IMPORTANT: This post is specific to Canada. If you are not a Canada business/taxpayer then it is probably not applicable to you.
If you are operating as an incorporated body then you need to keep written records of certain decisions and actions. This is all governed by the Act that you are incorporated under such as the Canada Business Corporations Act or the Ontario Business Corporations Act (each Province or Territory has a local act).
Each corporation is required to have a Board of Directors (often it is a sole Director) and the decisions of the Director(s) and Shareholder(s) must be properly recorded by way of Minute (a written record of decision in a meeting) or Resolution (a written record of a unanimous decision made when a meeting is not held, signed by all the parties eligible to vote at a meeting had it been held).