Amazon has told its office workers they may no longer work from home except in extenuating circumstances.It comes as Jonathan Reynolds, the UK's business secretary, said flexible working contributes to productivity, employee resilience, and staff retention. Money blog: Is now a good time to buy an iPhone?Workers need to be judged on outcomes and "not a culture of presenteeism", Mr Reynolds told The Times.What's Amazon doing? Amazon has described the policy change as returning to the way it worked before th ...