Just to add to that, existing information management policies, rather than access to information policies, do capture a requirement for employees to document decisions and decision-making processes. Part of that is also to assist in terms of audit trails, and ensuring there's a solid record of how decisions are taken and when they are taken. There is currently a policy requirement that does apply to public servants, although you won't find that language in the access to information that you might have reviewed.
On May 5th, 2016. See this statement in context.