Labour MPs have stepped up pressure on Gordon Brown over rights for agency workers ahead of a meeting on Monday.
Backbenchers rallied enough support to get a second reading for a private member's bill to give temporary workers the same rights as permanent staff. Mr Brown has pledged an inquiry into the issue instead, but he is to meet union leaders to discuss a way forward.
More than one million people are employed via agencies, which means they do not get benefits such as sick pay. MPs voted by 147 to 11 - a margin of 136 - to back Labour MP Andrew Miller's bill, proposing to give agency workers the same rights as permanent staff. Among the 136 Labour MPs who voted for the bill's second reading was former work and pensions secretary Peter Hain.
Industry leaders oppose the bill saying it will lead to job losses and damage competitiveness.
But trade unions say Labour pledged to create a "level playing field" for agency workers in its 2005 manifesto.
We all know how long it takes the government to make a final decision and who knows if the changes will actually occur.
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