DDA Compliance. The Disability Discrimination Act (DDA) 1995 aims to end the discrimination that many disabled people face. This Act gives disabled people rights in the areas of: employment.education. access to goods, facilities and services.nder the DDA, it is unlawful for a service provider to treat you less favourably than it would treat a hearing customer or a customer with a different disability. The DDA says there are four types of unlawful discrimination: Refusing or deliberately failing to serve you because of your deafness or hearing loss.