The importance of support in the workplace for persons with disabilities to adjust to working life has long been recognized in the literature. However, the effects of workplace support on the work adjustment of persons with disabilities have not been well documented. This paper examines whether workplace support is related to job satisfaction, performance (as evaluated by employers), organizational commitment, workplace integration, and their intention to quit their jobs. A survey of people with intellectual disabilities was conducted, and 169 answers were collected. The results of analysis of the survey are as follows: (a) workplace support consists of three factors: education, negative feedback, and supports for work performance, (b) moderate correlation was found between education and job satisfaction, (c) moderate correlation was found between organizational commitment and job satisfaction, and between workplace integration and job satisfaction; a moderate negative correlation was found between intention to quit job and job satisfaction, (d) only a weak negative correlation was found between intention to quit job and workplace support