Historically, unionized industries were early adopters of protections like the 40-hour workweek, workplace safety standards, and employer-sponsored healthcare, benefits advocates argue non-union workplaces adopted more slowly, if at all. Advocates argue that non-union workplaces have historically been slower to adopt protections that union contracts secured first, suggesting collective bargaining played a meaningful role in spreading these benefits more broadly. Advocates argue this historical pattern remains relevant to evaluating union impact today. This history, in their view, is strong evidence for unions' broader social contribution.