ProPublica recently released the results of a sweeping investigation highlighting the alleged abuses of age discrimination conducted within the technology industry. It was reported that IBM fired about 20,000 American employees over the age of 40, which amounts to about 60% of its total U.S. job cuts during the time period in question. The investigation included doleful stories gathered from over 1,100 former IBM employees. On Monday, Shannon Liss-Riordan filed a class-action lawsuit in federal court in Manhattan on behalf of three former IBM employees who say the tech company discriminated against them based on their age when it fired them.