He forecast that the Prime Minister will be "prised" out of Downing Street long before the next general election due in 2022.
Mr Corbyn will use his address to the trade union conference in Brighton to hit out at companies that use temporary and short-term contracts.
Corbyn also accused the government of being out of touch with public sector workers, highlighting reported comments by the Chancellor Philip Hammond about his own large wealth.
He used his speech to call for the labour movement to maximise pressure on the Government.
"If you want a job that pays a decent wage, gives you the chance to get on in life, live independently and enjoy your work, then join a trade union".
"Is it not true that not only is our economy is at breaking point but for many people it is already broken as they face up to the poverty imposed by this government", he said.
"That is why the most important thing any worker can do is to join a trade union. And I want young people especially to hear this message", the Labour leader is expected to say.
"Politics is about power and democratic politics is about putting power in the hands of the many not just the few", he is expected to say. "That principle applies in the workplace too".
Jeremy Corbyn accuses 'unscrupulous bosses' of driving down wages
But Mr Corbyn said that with inflation running at 2.9%, even these pay rises amounted to a pay cut in real terms.
"Surely it is the role of the Government to respond to concern and anger".
"We need to ensure that we balance out protecting jobs in the public sector, being fair to public sector workers and being fair to taxpayers who pay for it, many of whom are public sector workers", she said.
The BBC understands ministers will lift the 1% public pay cap for the first time, for police and prison officers.
The Labour leader also said pay rises for police and prison officers announced this week did not go far enough and would have to be paid for by cuts in other budgets.
Though cynics will say this announcement was made to lessen the likelihood of crippling strikes across the pay sector, the country still needs to spend within its means and show a level of realism that, neverthelesss, will still frustrate Mr Corbyn and his left-wing cohorts.
Left-wing union leaders welcomed Mr Corbyn's rhetoric last night.
But, after a tour created to capitalise on Mr Corbyn's growing popularity with the general public since the general election, he told the BBC's World at One he would never appear on Strictly Come Dancing.
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ANOTHER STORM BREWING Hurricane Jose 2017 tracker - latest path, where is it, what category is it and how does it compare? Instead, the 16 jurors - the standard 12 plus four alternates - will be tasked with determining if Weier is mentally ill.