Treasury Board has policies in place respecting advertising. Public Works and Government Services Canada also has formulated guidelines respecting the purchase of advertising and the awarding of advertising contracts and, up to a point, the manner in which these advertisements are broadcast.
Evidence of meeting #4 for Finance in the 40th Parliament, 2nd Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was advertising.
A recording is available from Parliament.