The TUC is an umbrella organization of 58 British unions, representing about 6.5 million workers.
The TUC voted to examine the feasibility of holding a general strike last year.
The proposal will be discussed at a meeting of the TUC's general council on 24 April.
The TUC, as the umbrella organisation for the trade union movement, is a broad church.
Frances O'Grady, set to become the TUC's first female general secretary, also addressed delegates.
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But what do delegates at the TUC conference think the Labour leadership needs to do?
Plaid is crowing about having its first ever address from a Welsh TUC leader.
Liz Llewelyn, a spokeswoman for NUS, said the move represented closer links between NUS and the TUC.
Brendan Barber, TUC general secretary, said the changes to the licensing regime would reduce protection for workers.
Trade unionists included Jamie Webster, the convener at the Govan shipyards and TUC general secretary John Monks.
The TUC said the amount of tax paid by migrants exceeded the cost of supplying public services.
Nigel Costley, from the TUC in the South West, said the figures showed more decreases in job security.
Britain's trade union body, the TUC, wants employers to be compelled to pay into their workers' pension funds.
That anger surfaced at the TUC conference in Blackpool two weeks ago and, on Monday, it erupted again.
It prompted the TUC to claim that average train fares had risen nearly three times faster than average incomes since 2008.
The TUC says it is concerned about the number of unpaid internships advertised on the Graduate Talent Pool website.
Matt Dykes, a policy officer from the TUC, says more needs to be done to stop graduates being exploited.
The campaign is backed by almost 50 groups, including the TUC and Oxfam, and celebrities like actor Bill Nighy.
Mr Monks, of the European TUC, said the limit could be varied at busy times like Christmas and harvests.
Mr Barber was the first TUC official to speak at an NUS conference.
The Wales TUC chartered a train and coaches so that people from all over Wales could march in London.
Plans to recruit 1, 800 volunteers to work at the Ryder Cup have been branded "unacceptable" by the Scottish TUC.
So that the TUC or the BMA or the Institution of Electrical Engineers or the churches have some say.
The launch was led by the Trades Union Congress (TUC) and the advisory group the Centre for Corporate Accountability.
Mr McCluskey was speaking ahead of the TUC Congress in Brighton this weekend.
And though the TUC voted for a campaign on pay, it rejected a firebrand amendment calling for a general strike.
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Farming unions the FUW and NFU Cymru, Careers Wales, the Unite union, Wales TUC and Coleg Menai also took part.
The prime minister will tell the TUC congress that public sector jobs would be at greater risk under the Conservatives.
Mr McCluskey also played down talk of a general strike before a debate on the issue by TUC members on Wednesday.
However the TUC's general secretary, Brendan Barber, said the test was designed purely to kick people off benefits, "whatever the cost".
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