It is important to note that this right only protects the right of individuals to form associations and not associations themselves. Consequently, government legislation affecting the powers of established labour associations do not necessarily invoke section 2(d). It is only where legislation restricts the associative nature of an activity will section 2 be invoked. However, in the landmark "Health Services and Support – Facilities Subsector Bargaining Association v British Columbia", the Supreme Court ruled that freedom of association guaranteed by section 2(d) includes a procedural right to collective bargaining. The Court ruled in this case that legislation that "substantially interferes" with the process of collective bargaining is a section 2(d) infringement. The test for "substantial interference" is twofold: (1) the importance of the matter affected to the process of collective bargaining, and more specifically, the capacity of union members to come together and pursue collective goals in concert; and (2) the manner in which the measure impacts on the collective right to good faith negotiation and consultation. It is not certain whether the decision in "Health Services" overturns jurisprudence arising from the so-called "labour trilogy" cases of 1987 which found that section 2(d) did not include a right to collective bargaining.