The ADA and Chapter 151B both prohibit employment discrimination against individuals with disabilities. Mail Fill out and send the paper ADA Complaint Form.If you believe you were discriminated against because of your disability, you can fill out an intake form or call our office. Learn how to prove disability discrimination and protect your rights with help from our Boston disability discrimination lawyers. To file your grievance, you may use the web-based ADA Complaint Form located at the bottom of this page. A charge of discrimination generally must be filed within 180 days of the alleged discrimination. The Americans With Disabilities Act ("ADA") serves as a landmark act in protecting those with disabilities in the workplace. What Laws Apply to Employment Discrimination Based on. Disability? • Americans with Disabilities Act (ADA) Title I – employers with 15 or more employees. Tenant's responsibility to demonstrate.