There are many talented PWD, educated in STEM fields, who can work, but not for eight hours at a time. Very often work is physically demanding because of attendant illnesses. If a work schedule could be adjusted, that alone would provide an environment by which a PWD could be employed.
For example, my student says that sometimes, while working, he will encounter spasms, and has to stop work. If schedules could be accommodated, then that alone would enable PWD employment.