The union argues the Alberta Court of Appeal based its decision on hypotheticals, even though AUPE was experiencing a "current chilling effect" from the bill's prohibitions.

The Alberta Union of Provincial Employees has launched a constitutional challenge against the UCP government's controversial Bill 1.

A new legislature sitting has begun with the Alberta government promising to invest directly in oil and gas, if necessary, and to pass a law that would punish people who block roads and rail lines.