Depending on what you consider decisive you can use 1949, 1958, or 1973 as the decisive turning point. The double recession of 1958-1960 was certainly decisive

Depending on what you consider decisive you can use 1949, 1958, or 1973 as the decisive turning point. The double recession of 1958-1960 was certainly decisive if we're looking at labor's political power. It was after that, for the first time in 70 years, that the USA began to develop a trade deficit. Please look at first chart on this page: https://www.mckinsey.com/featured-insights/employment-and-growth/a-new-look-at-the-declining-labor-share-of-income-in-the-united-states# https://www.mckinsey.com/featured-insights/employment-and-gr... You can see that labor begins to weaken after 1960.