From what I can tell of labour history, 1921 would actually be /after/ most of the increases in labour safety and labour standards. The gap between 1871 and 19

From what I can tell of labour history, 1921 would actually be /after/ most of the increases in labour safety and labour standards. The gap between 1871 and 1921 on that one is probably bigger than 1921 and 2021. The 48 or 40 hour week was long established by 1921 while 80 hr was standard in the early industrial revolution. American life expectancy also increased about 20 years or so in the years leading up to the 1920s.