Jeff Stein at the Washington Post has a piece about the 4-day week and the lack of interest in it among American progressives and unions:
In Europe, signs abound of interest in continuing to cut working hours. The four-day week has won backing from some of the biggest unions in Ireland and Britain, while plans to dramatically cut working hours have been embraced by large unions in Germany, the Netherlands and France….
But so far, the idea has failed to gain significant attention from the American left or labor movement. Jon Steinman, who worked at the Office of Congressional Ethics, said he is starting an advocacy group in the United States to push a four-day week, although the organization is still in its infancy.
The Democratic Socialists of America and the Justice Democrats, two left-wing groups that have pushed Democrats left, have not backed the idea yet. None of the 2020 Democratic presidential candidates have embraced the idea, despite similarly ambitious proposals for a federal jobs guarantee or a universal basic income.