A proposed class action lawsuit alleging Facebook’s ad placement tools facilitate discrimination against older job seekers has been expanded to identify additional companies, widening claims that candidates are being filtered out by gender, geography, race and age, Insurance Journal reports. The Communications Workers of America is suing on behalf of union members and other job seekers who allegedly missed out on employment opportunities because companies used Facebook’s ad tools to target people of other ages. The original filing-named defendants are Amazon.com Inc., Cox Media Group, Cox Communications Inc. and T-Mobile, as well as what the communications union estimates to be hundreds of employers and employment agencies that used Facebook’s tools to filter out older job hunters when seeking to fill positions. The amended complaint — filed Tuesday in San Francisco federal court — adds Ikea, Enterprise Rent-A-Car, and the University of Maryland Medical System to its list of companies that allegedly used Facebook’s tools to filter by age.