The fundamental premise underlying every approved restraint technique is that it has been assessed, validated, and authorized because it represents a proportionate response to a specific risk while minimizing harm to the greatest extent possible. This premise, however, does not create immunity from legal consequences when individuals suffer injuries during the application of these techniques. The reality confronting professionals across Canadian controlled care environments is that even perfect adherence to approved methods can result in significant physical harm, and when it does, a complex web of legal obligations, investigative processes, and potential liabilities is immediately activated. Understanding this framework is not merely an academic exercise but an essential component of professional practice that protects workers, organizations, and the individuals in their care.
Canadian law has always recognized that certain professions require the application of force in circumstances that would otherwise constitute assault. The Criminal Code of Canada establishes foundational principles regarding the use of force, including provisions that authorize persons in positions of authority to use force that is reasonable in the circumstances for the purpose of preventing an individual from harming themselves or others, or for maintaining discipline and security in institutional settings. This authorization, however, is strictly bounded by the requirement of reasonableness, which courts assess through both objective and subjective lenses. The objective standard asks whether a reasonable person in the same circumstances would have concluded that the force used was necessary and proportionate. The subjective standard examines whether the individual who applied force genuinely believed it was necessary, even if that belief was mistaken. Both standards must be satisfied for the use of force to be legally justified, and importantly, both are evaluated retrospectively with the benefit of hindsight that the worker did not possess in the moment.