Would you like to work a 4 day week - but get paid the same? That's the pledge from Labour if they get into power.

Would you like to work a 4 day week - but get paid the same? That's the pledge from Labour if they get into power. Shadow Chancellor John McDonnell made the promise at their annual conference in Brighton this week. 32 hours within 10 years,  with "no loss of pay". Would it make you more productive, or is this just a chance for us to get away with doing less?