Four-day working week UK: Iñigo Errejón of Más País (Image: Getty)
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In December, think tank Autonomy published a report which showed a four-day working week would be affordable for most companies with more than 50 workers.
The report said the majority of 50,000 firms studied would be able to cope with the change through higher productivity or by raising prices.
The think tank said the government should investigate ways of rolling out a four-day week, starting with the public sector.
Will Stronge, director of research at Autonomy, said: “For the large majority of firms, reducing working hours is an entirely realistic goal for the near future.