A good template will provided a step_by_step approach with explanations as to why each step is proposed. The strength of the marketing plan derives from the integration of each step. So if you leave out a step, you may undermine your own plan. Some of the better marketing plan templates provide detailed instructions for newbies and do not presume that they know how to take each of the steps required in the template.
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.