The House of Lords will consider a series of amendments to the government's controversial Trade Union Bill when it goes before peers on Wednesday. Condemned by critics as "undemocratic", the bill would only allow workers to go on strike if more than 50% of them voted for industrial action. Employers would also have the authority to hire agency staff to cover the jobs of workers who go on strike. However the greatest outrage has arisen from proposals to change the way that union members pay their dues, which according to Labour, could lose the party up to £8 million a year. Joining Investment Perspectives host Juliette Foster for more analysis of that story is Matt Wrack, Head of the Fire Brigades Union, and Professor John Weeks, Share Radio's regular economics commentator.