What is the test for a variation of spousal support for a 62 year old woman?

Also relied on by the applicant is Bullock v. Bullock, 2004 CarswellOnt 919 (Ont. S.C.J.). The trial judge found that voluntary early retirement was not a “material change in circumstances” justifying a variation of spousal support. The trial judge stated, in part, at para. 13: 13 … In my view, voluntary retirement at age 62 is not a basis for finding a material change in circumstances. A support payor cannot choose to be voluntarily underemployed, whether by retirement or otherwise, and thereby avoid his or her spousal support payment obligations … [citations omitted]