As stated on the EEOC Website:
The law requires an employer to post a notice describing the Federal laws prohibiting job discrimination based on race, color, sex, national origin, religion, age, equal pay, disability or genetic information.
The “EEO is the Law” poster and the Supplement have been replaced with the “Know Your Rights” poster, prepared by the Equal Employment Opportunity Commission (EEOC), summarizes these laws and explains how an employee or applicant can file a complaint if s/he believes that s/he has been the victim of discrimination. EEOC’s poster is available in English, Arabic, Chinese and Spanish.
This poster should be placed in a conspicuous location in the workplace where notices to applicants and employees are customarily posted. In addition to posting the enclosed poster, employers are encouraged to post the electronic notice on their internal web sites in a conspicuous location. In most cases, electronic posting supplements physical posting but does not itself fulfill the employer’s basic obligation to physically post the required information in its workplaces. In some situations (e.g., for employees who telework and do not visit the employer’s workplace on a regular basis), it may be required in addition to physical posting.
The Americans with Disabilities Act (ADA) requires that notices of Federal laws prohibiting job discrimination be made available in a location that is accessible to applicants and employees with disabilities that limit mobility.
Printed notices should also be made available in an accessible format, as needed, to persons with disabilities that limit the ability to see or read. Notices can be recorded on an audio file, provided in an electronic format that can be utilized by screen-reading technology or read to applicants or employees with disabilities that limit seeing or reading ability. A screen-readable electronic format is available below.