In Uber v Heller, Uber attempts to require one of its drivers, Mr. Heller, to use arbitration instead of the courts, if he wishes to sue Uber. The significance is this: if Uber succeeds in requiring Mr. Heller to use arbitration, then Mr. Heller may not commence his class action. This case picks up on where Telus left off.
Intervention (Amicus) in Uber v Heller https://youtu.be/COwSswdpUFw
In Telus v Wellman, Mr. Wellman (as a business entity) attempts to bypass the agreement to arbitrate, contained in a contract he agreed to, by attempting to join a consumer class action. The consequence of allowing Mr. Wellman to join a consumer class would blur the lines between business and consumers.
Intervention (Amicus) in Telus v Wellman https://youtu.be/RHZr-0BK2gI