According to Torrington, a job description is usually developed by conducting a job analysis, which includes examining the tasks and sequences of tasks necessary to perform the job. The analysis considers the areas of knowledge and skills needed for the job. A job usually includes several roles. According to Hall, the job description might be broadened to form a person specification or may be known as "terms of reference". The person/job specification can be presented as a stand-alone document, but in practice it is usually included within the job description. A job description is often used by employers in the recruitment process.
Many job seekers consider job descriptions a valuable screening tool. Conveying job expectations and requirements in a written job description can attract qualified and interested candidates. Inappropriate language used in job descriptions reveals discriminatory or inappropriate phrases and offers a quick indicator that an individual may want to apply elsewhere. For example, an employer should avoid citing standards that may unnecessarily screen out particular groups such as individuals with disabilities. In contrast, a description written in a respectful tone with appropriate etiquette may encourage an individual to apply.