This blog is originally from Jerica Lee and here are my comments on this issue.

Job satisfaction is an individual’s general attitude towards his or her job. People who have high level of job satisfaction hold positive attitudes toward the job and vice versa. I think among the major job-satisfaction factors, enjoying the work is almost the one which is most strongly linked to high levels of general job satisfaction.  Jobs that provide training, variety, independence, and control satisfy most employees. The correlation between job satisfaction and job performance is moderately strong. If you do a good job, you intrinsically feel good about it. In addition, your higher productivity should increase your recognition; increase your pay level, and your likelihood of promotion. Cumulatively, these rewards, in turn increase your level of satisfaction with the job.