Four-day weeks are all the rage. But can they work?

Research in the UK showed most people prefer flexible hours over the rigidity of a four-day week. Pic: Larry Cummins
The business world badly wants a silver bullet to solve the existential crisis engulfing white-collar work as productivity falls.
A working assumption is that the silver bullet in question is the four-day week. It follows much fanfare about the success of trials around the world, and now a bill in the US that would amend the definition of the workweek in US federal law has been relaunched by Democrat Congressman Mark Takano.