Job descriptions are written statements that describe the duties, responsibilities, required qualifications, and reporting relationships 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.