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abour, under Jeremy Corbyn, has been making encouraging noises about the idea of a four-day working week for some months now. And this week things seemed to move on a bit further for the opposition party as it was reported that the shadow chancellor, John McDonnell, has spoken to the cross-bench peer Lord Skidelsky about the possibility of an inquiry into the topic. But what’s the argument for such a reform? How could it be implemented? And what would the impact be on the economy?