Customizable job description forms for jobs in a variety of industries are available on TemplateZone.com and Workable.com. An additional template that works with many different jobs is available on MIT.edu.
Job descriptions generally start with a short summary that describes the main duties of the job, the department it is a part of, and the job titles of the people they answer to. The job description goes on to list the main duties expected of the employee. The third section of the job description includes hiring requirements and essential traits that the employee should display to succeed in the position.