It’s the right thing to do:

• 6.4 million people in the United States have a visual disability.
• 10.5 million people in United States population have a hearing disability.
• 20.9 million people in United States population have a ambulatory disability.
• 14.8 million people in United States population have a cognitive disability.

That means that, on average, 13.2 million people in the United States have at least one disability that Section 508 is meant to help with

Erickson, W., Lee, C., & von Schrader, S. (2012). 2010 Disability Status Report: United
States. Ithaca, NY: Cornell University Employment and Disability Institute(EDI).

 It’s the law:

• Section 508 of the Rehabilitation Act (29 U.S.C. 794d), as amended by the Workforce Investment Act of 1998 (P.L. 105-220), August 7, 1998.