most important contributions and outcomes needed from a position,
required qualifications of candidates, and
reporting relationship and coworkers of a particular job.
Job descriptions are based on objective information obtained through job analysis, an understanding of the competencies and skills required to accomplish needed tasks, and the needs of the organization to produce work.
Job descriptions clearly identify and spell out the responsibilities of a specific job. Job descriptions also include information about working conditions, tools, equipment used, knowledge and skills needed, and relationships with other positions.
The best job descriptions are living, breathing documents that are updated as responsibilities change. The best job descriptions do not limit employees, but rather, cause them to stretch their experience, grow their skills, and develop their ability to contribute within their organization.