The second is that an arbitrator may deal with matters that arise inferentially from a collective agreement. In Weber v. Ontario Hydro, 1995 CanLII 108 (SCC),  2 S.C.R. 929 at 957, Madam Justice McLachlin (as she then was) said: "only disputes which expressly or inferentially arise out of the collective agreement are foreclosed to the Courts" [supporting citations deleted]. In other words, if the subject matter of a grievance arises inferentially from the wording of the collective agreement, it is arbitrable.
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