The MCAD offers various avenues to file a complaint of discrimination. Please review the options below to determine what is best for you.If you are considering filing a discrimination case, first review the information on the website of the Massachusetts Commission Against Discrimination (MCAD). In Massachusetts, you have a 300-day window to file a lawsuit for harassment or discrimination. How do I file a complaint of discrimination under Massachusetts law? You may file a complaint with the Human Rights Commission. If they decides that discrimination did not occur then they will send you a "Notice of Right to Sue. Fill out the form and send it to us. The specialist will contact you for any additional information needed to complete this review. You must file a discrimination charge with the MCAD or the EEOC if you wish to file an employment discrimination lawsuit in court.