Can U foresee a four day work week becoming the norm in the American workplace?

Question

even after we get over the energy crisis

Answer 1

Yes, that would be nice but I don't see a full scale switch in the near future.  After all, it has been just a minor few companies that have gone that way.  There are too many imponderables, such as the need to hire more employees for those companies required to be open to serve the public.