believed job satisfaction is a positive or negative attitude that an employee has toward his or her job or some specific aspects of the job, and is an internal state of mind of an individual. [18] pointed out it is a feeling or affection held by a member of an occupation system; if the feeling is positive or the response is active, then the member is satisfied, and vice versa. [19] proposed that job satisfaction is an employee's feeling about his or her work environment, which includes the job itself, supervisor, work group, organization, and life. [20, 21] suggested that the level of job satisfaction depends on the difference between what a person actually gains from his or her job and what he or she expects. [22] proposed that job satisfaction is the level in which an employee likes or dislikes his or her job. [23] also pointed out that job satisfaction is an employee's feeling about his or her job and is a general attitude derived from an evaluation of all aspects in a job.