British Prime Minister Keir Starmer gave Rachel Reeves his full backing after the finance minister appeared visibly upset in parliament following a series of U-turns on welfare that blew a hole in her budget plans.
Ms Reeves had sat beside Mr Starmer during the weekly prime minister's questions and cameras caught her looking exhausted and upset.
Asked about Ms Reeves, a Treasury spokesperson said: "It's a personal matter, which - as you would expect - we are not going to get into."
The spokesperson said Ms Reeves will be working out of Downing Street this afternoon.
Mr Starmer's press secretary told reporters: "The chancellor is going nowhere, she has the prime minister's full backing."
The pressure on Ms Reeves comes after the government managed to pass its welfare reform bill only after it removed measures that would have led to savings in the long run.
Ms Reeves has been blamed by some Labour members of parliament for pushing for billions of pounds of savings that were described as cruel and targeting the most vulnerable.
Opposition politicians said the government's decision to sharply scale back the welfare reforms means it will have to raise taxes or cut government spending elsewhere to balance the public finances in the annual budget later this year.
Conservative party leader Kemi Badenoch singled out Ms Reeves during the weekly session, saying: "She's pointing at me, she looks absolutely miserable."
Ms Reeves animatedly gestured back.
Ms Badenoch said: "She is a human shield for his incompetence. In January, he said that she would be in post until the next election. Will she really?"
Mr Starmer then responded that Ms Badenoch would not be in her job by then, but declined to explicitly back Mr Reeves.
His press secretary later said the prime minister had expressed his confidence in Ms Reeves many times and did not need to repeat it every time a political opponent speculated on her position.