The U.S. federal government is a significant employer of people with disabilities — and strives to do better. They also work to foster employment in the private sector.
Much of this work happens at ODEP, part of the U.S. Department of Labor. ODEP's mission is to develop and influence policies and practices that increase the number and quality of employment opportunities for people with disabilities.
...part of which is a very information-rich web site.
View their video about the founding of ODEP.