An Amazon worker delivers packages Reuters Amazon has been accused by the National Labor Relations Board of illegally firing a working who pushed for better working conditions, BuzzFeed News reported Friday. Amazon fired Courtney Bowden in March after she advocated for sick pay for part-time workers. Multiple legal challenges have been brought against Amazon over its firings of whistleblowers who have spoken out about working conditions at the company during the pandemic. Amazon, meanwhile, has become increasingly aggressive in its attempts to monitor workers as well as silence and discredit those who raise concerns. Visit Business Insider's homepage for more stories. The National Labor Relations Board has accused Amazon of illegally firing a worker who advocated for better working conditions during the pandemic, BuzzFeed News reported Friday.The NLRB filed a complaint against Amazon last month for firing former warehouse worker Courtney Bowden, meaning her case will be heard by a federal judge in March, according to BuzzFeed News.Amazon fired Bowden in March after she tried to organize her coworkers to push for paid time off for part-time workers, claiming she had gotten into an altercation with a coworker, The Wall Street Journal reported in April.Bowden disputed Amazon's claims, telling The Wall Street Journal at the time that the company was "trying to get rid of organizers," adding: "We are being targeted."Amazon did not respond to a request for comment on this story.Bowden is one of at least six workers that Amazon fired in the early days of the pandemic following frequent protests around the world over what workers said were unsafe working conditions.