David Letterman has been heavily criticized by the National Organization for Women for creating a “toxic work” environment, according to CNN. The criticism comes in the wake of the recent scandal in which an alleged blackmail attempt on the chat show host prompted Letterman to admit that he had conducted affairs with members of his staff. In a statement issued on Tuesday, the women’s group called on CBS “to recognize that Letterman’s behavior creates a toxic environment and to take action immediately to rectify this situation. With just two women on CBS’ board of directors, we’re not holding our breath.”