This handout gives a summary of the federal and Texas laws against disability discrimination in the workplace. Mail Fill out and send the paper ADA Complaint Form.Work Free of Harassment. If you believe you have been discriminated against because of your disability, contact our office for a free case evaluation at 1-210-690-2200. This booklet explains the part of the ADA that prohibits job discrimination. These laws apply to Texas employers with at least 15 employees. If you believe that you or someone else experienced unlawful discrimination, you can report a disability rights violation. 1. Report using our online form. The ADA prohibits disability discrimination in the workplace and other contexts, and it became law in 1990. Disability Rights Texas helps people with disabilities understand and exercise their rights, ensuring full and equal participation in society.