The purposes of this chapter are (1) to rehabilitate individuals with disabilities who have a barrier to employment so that they may prepare for and engage in a gainful occupation; (2) to provide persons with physical, mental, or sensory disabilities with a program of services which will result in greater opportunities for them to enter more fully into life in the community; (3) to promote activities which will assist individuals with disabilities to become self-sufficient and self-supporting; and (4) to encourage and develop community rehabilitation programs, job support services, and other resources needed by individuals with disabilities.