediation, where risk tolerance and transparency are critical.

Practical Challenges in Real-World Cases

The evolution and expansion of collateral-benefits deduction law, especially with newer cases like Ferreira, creates a very challenging practical landscape for mediators and plaintiff counsel.

First, there is the need for an exhaustive benefits “audit.” Given that virtually any income replacement benefit, from statutory, private, public assistance or pandemic relief, may now be deductible, counsel must identify everything the plaintiff has applied for or could apply for (CPP-D, LTD, STD, EI, CERB/CRB, OW/ODSP, WSIB, employer benefits, etc.), whether received or merely available. Missing one potential collateral stream can lead to unpleasant surprises at trial or during settlement.

Second, timing and sequencing take on new significance. Settlement of statutory accident benefits before a tort trial, a common practice, may lock in substantial offsets under the “silo” regime, especially where medical/rehab or attendant-care benefits are large. Similarly, accepting public or pandemic-related income replacement benefits may result in deduction from future tort awards under cases like Ferreira.

Under the deduction regime affirmed in Cadieux, collateral benefits (e.g. statutory accident benefits, income-continuation benefits) are deducted on a gross basis, not net of legal fees or taxes. That means plaintiffs receiving taxable disability payments (like CPP-D or LTD) may, in practical effect, end up less well-off than plaintiffs who declined those benefits.

Fourth, in mixed-benefit scenarios, for example, a plaintiff with both WSIB entitlement and private LTD, or social assistance and accident benefits, the overlap may produce complex disputes over which benefits are deductible or subject to set-offs, assignment, or trust. The lack of uniform case law in many of these hybrid contexts adds to the unpredictability.

As a mediator in this area, all of this means that mediation must be approached not as a single numerical settlement negotiation, but as a strategic assessment of net value. What the plaintiff will actually walk away with, after all deductions, offsets, assignments, and potential taxes.

Implications for Mediation

Given the expanded and increasingly complex state of collateral-benefits law, mediation strategy requires more sophistication and foresight than ever. For mediators and counsel working in the personal injury space, a few imperatives emerge.

First, every mediation should start with a comprehensive benefit-mapping exercise. Counsel should ask early: what are all the possible collateral benefits the plaintiff has received or may be eligible for? That includes traditional accident-benefits, but also CPP-D, LTD, EI, pandemic-income benefits (CERB/CRB), social assistance, employer-based disability or sick-leave benefits, WSIB or other statutory injury benefits, and even potential future entitlements.

Second, when settling either accident benefits or tort claims, parties should structure settlements with an eye to minimizing deduction impact. That may involve allocating payments among different silos (income loss vs medical/rehabilitation vs care), deferring part of the payment, or negotiating for “net-of-deduction” language where feasible. Mediation offers a chance to be creative in structuring settlements in a way that preserves maximum net benefit for the plaintiff.

Third, mediators should ensure plaintiffs receive clear, realistic estimates of net recovery (after deductibility, assignment/trust of future benefits, and taxes) not just gross numbers. Unrealistic expectations around gross damages often doom negotiations. Providing a grounded, conservative estimate of take-home value can improve the chance of settlement and avoid post-settlement disappointment.

Fourth, in cases involving overlapping insurance, statutory, and social-benefit regimes (e.g. LTD and potential WSIB; public assistance and accident benefits), a good mediator should encourage early disclosure and full investigation. Where contract language is ambiguous (e.g., in LTD policies), or where statutory interplay is uncertain, the parties may have room to negotiate creative solutions, perhaps preserving some benefit for the plaintiff without giving the defendant a full credit.

Finally, in mediation, the parties must appreciate that recent developments, especially the decision in Ferreira, have expanded the range of deductible collateral benefits. What once might have been treated as “free” or “non-deductible” (e.g., pandemic-related benefit) can no longer be assumed safe. Mediators and counsel alike must stay current with evolving jurisprudence and regulatory context.

Conclusion

Collateral benefit deductibility is no longer a niche technicality. It is central to the real value of any tort or accident benefits recovery in modern personal-injury litigation. With statutory codification under s. 267.8 of the Insurance Act, reinforced by appellate authority like Cadieux, and increasingly broad interpretation by courts such as in Ferreira, the universe of deductible benefits now includes public pensions, private insurance, employer-based disability or sick-leave benefits, and even pandemic-era income supports.

For mediators and plaintiff counsel, the landscape demands vigilance. Benefit audits, meticulous pleadings, strategic settlement design, and, above all, realistic, not optimistic, assessments of net recovery. The “hidden math” of collateral-benefits deduction can erode even substantial awards, but known and managed properly, it also offers an opportunity to structure resolutions that are transparent, equitable, and truly compensatory.

In the end, a successful mediation is not a victory measured by gross numbers, but by what the client actually takes home.