According to Hackman and Oldham, what aspect does NOT characterize differing jobs?

The aspect that does not characterize differing jobs according to Hackman and Oldham's Job Characteristics Model is job stability. The model focuses on the design of jobs and suggests that five core job dimensions influence motivation and satisfaction: skill variety, task identity, task significance, autonomy, and feedback.

Skill variety refers to the range of different activities performed in a job, allowing the individual to use various skills and talents. Task feedback involves the information returned to the employee about the effectiveness of their performance, helping them understand how well they are doing. Autonomy is the degree of control an employee has over how they perform their work.

Job stability, however, does not relate to the essential characteristics of job design as outlined by Hackman and Oldham. While job stability may be relevant in discussions about job security or organizational structure, it does not directly impact the intrinsic characteristics that define and differentiate jobs in terms of their motivational influence. Thus, job stability is not an essential component of job characteristics as presented in their model.