While many pay lip service to the need for higher wages, the RMT general secretary was prepared to take the action required to secure them.
Cameron's party can’t and won’t take the action necessary because it can’t admit that for ordinary Britons there is no real recovery.
The former PM retains a strong connection with the working class Scots who could determine the referendum result.
The party pledges to fund the policy for the whole of the next parliament by introducing a bank bonus tax and restricting pension tax relief for those earning over £150,000.
Beyond the bluster and rhetoric, there is a surprising degree of consensus on the reforms needed.
We are developing a whole family approach to policy making that puts equality, relationships and mutual self-help at the centre of preventing social problems.
Miliband's northern fortresses are safe but Farage's party could prevent Labour winning southern and eastern marginals off the Tories in 2015.
The union is prepared to reduce the shortfall but will expect policy concessions in return.
"We are strongest when we understand our mutual dependence: that business and society - we need each other. That we rise and fall together."
The former PM, who has praised Miliband's party reforms, has had talks with Labour figures about giving money.