This elegant decision tree goes beyond obvious cases like “when you're not sure” to give expansive guidance on when to use your Code.
In short, if your employee is doing something brand-new at the company, they should check the Code. If your employee is doing something routine and need to know if official procedures or training apply, they should check the Code then, too. This flowchart both answers the basic question as well as giving your employees context for how your Code fits into your broader structure of procedures, training, and manager oversight. Plus, it encourages the appropriate exercise of independent judgment by including a “gut check” at the end.