Scores of Labour MPs who are funded by trade unions voted against legislation aimed at easing the Tory anti-union laws last week.
The New Labour government went back on its promise, made in 2005 as part of the Warwick Agreement, to support the changes.
The TUC and all the major unions backed a series of amendments to the Employment Bill.
One would have banned employers from being able to hire agency workers to do the jobs of striking staff, and force them to inform employment agencies that there was a dispute to avoid an excuse of ignorance.
Another would have forced employers to provide contact details for workers to a union seeking an industrial action ballot.
This would have reduced the administrative burden on unions.
Just 44 Labour MPs could bring themselves to vote in line with policies the unions support.
Just 15 Labour MPs supported the unions having the right to expel without penalty British National Party members and other fascists.
This amendment was not even put to the vote because of the lack of support.
Union members should demand that all union support is withdrawn from those Labour MPs who voted against these measures.