Other measures expected in the package are help for people in mortgage arrears and loans for small businesses.
David Coats from The Work Foundation, an independent research consultancy, said the chancellor was right to increase government spending - but it must be focused.
He told BBC Radio 4's Today programme: "You need this stimulus to be timely, targeted - on those people who'll spend the money - and it's got to be temporary."
But Jill Kirby from right-wing think tank the Centre for Policy Studies warned against a "reckless expansion" of the public sector, which would not help to solve the economic troubles.
"There are parts of the public sector which can be shrunk. And we all know how much has gone into the cost of staffing large areas of the NHS which are not productive and not on the front-line of services," she said.
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