“The presumption of capacity is only rebuttable under precise conditions and with clear evidence: Ohenhen (Re), 2018 ONCA 65, 140 O.R. (3d) 616, at para. 82; Royal Bank, at para. 18. Those requirements are necessary to protect the autonomy of the person whose capacity is in issue. As Major J. acknowledged in Starson v. Swayze, 2003 SCC 32 (CanLII), [2003] 1 S.C.R. 722, at para. 75, “Unwarranted findings of incapacity severely infringe upon a person’s right to self-determination.”
Further, the question of capacity is nuanced. There are varying levels of capacity – a person can be capable of making a basic decision and not capable of making a complex decision or capable of making decisions about personal matters such as where or with whom to live and not decisions regarding financial matters: Calvert (Litigation Guardian of) v. Calvert (1997), 1997 CanLII 12096 (ON SC), 32 O.R. (3d) 281 (Gen. Div.), at pp. 293-94, aff’d 1998 CanLII 3001 (ON CA), [1998] 37 O.R. (3d) 221 (C.A.), leave to appeal refused, [1998] S.C.C.A. 161; Ohenhen (Re), at paras. 79-80; and Carmichael v. GlaxoSmithKline Inc., 2020 ONCA 447, 151 O.R. (3d) 609, at para. 86, leave to appeal refused [2020] S.C.C.A. No. 409. In other words, the fact that a person is incapable of making decisions regarding property does not mean that they are incapable of making decisions regarding personal care. Further, a person may be capable of making decisions regarding some aspects of property and personal care, for example, one’s residence, but not others. In sum, capacity is on a spectrum and is not “an all-or-nothing proposition”: Ohenhen (Re), at para. 79.
The onus on the party alleging incapacity and the high burden of proof required to displace the presumption of capacity serve to safeguard the important right of self-determination. So too does the low threshold set by the courts for the determination of capacity. As Benotto J. (as she then was) stated in Calvert, a case under the Act involving the capacity of a spouse living with Alzheimer’s disease to separate and divorce, at p. 294: “The courts are slow to take away a person’s right to decide. This is reflected in the low threshold the courts have set for the determination of capacity.” This is because “[a] person’s right of self-determination is an important philosophical and legal principle”: Calvert, at p. 293. Jamal J.A. (as he then was), relying on Calvert and Ohenhen (Re), further explained in Carmichael, at para. 85: “Capacity is linked to personal autonomy and a person’s self-determination and ability to make important life choices.
Against the backdrop of the right to be heard and legal presumption of capacity, I turn to interpret ss. 2(1)(b) and 16(1) of the Act. Legislation that imposes limitations on an adult person’s decision-making rights must be interpreted in a way that minimizes intrusiveness: Nova Scotia (Minister of Health) v. J.J., 2005 SCC 12, [2005] 1 S.C.R. 177, at para. 23. The determination that an adult person is a “child of a marriage” may diminish that person’s right to function autonomously, including, as here, deciding where, when, and with whom they will live.
Issues of capacity for dependent adults living with disabilities are commonly but not exclusively decided in proceedings brought for guardianship orders under the SDA. However, given the equally serious consequences to an adult’s autonomy that may flow from orders made under the Act, there is no reason to treat issues of capacity that arise under the Act any differently than they are treated in other proceedings. In consequence, s. 2(1)(b) of the Act must be interpreted and applied in the context of the common law presumption of capacity and the high burden of proof required to displace it.”
