JCM determines five core job dimensions, i.e. skill variety, task identity, task significance, autonomy and feedback, which impact on the affective experiences of employees during work. Skill variety is ‘a degree to which a job requires variety of skills and talents of the employee’; task identity refers to ‘the job requiring completion of identifiable piece of work’; task significance indicates ‘the impact of job on lives and work of other people’; autonomy is ‘the freedom given to the worker in determining the way of task accomplishment’; feedback refers to ‘the information given to worker pertaining to his performance as a result of carrying out his tasks’.