By: Lisa Silver
PDF Version: What Precisely Is A Regulatory Offence?
Case Commented On: R v Precision Diversified Oilfield Services Corp, 2018 ABCA 273
This semester, I will start teaching 1Ls the first principles of criminal law. The main components of a crime, consisting of the familiar terms of actus reus or prohibited act and mens rea or fault element, will be the focus. These concepts, that every lawyer becomes intimately familiar with in law school, are figments of the common law imagination as actus reus and mens rea do not figure in the Criminal Code. The terms are derived from the Latin maxim, “actus non facit reum nisi mens sit rea,” which translates as “there is no guilty act without a guilty mind.” This stands for the proposition that the actus reus or prohibited act must coincide or happen at the same time as the mens rea or fault element. That maxim, however, fails to shed light on what those terms mean in law. Indeed, what exactly is a prohibited act or actus reus depends on the crime as described in the Criminal Code, and what exactly is the fault element or mens rea depends on a combination of common law presumptions, statutory interpretation, and case law. In other words, it’s complicated. Even more complex is the vision of these terms when applied to the regulatory or quasi-criminal context. In the recent decision of R v Precision Diversified Oilfield Services Corp, 2018 ABCA 273 [Precision], the Alberta Court of Appeal attempts to provide clarity to these terms but in doing so may be creating more uncertainty.