Using a representative sample of Spanish individuals, we explore the effects of workers' education on self-assessed satisfaction with diverse specific aspects of their jobs. We find that the effects of education level on job satisfaction differ, both in size and direction, according to the aspect of the job considered, especially after controlling for actual job attributes and other workers' characteristics. We also find that workers' perceptions of the match between education and employment are relevant as determinants of job satisfaction irrespective of workers' education level.