What is the test for economic regulation in Canada?

56. I do not doubt that economic regulation is an important government function in today's society but, if it is to be done at the expense of our fundamental freedoms, then it must, in my view, be done in response to a serious threat to the well‑being of the body politic or a substantial segment of it. The Chief Justice found this to be the case in PSAC v. Canada, 1987 CanLII 89 (SCC), [1987] 1 S.C.R. 424 (judgment released concurrently herewith), where the government's avowed objective was to fight inflation. Inflation is an economic problem that affects all the citizens of Canada and can, if uncontrolled, spark a national crisis or emergency: see Re Anti‑Inflation Act, 1976 CanLII 16 (SCC), [1976] 2 S.C.R. 373. The evidence adduced in this case, in my view, falls far short of establishing economic harm to the dairy workers and the public which is in that category.