It should include the name of the project, the people involved and those who will be held accountable for whatever may occur. It should also have an introduction to the plan, the scope of the plan, policies to be followed, the officers involved, the need_to_know for workers in the site of work, details of accident or illness, inspection dates, an appendix for the documents that will be attached and whatever else is deemed necessary.
If you need to present a marketing plan to your boss then it is very important that the format used for the plan is appealing. Using an attractive format with proper charts, graphs etc. can really make a difference but at the same time designing the marketing plan can be a chore. So if you have to present your plan to your bosses but do not have the time then you can simply buy a template.